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WO2019065999A1 - Stratifié, élément optique et dispositif optique - Google Patents

Stratifié, élément optique et dispositif optique Download PDF

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Publication number
WO2019065999A1
WO2019065999A1 PCT/JP2018/036343 JP2018036343W WO2019065999A1 WO 2019065999 A1 WO2019065999 A1 WO 2019065999A1 JP 2018036343 W JP2018036343 W JP 2018036343W WO 2019065999 A1 WO2019065999 A1 WO 2019065999A1
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WO
WIPO (PCT)
Prior art keywords
layer
void
gel
solvent
adhesive layer
Prior art date
Application number
PCT/JP2018/036343
Other languages
English (en)
Japanese (ja)
Inventor
大輔 服部
諒太 森島
岸　敦史
晶子 杉野
Original Assignee
日東電工株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2018180954A external-priority patent/JP7423181B2/ja
Application filed by 日東電工株式会社 filed Critical 日東電工株式会社
Priority to CN201880063213.5A priority Critical patent/CN111183031B/zh
Priority to KR1020237021920A priority patent/KR20230100756A/ko
Priority to KR1020207009806A priority patent/KR102550881B1/ko
Priority to EP18860750.1A priority patent/EP3686006A4/fr
Publication of WO2019065999A1 publication Critical patent/WO2019065999A1/fr
Priority to US16/832,563 priority patent/US11420413B2/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/04—Acids; Metal salts or ammonium salts thereof
    • C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10—Esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10—Esters
    • C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
    • C08F220/28—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
    • C09J133/04—Homopolymers or copolymers of esters
    • C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/26—Porous or cellular plastics
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/29—Laminated material
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/385—Acrylic polymers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction

Definitions

  • the present invention relates to a laminate, an optical member and an optical device.
  • an air layer having a low refractive index is used as a total reflection layer.
  • optical film members for example, a light guide plate and a reflection plate
  • a liquid crystal device are stacked via an air layer.
  • problems such as deflection of the members may occur, particularly when the members are large.
  • integration of each member is desired. For this reason, it is carried out to unify each member with an adhesive agent, without intervening an air layer (for example, patent document 1).
  • an air layer playing a role of total reflection disappears, optical characteristics such as light leakage may be deteriorated.
  • Patent Document 2 describes a structure in which a layer having a lower refractive index than the light guide plate is inserted between the light guide plate and the reflection plate.
  • a void layer having a void is used in order to set the refractive index to a low refractive index as close to air as possible.
  • the void layer is used, for example, by being laminated with another layer via an adhesive layer.
  • the pressure-sensitive adhesive or the adhesive constituting the adhesive layer penetrates into the voids of the void layer to fill the voids, and the porosity is reduced. It may decrease. The higher the porosity of the void layer, the easier the pressure-sensitive adhesive or adhesive penetrates.
  • the molecular motion of the pressure sensitive adhesive or the adhesive makes it easy for the pressure sensitive adhesive or the adhesive to penetrate into the void.
  • the pressure-sensitive adhesive or the adhesive In order to suppress or prevent the permeation of the pressure-sensitive adhesive or the adhesive into the void, it is preferable to use one having a high elastic modulus (hard) as the pressure-sensitive adhesive or the adhesive. However, if the elastic modulus of the pressure-sensitive adhesive or adhesive is high (hard), the adhesion or adhesion may be reduced. On the contrary, when the elastic modulus of the pressure-sensitive adhesive or adhesive is low (soft), high adhesion or adhesiveness is easily obtained, but the pressure-sensitive adhesive or adhesive may easily penetrate into the voids.
  • the present invention provides a laminate of an air gap layer and an adhesive layer, an optical member, and an optical device, in which the adhesion or adhesion is compatible with the infiltration of the adhesive or the adhesive into the air gap.
  • the first laminate of the present invention is Including a void layer and a tacky layer,
  • the pressure-sensitive adhesive layer is directly laminated on one side or both sides of the void layer,
  • the porosity of the void layer is 35% by volume or more,
  • the void remaining ratio of the void layer is 50% by volume or more before the heating and humidifying durability test.
  • the second laminate of the present invention is Including a void layer and a tacky layer,
  • the pressure-sensitive adhesive layer is directly laminated on one side or both sides of the void layer,
  • the porosity of the void layer is 35% by volume or more
  • the pressure-sensitive adhesive layer is formed of a pressure-sensitive adhesive containing a (meth) acrylic polymer and a crosslinking agent,
  • the gel fraction of the adhesive layer is 70% or more
  • the thickness of the adhesive layer is 2 to 50 ⁇ m
  • the adhesive and pressure-sensitive adhesive layer is characterized in that it satisfies the following formula (I).
  • X is the gel fraction (%) of the tacky-adhesive layer
  • Y is the thickness ( ⁇ m) of the pressure-sensitive adhesive layer.
  • the third laminate of the present invention is Including a void layer and a tacky layer,
  • the pressure-sensitive adhesive layer is directly laminated on one side or both sides of the void layer,
  • the porosity of the void layer is 35% by volume or more
  • the pressure-sensitive adhesive layer is formed of a pressure-sensitive adhesive containing a (meth) acrylic polymer and a crosslinking agent,
  • the (meth) acrylic polymer contains, as a monomer component, 3 to 10% by weight of a heterocycle-containing acrylic monomer, 0.5 to 5% by weight of (meth) acrylic acid, and 0.05 to 2% by weight of hydroxyalkyl (meth) acrylate And an alkyl (meth) acrylate of 83 to 96.45% by weight, which is characterized in that it is a (meth) acrylic polymer having a weight average molecular weight of 1.5 million to 2.8 million.
  • the first laminate of the present invention, the second laminate of the present invention, and the third laminate of the present invention
  • the optical member of the present invention is an optical member including the laminate of the present invention.
  • the optical device of the present invention is an optical device including the optical member of the present invention.
  • a laminate of an air gap layer and an adhesive layer, an optical member and an optical device, in which the adhesion or adhesion is compatible with the infiltration of the adhesive or the adhesive into the air gap. can do.
  • FIG. 1 is process sectional drawing which shows typically an example of the method of forming the laminated body of this invention which laminated
  • FIG. 2 is a figure which shows typically a part of process in the manufacturing method of laminated film (laminated film roll) which is roll shape, and an example of an apparatus used therewith.
  • FIG. 3 is a figure which shows typically a part of process in the manufacturing method of a lamination film roll, and another example of the apparatus used for it.
  • the void remaining ratio of the void layer after the heating / humidifying durability test is the void remaining ratio when only the void layer is subjected to the heating / humidifying durability test. It may be more than 50% and not more than 99%.
  • the first laminate of the present invention is, for example, The void layer and the tacky-adhesive layer are laminated via an intermediate layer,
  • the intermediate layer is a layer formed by the union of a part of the void layer and a part of the mucoadhesive layer,
  • the thickness of the intermediate layer is 200 nm or less,
  • the increase rate of the thickness of the intermediate layer may be 500% or less of the thickness of the intermediate layer before the heating / humidifying durability test after the heating / humidifying durability test.
  • the numerical value of [(100 ⁇ X) / 100] ⁇ Y represented by the numerical formula (I) is 10 or less. This means that the amount of the component that penetrates the void layer in the mucoadhesive layer is small. Thereby, it is possible to suppress or prevent a phenomenon in which the voids of the void layer are filled and the porosity is lowered.
  • the gel fraction (X) of the pressure-sensitive adhesive is 70% or more as described above, and may be, for example, 75% or more or 80% or more.
  • the upper limit of the gel fraction (X) is not particularly limited, and may be, for example, 100% or less, or 95% or less.
  • the gel fraction (X) of the pressure-sensitive adhesive may be, for example, 75 to 95% or 80 to 95%.
  • the thickness (Y) of the tacky-adhesive layer is 2 to 50 ⁇ m as described above, and may be, for example, 5 ⁇ m or more or 10 ⁇ m or more, for example, 40 ⁇ m or less or 30 ⁇ m or less.
  • the thickness (Y) of the tacky-adhesive layer may be, for example, 5 to 40 ⁇ m or 10 to 30 ⁇ m.
  • the measuring method of the gel fraction (X) of the said mucoadhesive layer is although it does not specifically limit, For example, it can measure by the measuring method as described in the below-mentioned Example.
  • the measuring method of the thickness (Y) of the said mucoadhesive layer is although it does not specifically limit, For example, it can measure by the measuring method as described in the below-mentioned Example.
  • An optical member and an optical device can be provided.
  • the second laminate of the present invention has, for example, a weight average molecular weight of 50,000 to 500,000 of the sol component of the adhesive layer in the molecular weight measurement of the adhesive layer by gel permeation chromatography. It may be Also, for example, in the molecular weight measurement of the tacky-adhesive layer by gel permeation chromatography, the content of the low molecular weight component having a molecular weight of 10,000 or less in the sol of the tacky-adhesive layer is 20% by weight (mass% Or less).
  • the weight average molecular weight of the sol may be, for example, 70,000 or more, for example, 450,000 or less or 400,000 or less, for example, 7 to 450,000 or 7 to 400,000.
  • the content (ratio) of the component having a molecular weight of 10,000 or less in the sol may be, for example, 20 wt% or less as described above with respect to the total amount (100 wt%) of the sol, for example , 15 wt% or less or 10 wt% or less.
  • the lower limit of the content (ratio) of the component having a molecular weight of 10,000 or less in the sol is not particularly limited, but may be, for example, a numerical value of 0% by weight or more or 0% by weight, for example, 3% by weight or more May be.
  • the content (proportion) of the component having a molecular weight of 10,000 or less in the sol may be, for example, 3 to 15% by weight or 3 to 10% by weight.
  • the specific measuring method by a gel permeation chromatography method is not specifically limited, For example, the measuring method as described in the Example mentioned later may be used.
  • the void remaining ratio of the void layer is, for example, the heating / humidifying durability test after the heating / humidifying durability test in which the temperature is maintained at 85 ° C. and relative humidity 85% for 500 h. It may be 50% by volume or more.
  • the void remaining ratio of the void layer after the heating / humidifying durability test is such that only the void layer is subjected to the heating / humidifying durability test. It may be more than 50% and not more than 99% of the void retention rate of
  • the second or third laminate of the present invention is, for example, The void layer and the tacky-adhesive layer are laminated via an intermediate layer,
  • the intermediate layer is a layer formed by the union of a part of the void layer and a part of the mucoadhesive layer,
  • the thickness of the intermediate layer may be 200 nm or less.
  • the rate of increase in thickness of the intermediate layer is, for example, the heating / humidifying durability after the heating / humidifying durability test of holding at a temperature of 85 ° C. and a relative humidity of 85% for 500 hours. It may be 500% or less of the thickness of the intermediate layer before the test.
  • the refractive index of the air gap layer may be 1.25 or less.
  • the adhesive layer may be formed of an optical acrylic pressure-sensitive adhesive having a total light transmittance of 85% or more and a haze of 3% or less.
  • the measurement of the total light transmittance and the haze of the tackiness adhesive layer can be performed, for example, by the same measurement method as that of a laminate or a void layer described later.
  • the storage elastic modulus at 23 ° C. of the pressure-sensitive adhesive layer may be 1.0 ⁇ 10 5 or more.
  • the measuring method of the storage elastic modulus at 23 degreeC is not specifically limited, For example, it can measure by the measuring method as described in the below-mentioned Example.
  • the mucoadhesive layer is formed of a pressure-sensitive adhesive containing a (meth) acrylic polymer and a crosslinking agent.
  • the (meth) acrylic polymer may be crosslinked by the crosslinking agent to form a crosslinked structure.
  • the reason (mechanism) in which the cohesion or adhesion and the insolubility of the adhesive or the adhesive into the voids can be compatible is considered as follows, for example.
  • a pressure-sensitive adhesive layer using a specific pressure-sensitive adhesive it is possible to achieve both the adhesion or adhesion and the difficulty of the penetration of the pressure-sensitive adhesive or the adhesive into the voids.
  • a mucoadhesive layer using a specific adhesive as described above by combining a part of the void layer with a part of the mucoadhesive layer, an intermediate layer is formed. A layer is formed.
  • the intermediate layer does not excessively spread even under the conditions such as the heating / humidifying durability test.
  • middle layer becomes a stopper and it can suppress the reduction
  • the intermediate layer formed of the adhesive and the high void layer tends to be a strong and dense stopper, and the high void layer of the adhesive is easily formed. Permeation is suppressed.
  • these mechanisms are merely illustrative and do not limit the present invention.
  • the laminate of the present invention includes the void layer and the mucoadhesive layer, and the mucoadhesive layer is directly laminated on one side or both sides of the void layer.
  • the pressure-sensitive adhesive layer in the case where the pressure-sensitive adhesive layer is “directly laminated” on the void layer, the pressure-sensitive adhesive layer may be in direct contact with the void layer, and the pressure-sensitive adhesive layer is the intermediate layer May be laminated to the void layer via
  • the void remaining ratio of the void layer is, for example, 50 with respect to the void before the heating and humidifying durability test.
  • the upper limit may be, but is not particularly limited to, ideally 100% by volume, 99% by volume or less, 98% by volume or less, or 95% by volume, 55% by volume or more, or 60% by volume or more. It may be volume% or less.
  • the increase rate of the thickness of the intermediate layer is, as described above, for example, after the heating / humidifying durability test held at a temperature of 85 ° C. and a relative humidity of 85% for 500 h.
  • the thickness of the intermediate layer before the heating / humidifying durability test is 100% of the thickness of the intermediate layer before the humidifying durability test, it may be 500% or less.
  • the increasing rate of the thickness of the intermediate layer after the heating / humidifying durability test is 100% of the thickness of the intermediate layer before the heating / humidifying durability test with respect to the thickness of the intermediate layer before the heating / humidifying durability test. Sometimes, for example, it may be 400% or less, 350% or less, or 300% or less, for example, 100% or more, 110% or more, 120% or more, 130% or more, or 140% or more.
  • the void remaining ratio of the void layer after the heating / humidifying durability test is, for example, the void remaining when only the void layer is subjected to the heating / humidifying durability test as described above. May be more than 50% to 99% or less, may be 53% or more, 55% or more, or 60% or more, and may be 98% or less, 97% or less, or 96% or less .
  • the light transmittance of the laminate of the mucoadhesive layer and the void layer, or the laminate of the mucoadhesive layer, the intermediate layer, and the void layer is 80% or more. It may be.
  • the haze of the laminate may be 3% or less.
  • the light transmittance may be, for example, 82% or more, 84% or more, 86% or more, or 88% or more, and the upper limit is not particularly limited, and is ideally 100%, for example, 95 % Or less, 92% or less, 91% or less, or 90% or less.
  • the measurement of the haze of the laminate can be performed, for example, by the same method as the measurement of the haze of the void layer described later.
  • the light transmittance is a transmittance of light having a wavelength of 550 nm, and can be measured, for example, by the following measurement method.
  • the laminate is used as a sample to be measured, using a spectrophotometer U-4100 (trade name of Hitachi, Ltd.). Then, the total light transmittance (light transmittance) of the sample when the total light transmittance of air is 100% is measured.
  • the value of the total light transmittance (light transmittance) is a value measured at a wavelength of 550 nm.
  • the adhesion or adhesion of the adhesive layer is, for example, 0.7 N / 25 mm or more, 0.8 N / 25 mm or more, 1.0 N / 25 mm or more, or 1.5 N / It may be 25 mm or more, 50 N / 25 mm or less, 30 N / 25 mm or less, 10 N / 25 mm or less, 5 N / 25 mm or less, or 3 N / 25 mm or less. From the viewpoint of the risk of peeling during handling when the laminate is bonded to other layers, it is preferable that the adhesive force or the adhesive force of the pressure-sensitive adhesive layer is not too low.
  • the adhesive force or the adhesive force of the said mucoadhesive layer is not too high from a viewpoint of rework at the time of reattachment.
  • the adhesion or adhesion of the tacky-adhesive layer can be measured, for example, as follows.
  • the laminated film of the present invention (the resin film substrate on which the laminate of the present invention is formed) is sampled in a 50 mm ⁇ 140 mm strip, and the sample is fixed to a stainless steel plate with a double-sided tape.
  • An acrylic adhesive layer (20 ⁇ m thick) is bonded to a PET film (T100: manufactured by Mitsubishi Plastics Film Co., Ltd.), and a piece of pressure-sensitive adhesive tape cut into 25 mm ⁇ 100 mm is attached to the opposite side of the laminated film of the present invention. And laminating with the PET film.
  • the sample is chucked in an autograph tensile tester (manufactured by Shimadzu Corporation: AG-Xplus) so that the distance between chucks is 100 mm, and then the tensile test is performed at a tensile speed of 0.3 m / min. .
  • the average test force subjected to the 50 mm peel test is taken as the adhesive peel strength, that is, the adhesive strength.
  • the adhesive strength can be measured by the same measurement method. In the present invention, there is no clear distinction between "adhesive force” and "adhesive force”.
  • the laminate of the present invention may be formed, for example, on a substrate such as a film.
  • the film may be, for example, a resin film.
  • a film one with a relatively small thickness
  • a sheet one with a relatively large thickness
  • film and sheet There is no particular distinction.
  • the substrate is not particularly limited, and for example, a substrate made of a thermoplastic resin, a substrate made of glass, an inorganic substrate typified by silicon, a plastic molded with a thermosetting resin or the like, an element such as a semiconductor, Although a carbon fiber material represented by carbon nanotubes can be preferably used, it is not limited thereto.
  • the form of the substrate is, for example, a film, a plate or the like.
  • the thermoplastic resin is, for example, polyethylene terephthalate (PET), acrylic, cellulose acetate propionate (CAP), cycloolefin polymer (COP), triacetyl cellulose (TAC), polyethylene naphthalate (PEN), polyethylene (PE) And polypropylene (PP).
  • optical member of this invention is not specifically limited,
  • the optical film containing the laminated body of the said this invention may be sufficient.
  • the optical apparatus (optical device) of the present invention is not particularly limited, and may be, for example, an image display apparatus or a lighting apparatus.
  • the image display device include a liquid crystal display, an organic EL (Electro Luminescence) display, a micro LED (Light Emitting Diode) display, and the like.
  • organic EL illumination etc. are mention
  • void layer of the present invention the void layer in the laminate of the present invention (hereinafter sometimes referred to as "void layer of the present invention”) will be described by way of examples.
  • the void layer of the present invention is not limited to this.
  • the void layer of the present invention may have, for example, a porosity of 35% by volume or more and a peak pore diameter of 50 nm or less.
  • a porosity of 35% by volume or more and a peak pore diameter of 50 nm or less.
  • the porosity may be, for example, 35 vol% or more, 38 vol% or more, or 40 vol% or more, and may be 90 vol% or less, 80 vol% or less, or 75 vol% or less.
  • the void layer of the present invention may be, for example, a high void layer having a porosity of 60% by volume or more.
  • the porosity can be measured, for example, by the following measurement method.
  • the layer whose porosity is to be measured is a single layer and contains only voids
  • the ratio (volume ratio) of the constituent materials of the layer to air can be calculated in a conventional manner (for example, measuring the weight and volume to calculate the density) Since it is possible to calculate by this, the porosity (volume%) can be calculated by this.
  • the porosity can be calculated from the value of the refractive index as a layer.
  • the porosity is calculated from Lorentz-Lorenz's formula (Lorentz-Lorentz equation) from the value of the refractive index measured by an ellipsometer.
  • the void layer of the present invention can be produced, for example, by the chemical bonding of a crushed gel (fine pore particles) as described later.
  • the voids of the void layer can be divided into the following three types (1) to (3) for the sake of convenience.
  • (2) Voids possessed by the gel ground product unit (3) A void between the ground products resulting from the deposition of the gel ground product
  • each particle group generated by pulverizing the gel, regardless of the size, size, etc. of the crushed gel (fine pore particles) It is an air gap formed at the time of grinding separately from the above (1) which can be formed in each block.
  • the voids in the above (3) are voids which occur in grinding (for example, medialess grinding etc.) because the size, size and the like of the gel ground product (microporous particles) become irregular.
  • the void layer of the present invention has, for example, the voids of the above (1) to (3), thereby having an appropriate porosity and peak pore diameter.
  • the peak pore diameter may be, for example, 5 nm or more, 10 nm or more, or 20 nm or more, and may be 50 nm or less, 40 nm or less, or 30 nm or less.
  • the lower limit of the peak pore diameter of the void layer is not particularly limited, but if the peak pore diameter is too small, the porosity becomes difficult to increase, so the peak pore diameter is preferably not too small.
  • the peak pore size can be measured, for example, by the following method.
  • the peak pore diameter is calculated from the result of calculation of BJH plot, BET plot, and isothermal adsorption line by nitrogen adsorption using a pore distribution / specific surface area measurement device (trade name of BELLSORP MINI / microtrack bell company).
  • the thickness of the void layer of the present invention is not particularly limited, but may be, for example, 100 nm or more, 200 nm or more, or 300 nm or more, and may be 10000 nm or less, 5000 nm or less, or 2000 nm or less.
  • the void layer of the present invention for example, as described later, the three-dimensional structure of the porous gel is destroyed by using a crushed product of the porous gel, and a new three-dimensional structure different from the porous gel is Is formed.
  • the void layer of the present invention is a layer in which a new pore structure (new void structure) which can not be obtained by the layer formed from the porous gel is formed, and thus the void ratio is high.
  • a void layer of scale can be formed.
  • the pulverized materials are chemically bonded, for example, while adjusting the number of siloxane bond functional groups of the silicon compound gel.
  • the void layer of the present invention is, for example, functionally porous because the void layer of the present invention is chemically bonded (for example, crosslinked) in a bonding step.
  • the void layer can be applied to various objects easily and simply.
  • the void layer of the present invention contains, for example, a pulverized product of a porous gel, as described later, and the pulverized products are chemically bonded to each other.
  • the form of the chemical bond (chemical bond) of the pulverized materials is not particularly limited, and specific examples of the chemical bond include, for example, cross-linking and the like.
  • the method of chemically bonding the said ground materials is as having demonstrated in detail in the manufacturing method of the space
  • the crosslinking is, for example, a siloxane bond.
  • the siloxane bond can be exemplified by, for example, a bond of T2, a bond of T3, and a bond of T4 shown below.
  • the silicone porous body of the present invention may have any one type of bond, may have any two types of bond, or all three types of bonds. It is also good.
  • the siloxane bonds the larger the ratio of T2 and T3 is, the more flexible it is and the inherent characteristics of the gel can be expected, but the film strength becomes weaker.
  • the contained silicon atoms are siloxane bonded.
  • the ratio of unbonded silicon atoms that is, residual silanols
  • the ratio of unbonded silicon atoms is, for example, less than 50%, 30% or less, and 15% or less of the total silicon atoms contained in the silicone porous body.
  • the void layer of the present invention has, for example, a pore structure.
  • the void size of the hole refers to the diameter of the major axis among the diameter of the major axis and the diameter of the minor axis of the void (hole).
  • the pore size is, for example, 5 nm to 50 nm.
  • the lower limit of the void size is, for example, 5 nm or more, 10 nm or more, or 20 nm or more, and the upper limit thereof is, for example, 50 nm or less, 40 nm or less, or 30 nm or less.
  • the range is, for example, 5 nm to 50 nm, 10 nm 40 nm. Since the preferred void size depends on the application that uses the void structure, it is necessary to adjust the void size to a desired void size, for example, depending on the purpose.
  • the void size can be evaluated, for example, by the following method.
  • the form of the void layer can be observed and analyzed using an SEM (scanning electron microscope).
  • SEM scanning electron microscope
  • the void layer is subjected to FIB processing (accelerating voltage: 30 kV) under cooling, and the obtained cross-sectional sample is FIB-SEM (manufactured by FEI: trade name Helios NanoLab 600, accelerating voltage: 1 kV)
  • FIB-SEM manufactured by FEI: trade name Helios NanoLab 600, accelerating voltage: 1 kV
  • a cross-sectional electron image can be obtained at an observation magnification of 100,000.
  • the void size can be quantified by the BET test method. Specifically, after introducing 0.1 g of a sample (the void layer of the present invention) into a capillary of a pore distribution / specific surface area measurement apparatus (trade name of BELLSORP MINI / Microtrack Bell), 24 hours at room temperature Vacuum drying is performed to degas the gas in the void structure. Then, nitrogen gas is adsorbed to the sample to draw a BET plot, a BJH plot, and an adsorption isotherm to determine a pore distribution. By this, the void size can be evaluated.
  • the film density showing the porosity is not particularly limited, and the lower limit thereof is, for example, 1 g / cm 3 or more, 5 g / cm 3 or more, 10 g / cm 3 or more, 15 g / cm 3 or more
  • the upper limit thereof is, for example, 50 g / cm 3 or less, 40 g / cm 3 or less, 30 g / cm 3 or less, 2.1 g / cm 3 or less, and the range is, for example, 5 to 50 g / cm 3 , 10 It is ⁇ 40 g / cm 3 , 15 ⁇ 30 g / cm 3 and 1 ⁇ 2.1 g / cm 3 .
  • the film density can be measured, for example, by the following method.
  • the void layer of the present invention may have, for example, a pore structure (porous structure) as described above, and may be, for example, a continuous foam structure in which the pore structure is continuous.
  • the open-cell foam structure means, for example, that the pore structure is continuous in three dimensions in the void layer, and it can be said that the internal voids of the pore structure are continuous.
  • the porous body has a continuous foam structure, this can increase the porosity occupied in the bulk, but can not form a continuous foam structure when using single foam particles such as hollow silica.
  • the void layer of the present invention since the sol particles (the pulverized product of the porous gel forming the sol) have a three-dimensional tree-like structure, the coated film (the pulverized product of the porous gel is used It is possible to easily form a continuous foam structure by sedimentation and deposition of the dendritic particles in the coating film of the sol contained. Further, the void layer of the present invention more preferably forms a monolithic structure in which the continuous foam structure has a plurality of pore distributions.
  • the monolith structure refers to, for example, a structure in which nano-sized fine voids are present and a hierarchical structure in which the nano-voids are present as a continuous foam structure.
  • the monolith structure for example, while providing film strength with fine voids, high porosity can be provided with coarse open-cell foam voids, and both film strength and high porosity can be achieved.
  • the monolith structure can be formed by controlling the particle size distribution of the crushed material to a desired size.
  • the haze exhibiting transparency is not particularly limited, and the lower limit thereof is, for example, 0.1% or more, 0.2% or more, 0.3% or more, and the upper limit thereof is, for example, 10% or less, 5% or less, 3% or less, and the range is, for example, 0.1 to 10%, 0.2 to 5%, or 0.3 to 3%.
  • the haze can be measured, for example, by the following method.
  • Haze rating [diffuse transmittance (%) / total light transmittance (%)] x 100 (%)
  • the refractive index generally refers to the ratio of the transmission speed of the wavefront of light in vacuum to the propagation speed in the medium as the refractive index of the medium.
  • the refractive index of the void layer of the present invention is not particularly limited, and the upper limit thereof is, for example, 1.3 or less, less than 1.3, 1.25 or less, 1.2 or less, or 1.15 or less. Is, for example, 1.05 or more, 1.06 or more, 1.07 or more, and the range thereof is, for example, 1.05 or more, 1.3 or less, 1.05 or more and less than 1.3, 1.05 or more, 1 .25 or less, 1.06 or more and less than 1.2, and 1.07 or more and 1.15 or less.
  • the refractive index refers to the refractive index measured at a wavelength of 550 nm unless otherwise specified.
  • the measuring method of a refractive index is not specifically limited, For example, it can measure by the following method.
  • a void layer (the void layer of the present invention) is formed on an acrylic film, it is cut into a size of 50 mm ⁇ 50 mm, and this is adhered to the surface of a glass plate (thickness: 3 mm) with an adhesive layer.
  • the back surface center part (diameter about 20 mm) of the said glass plate is filled with black ink, and the sample which does not reflect in the back surface of the said glass plate is prepared.
  • the sample is set in an ellipsometer (VASE, manufactured by JA Woollam Japan Co., Ltd.), the refractive index is measured under the conditions of a wavelength of 500 nm and an incident angle of 50 to 80 degrees, and the average value is taken as the refractive index.
  • VASE manufactured by JA Woollam Japan Co., Ltd.
  • the thickness of the void layer of the present invention is not particularly limited, and the lower limit thereof is, for example, 0.05 ⁇ m or more and 0.1 ⁇ m or more, and the upper limit thereof is, for example, 1000 ⁇ m or less and 100 ⁇ m or less. For example, it is 0.05 to 1000 ⁇ m, 0.1 to 100 ⁇ m.
  • the form of the void layer of the present invention is not particularly limited, and may be, for example, a film shape or a block shape.
  • the pressure-sensitive adhesive layer can be formed, for example, using at least one of an adhesive and an adhesive.
  • adhesive and “adhesive” are not necessarily clearly distinguishable, as described later.
  • the pressure-sensitive adhesive is not particularly limited, and examples thereof include the pressure-sensitive adhesives exemplified below.
  • the pressure-sensitive adhesive used to form the pressure-sensitive adhesive layer in the laminate of the present invention has, for example, 3 to 10% by weight of a heterocycle-containing acrylic monomer as a monomer component, a polymerizable functional group, and (meth) acrylic acid Based on a (meth) acrylic polymer comprising 0.5 to 5% by weight, and 0.05 to 2% by weight of hydroxyalkyl (meth) acrylate and 83 to 96.45% by weight of alkyl (meth) acrylate Used as a polymer.
  • heterocycle-containing acrylic monomer for example, one having a polymerizable functional group and having a heterocycle can be used without particular limitation.
  • the polymerizable functional group include (meth) acryloyl group and vinyl ether group. Among these, a (meth) acryloyl group is preferred.
  • the heterocyclic ring include morpholine ring, piperidine ring, pyrrolidine ring, piperazine ring and the like.
  • heterocycle-containing acrylic monomer include N-acryloyl morpholine, N-acryloyl piperidine, N-methacryloyl piperidine, N-acryloyl pyrrolidine and the like. Among these, N-acryloyl morpholine is preferable.
  • the heterocycle-containing acrylic monomer can improve the durability of either heat resistance or moisture resistance when the pressure-sensitive adhesive layer is thinned.
  • a heterocyclic containing acrylic monomer is preferable at the point which can improve the adhesive force to the optical film of an adhesive layer.
  • it is preferable from the viewpoint of improving the adhesion to a cyclic polyolefin such as a norbornene resin, and is preferable when using a cyclic polyolefin as an optical film.
  • the heterocycle-containing acrylic monomer is used, for example, in a proportion of 3 to 10% by weight based on the total amount of the monomer components forming the (meth) acrylic polymer.
  • the proportion of heterocycle-containing acrylic monomers may be, for example, 4 to 9.5% by weight or 6 to 9% by weight.
  • the proportion of the heterocycle-containing acrylic monomer is preferably not less than the above range from the viewpoint of heat resistance and moisture resistance when the pressure-sensitive adhesive layer is thinned.
  • the proportion of the heterocycle-containing acrylic monomer is preferably not more than the above range from the viewpoint of moisture resistance in the case of thinning.
  • the ratio of the heterocycle-containing acrylic monomer is preferably not more than the above range. Moreover, it is preferable that the ratio of a heterocyclic containing acrylic monomer is not more than the said range from a viewpoint of adhesive force.
  • acrylic acid is particularly preferred.
  • (Meth) acrylic acid is used, for example, in a ratio of 0.5 to 5% by weight with respect to the total amount of monomer components forming the (meth) acrylic polymer.
  • the proportion of (meth) acrylic acid may, for example, be 1 to 4.5% by weight or 1.5 to 4% by weight.
  • the proportion of (meth) acrylic acid is preferably not less than the above range from the viewpoint of heat resistance in the case of thinning the pressure-sensitive adhesive layer (viscoadhesive layer).
  • the ratio of (meth) acrylic acid is not more than the said range from a heat resistant and the moisture resistant viewpoint at the time of thinning.
  • the ratio of (meth) acrylic acid is not more than the said range from a viewpoint of adhesive force.
  • hydroxyalkyl (meth) acrylate for example, one having a polymerizable functional group and having a hydroxyl group can be used without particular limitation.
  • hydroxyalkyl (meth) acrylates include 2-hydroxyethyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 6-hydroxy Preferred are hydroxyalkyl (meth) acrylates such as hexyl (meth) acrylate, 8-hydroxyoctyl (meth) acrylate, 10-hydroxydecyl (meth) acrylate, 12-hydroxylauryl (meth) acrylate and the like.
  • the hydroxyalkyl (meth) acrylate is used, for example, in a proportion of 0.05 to 2% by weight with respect to the total amount of monomer components forming the (meth) acrylic polymer.
  • the proportion of hydroxyalkyl (meth) acrylate may be, for example, 0.075 to 1.5% by weight or 0.1 to 1% by weight.
  • the proportion of the hydroxyalkyl (meth) acrylate is preferably not less than the above range from the viewpoint of heat resistance in the case of thinning the pressure-sensitive adhesive layer (adhesive layer). Further, the proportion of hydroxyalkyl (meth) acrylate is preferably not more than the above range from the viewpoint of heat resistance and moisture resistance when thinned. Moreover, it is preferable that the ratio of the hydroxyalkyl (meth) acrylate is not more than the said range from a viewpoint of adhesive force.
  • the average carbon number of the alkyl group of the alkyl (meth) acrylate may be about 1 to 12.
  • (meth) acrylate is an acrylate and / or a methacrylate, and (meth) of this invention is the same meaning.
  • alkyl (meth) acrylate examples include methyl (meth) acrylate, ethyl (meth) acrylate, n-butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, isooctyl (meth) acrylate and isononyl (meth) acrylate And lauryl (meth) acrylate and the like, and these can be used alone or in combination.
  • alkyl (meth) acrylates having 1 to 9 carbon atoms in the alkyl group are preferable.
  • the alkyl (meth) acrylate is used, for example, at a ratio of 83 to 96.45% by weight based on the total amount of monomer components forming the (meth) acrylic polymer.
  • the alkyl (meth) acrylate is usually the balance other than the above-mentioned heterocycle-containing acrylic monomer, (meth) acrylic acid and hydroxyalkyl (meth) acrylate.
  • a monomer component which forms the above (meth) acrylic polymer for example, in addition to the above-mentioned monomer, an optional monomer other than the above is used in a range of 10% or less be able to.
  • the optional monomer examples include acid anhydride group-containing monomers such as maleic anhydride and itaconic anhydride; caprolactone adduct of acrylic acid; styrene sulfonic acid and allyl sulfonic acid, 2- (meth) acrylamido-2-methylpropane Sulfonic acid group-containing monomers such as sulfonic acid, (meth) acrylamidopropane sulfonic acid, sulfopropyl (meth) acrylate and (meth) acryloyloxynaphthalene sulfonic acid; phosphoric acid group-containing monomers such as 2-hydroxyethyl acryloyl phosphate .
  • Nitrogen-containing vinyl monomers are mentioned.
  • maleimide N-cyclohexyl maleimide, N-phenyl maleimide;
  • (Meth) acrylic acid such as acrylate Alkylaminoalkyl monomers; (meth) acrylate alkoxyalkyl monomers such as methoxyethyl (meth) acrylate and ethoxyethyl (meth) acrylate; N- (meth) acryloyloxymethylene succinimide and N- (meth) acryloyl- Succinimide monomers such as 6-oxyhexamethylene succinimide and N- (meth) acryloyl-8-oxyoctamethylene succinimide etc. may be mentioned.
  • silane type monomer containing a silicon atom can be mentioned.
  • silane monomers include 3-acryloxypropyltriethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, 4-vinylbutyltrimethoxysilane, 4-vinylbutyltriethoxysilane, 8-vinyloctyltrimethoxysilane And 8-vinyloctyltriethoxysilane, 10-methacryloyloxydecyltrimethoxysilane, 10-acryloyloxydecyltrimethoxysilane, 10-methacryloyloxydecyltriethoxysilane, 10-acryloyloxydecyltriethoxysilane and the like.
  • the (meth) acrylic polymer used in the present invention may have, for example, a weight average molecular weight of 1.5 to 0.2 million.
  • the weight average molecular weight may be, for example, 1.7 million to 2.7 million or 2 million to 2.5 million.
  • the weight average molecular weight is preferably not smaller than the above range from the viewpoint of heat resistance and moisture resistance when the pressure-sensitive adhesive layer is thinned. Further, the weight average molecular weight is preferably not larger than the above range from the viewpoint of the durability in the case of thinning, the bonding property, and the adhesive strength.
  • the weight average molecular weight is, for example, a value measured by GPC (gel permeation chromatography) and calculated by polystyrene conversion.
  • the manufacturing method of such (meth) acrylic-type polymer is not specifically limited, For example, well-known manufacturing methods, such as solution polymerization, block polymerization, emulsion polymerization, various radical polymerization, can be selected suitably.
  • the (meth) acrylic polymer to be obtained may be any of a random copolymer, a block copolymer, a graft copolymer and the like.
  • solution polymerization for example, ethyl acetate, toluene or the like is used as a polymerization solvent.
  • the reaction is carried out under a stream of an inert gas such as nitrogen, with the addition of a polymerization initiator, for example, at about 50 to 70 ° C., for about 5 to 30 hours.
  • the polymerization initiator, chain transfer agent, emulsifier and the like used for radical polymerization are not particularly limited and can be appropriately selected and used.
  • the weight average molecular weight of the (meth) acrylic polymer can be controlled by the amount of the polymerization initiator and the chain transfer agent used, and the reaction conditions, and the amount used can be appropriately adjusted according to the type of these.
  • polymerization initiator for example, 2,2′-azobisisobutyronitrile, 2,2′-azobis (2-amidinopropane) dihydrochloride, 2,2′-azobis [2- (5-methyl-2) -Imidazolin-2-yl) propane] dihydrochloride, 2,2′-azobis (2-methylpropionamidine) disulfate, 2,2′-azobis (N, N′-dimethylene isobutylamidine), 2,2 Azo initiators such as' -azobis [N- (2-carboxyethyl) -2-methylpropionamidine] hydrate (manufactured by Wako Pure Chemical Industries, Ltd., VA-057), persulfates such as potassium persulfate and ammonium persulfate , Di (2-ethylhexyl) peroxydicarbonate, di (4-t-butylcyclohexyl) peroxydicarbonate, di-sec-butyl Peroxy
  • the said polymerization initiator may be used independently and may be used in mixture of 2 or more types.
  • the total content of the polymerization initiator may be, for example, about 0.005 to 1 part by weight or about 0.02 to 0.5 parts by weight with respect to 100 parts by weight of the monomer.
  • the usage-amount of a polymerization initiator is a monomer
  • about 0.06 to 0.2 parts by weight or about 0.08 to 0.175 parts by weight may be used with respect to 100 parts by weight of the total amount of the components.
  • chain transfer agents examples include lauryl mercaptan, glycidyl mercaptan, mercaptoacetic acid, 2-mercaptoethanol, thioglycolic acid, 2-ethylhexyl thioglycolate, 2,3-dimercapto-1-propanol and the like.
  • the chain transfer agent may be used alone or in combination of two or more.
  • the total content of the chain transfer agent is, for example, about 0.1 parts by weight or less with respect to 100 parts by weight of the total amount of the monomer components.
  • anionic emulsifiers such as sodium lauryl sulfate, ammonium lauryl sulfate, sodium dodecyl benzene sulfonate, ammonium polyoxyethylene alkyl ether sulfate, sodium polyoxyethylene alkyl phenyl ether sulfate, etc., polyoxy Examples thereof include nonionic emulsifiers such as ethylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene fatty acid ester, polyoxyethylene-polyoxypropylene block polymer and the like. These emulsifiers may be used alone or in combination of two or more.
  • a reactive emulsifier as an emulsifier into which a radically polymerizable functional group such as propenyl group or allyl ether group is introduced, specifically, for example, Aqualon HS-10, HS-20, KH-10, BC-05 BC-10, BC-20 (all manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.), Adekaria Soap SE10N (manufactured by Asahi Denka Co., Ltd.), and the like.
  • Reactive emulsifiers are preferred because they are incorporated into the polymer chain after polymerization, which improves the water resistance.
  • the amount of the emulsifier used is preferably 0.3 to 5 parts by weight, more preferably 0.5 to 1 parts by weight from the viewpoint of polymerization stability and mechanical stability, based on 100 parts by weight of the total of the monomer components.
  • the pressure-sensitive adhesive is preferably a pressure-sensitive adhesive composition containing a crosslinking agent.
  • polyfunctional compounds which can be added to the adhesive include organic crosslinking agents and polyfunctional metal chelates.
  • organic type crosslinking agent an epoxy type crosslinking agent, an isocyanate type crosslinking agent, an imine type crosslinking agent etc. are mention
  • organic type crosslinking agent an isocyanate type crosslinking agent is preferable.
  • a polyfunctional metal chelate is one in which a polyvalent metal is covalently bonded or coordinated with an organic compound.
  • Examples of polyvalent metal atoms include Al, Cr, Zr, Co, Cu, Fe, Ni, V, Zn, In, Ca, Mg, Mn, Y, Ce, Sr, Ba, Mo, La, Sn, Ti, etc. can give.
  • Examples of the atom in the organic compound to be covalently bonded or coordinated include an oxygen atom and the like, and examples of the organic compound include an alkyl ester, an alcohol compound, a carboxylic acid compound, an ether compound, a ketone compound and the like.
  • aromatic isocyanates such as tolylene diisocyanate and xylene diisocyanate
  • alicyclic isocyanates such as isophorone diisocyanate
  • aliphatic isocyanates such as hexamethylene diisocyanate, etc.
  • lower aliphatic polyisocyanates such as butylene diisocyanate and hexamethylene diisocyanate
  • cycloaliphatic diisocyanates such as cyclopentylene diisocyanate, cyclohexylene diisocyanate, isophorone diisocyanate, 2,4-tolylene diisocyanate
  • Aromatic diisocyanates such as 4,4'-diphenylmethane diisocyanate, xylylene diisocyanate, polymethylene polyphenyl isocyanate, trimethylolpropane / tolylene diisocyanate trimer adduct (manufactured by Nippon Polyurethane Industry Co., Ltd., trade name Coronate L), tri Methylolpropane / hexamethylene diisocyanate trimer adduct (manufactured by Nippon Polyurethane Industry Co., Ltd., trade name: Coronate HL
  • the isocyanate type crosslinking agent may be used independently and may be used in mixture of 2 or more types, content as a whole is said with respect to 100 mass parts of said (meth) acrylic polymers.
  • the isocyanate crosslinking agent may be contained, for example, in the range of 0.02 to 2 parts by mass, 0.04 to 1.5 parts by mass, or 0.05 to 1 parts by mass.
  • the content of the isocyanate-based crosslinking agent is preferably 0.02 parts by mass or more from the viewpoint of cohesion, and is preferably 2 parts by mass or less from the viewpoint of suppressing or preventing a decrease in adhesion due to excessive crosslinking.
  • the pressure-sensitive adhesive may, if necessary, be a filler, a pigment, a colorant, a filler, an antioxidant, which comprises a tackifier, a plasticizer, glass fiber, glass beads, metal powder, other inorganic powder, etc. It is also possible to suitably use an additive, an ultraviolet light absorber, a silane coupling agent and the like, and various additives without departing from the object of the present invention. Further, it may be a pressure-sensitive adhesive layer or the like which contains fine particles to exhibit light diffusibility.
  • the manufacturing method of the laminated body of this invention is not specifically limited, For example, it can carry out by the manufacturing method demonstrated below. However, the following description is an exemplification and does not limit the present invention.
  • gap layer which is a component of the laminated body of this invention may be called “the space
  • the method of producing the void layer of the present invention may be referred to as “the method of producing the void layer of the present invention”.
  • the void layer of the present invention may be formed of, for example, a silicon compound.
  • the void layer of the present invention may be, for example, a void layer formed by chemical bonding of fine pore particles.
  • the microporous particles may be a pulverized gel.
  • the gel pulverizing step for pulverizing the gel of the porous body may be performed in one step, but it is preferable to divide it into a plurality of pulverizing steps.
  • the number of grinding stages is not particularly limited, and may be, for example, two or three or more.
  • the shape of the “particles” is not particularly limited, and may be, for example, spherical or non-spherical.
  • the particles of the pulverized product may be, for example, sol-gel bead-like particles, nanoparticles (hollow nano silica / nano balloon particles), nano fibers, and the like.
  • the gel is preferably a porous gel, and the crushed product of the gel is preferably porous, but is not limited thereto.
  • the crushed gel product may have, for example, a structure having at least one of a particle shape, a fiber shape, and a plate shape.
  • the particulate and tabular structural units may be made of, for example, an inorganic substance.
  • the constituent element of the particulate structural unit may contain, for example, at least one element selected from the group consisting of Si, Mg, Al, Ti, Zn and Zr.
  • the structure (constituent unit) forming the particulate form may be a real particle or a hollow particle, and specific examples include silicone particles, silicone particles having fine pores, silica hollow nanoparticles, silica hollow nanoballoons and the like.
  • the fibrous structural unit is, for example, nanofibers having a diameter of nanosize, and specific examples thereof include cellulose nanofibers and alumina nanofibers.
  • Examples of the flat structural unit include nanoclay, and specific examples include nano-sized bentonite (for example, Kunipia F [trade name]) and the like.
  • the fibrous structural unit is not particularly limited, and, for example, from the group consisting of carbon nanofibers, cellulose nanofibers, alumina nanofibers, chitin nanofibers, chitosan nanofibers, polymer nanofibers, glass nanofibers, and silica nanofibers It may be at least one fibrous material selected.
  • the gel grinding step (for example, the plurality of grinding steps, for example, the first grinding step and the second grinding step) includes, for example, the “other solvent You may go inside.
  • the detail about the said "other solvent” is mentioned later.
  • the “solvent” for example, a solvent for gel production, a solvent for void layer production, a solvent for substitution, etc.
  • the “solvent” may not dissolve the gel or the pulverized product thereof, for example, the gel or its
  • the pulverized material or the like may be dispersed or precipitated in the solvent.
  • the volume average particle size of the gel after the first crushing step may be, for example, 0.5 to 100 ⁇ m, 1 to 100 ⁇ m, 1 to 50 ⁇ m, 2 to 20 ⁇ m, or 3 to 10 ⁇ m.
  • the volume average particle size of the gel after the second grinding step may be, for example, 10 to 1000 nm, 100 to 500 nm, or 200 to 300 nm.
  • the volume average particle size indicates the particle size variation of the pulverized material in the liquid containing the gel (gel-containing liquid).
  • the volume average particle diameter is measured, for example, by a particle size distribution evaluation apparatus such as a dynamic light scattering method or a laser diffraction method, and an electron microscope such as a scanning electron microscope (SEM) or a transmission electron microscope (TEM). Can.
  • the method for producing the void layer of the present invention includes, for example, a gelling step of gelling bulk porous body in a solvent to form the gel.
  • the gel gelated by the gelation step is used in the first grinding step (for example, the first grinding step) of the plurality of grinding steps.
  • the method for producing the void layer of the present invention includes, for example, a aging step of aging the gelled gel in a solvent.
  • the gel after the aging step is used in the first grinding step (for example, the first grinding step) of the plurality of grinding steps.
  • gap layer of this invention performs the said solvent substitution process which substitutes the said solvent for another solvent, for example after the said gelatinization process.
  • the gel in the other solvent is used in the first grinding stage (for example, the first grinding stage) of the plurality of grinding stages.
  • the shear viscosity of the liquid is measured Control the crushing of the porous body.
  • At least one of the plurality of grinding steps (for example, at least one of the first grinding step and the second grinding step) of the method for producing the void layer of the present invention is performed, for example, by high pressure medialess grinding.
  • the gel is, for example, a gel of a silicon compound containing at least a trifunctional or less saturated bonding functional group.
  • the gel-ground product-containing liquid obtained by the process including the gel-pulverizing process may be referred to as "the gel-ground product-containing liquid of the present invention”.
  • the coating film is formed, and the ground materials in the coating film are chemically bonded to each other to form the above-mentioned present invention as a functional porous body.
  • the gel ground material-containing liquid of the present invention has, for example, extremely excellent uniformity, so that, for example, when the void layer of the present invention is applied to applications such as optical members, the appearance is improved. be able to.
  • the gel ground material-containing liquid of the present invention is, for example, for coating (coating) the gel ground material-containing liquid on a substrate and further drying to obtain a layer (void layer) having a high porosity. It may be a gel-crushed liquid. Moreover, the gel ground material-containing liquid of the present invention may be, for example, a gel ground material-containing liquid for obtaining a high porosity porous body (thick bulk or bulk body in bulk). The bulk body can be obtained, for example, by performing bulk film formation using the gel ground material-containing liquid.
  • a process of producing the gel ground product-containing liquid of the present invention a process of coating the gel ground product-containing liquid on a substrate to form a coating film, and a process of drying the coating film
  • the void layer of the present invention having a high porosity can be produced by the production method including the above.
  • the step of producing the gel ground product-containing liquid of the present invention the step of feeding the roll-like resin film, and the coating of the gel ground product-containing liquid on the fed resin film
  • a manufacturing method including a step of forming a film, a step of drying the coating film, and a step of winding the laminated film in which the void layer of the present invention is formed on the resin film after the drying step.
  • the laminated film laminated film which is roll shape can be manufactured.
  • the gel ground material-containing liquid of the present invention contains, for example, the ground material of the gel ground by the gel grinding process (for example, the first grinding stage and the second grinding stage) and the other solvent.
  • the method for producing the void layer of the present invention may include, for example, a plurality of gel grinding steps for grinding the gel (for example, porous gel) as described above, for example, the first grinding A stage and the second grinding stage may be included.
  • the case where the method for producing the gel ground material-containing liquid of the present invention includes the first grinding step and the second grinding step will be mainly described as an example.
  • the case where the gel is a porous body (porous body gel) will be mainly described.
  • the present invention is not limited to this, and the explanation of the case where the gel is a porous body (porous body gel) can be applied by analogy except when the gel is a porous body.
  • the plurality of grinding steps for example, the first grinding step and the second grinding step in the method of manufacturing the void layer of the present invention may be referred to as a "gel grinding step".
  • the gel ground material-containing liquid of the present invention can be used, for example, for producing a functional porous body having the same function (for example, low refractive power) as that of an air layer, as described later.
  • the functional porous body may be, for example, the void layer of the present invention.
  • the gel-crushed material-containing liquid obtained by the production method of the present invention contains a crush of the porous gel, and the crush has the three-dimensional structure of the uncrushed porous gel broken. A new three-dimensional structure different from the uncrushed porous gel can be formed. For this reason, for example, a coated film (precursor of a functional porous body) formed using the gel ground material-containing liquid can not be obtained by the layer formed using the uncrushed porous body gel.
  • the functional porous body can be easily and easily applied to various objects.
  • the gel ground material-containing liquid obtained by the production method of the present invention is very useful, for example, in the production of the above-mentioned porous structure which can be a substitute for an air layer.
  • the air layer for example, it is necessary to form an air layer between the members by laminating the members and the members with a spacer or the like interposed therebetween via a spacer or the like.
  • the functional porous body formed using the gel ground material-containing liquid of the present invention can exhibit the same function as the air layer only by arranging the functional porous body at a target site. Therefore, as described above, the same function as the air layer can be given to various objects more easily and easily than forming the air layer.
  • the gel ground material-containing liquid of the present invention can also be referred to, for example, as a solution for forming the functional porous body or a solution for forming a void layer or a low refractive index layer.
  • the porous body is the ground material.
  • the range of the volume average particle diameter of the ground product is, for example, 10 to 1000 nm, 100 to 500 nm, and 200 to 300 nm.
  • the volume average particle size indicates the particle size variation of the pulverized material in the gel pulverized material-containing liquid of the present invention.
  • the volume average particle diameter is, for example, a particle size distribution evaluation apparatus such as a dynamic light scattering method or a laser diffraction method, and an electron microscope such as a scanning electron microscope (SEM) or a transmission electron microscope (TEM) It can be measured by
  • the gel concentration of the ground product is not particularly limited.
  • particles having a particle size of 10 to 1000 nm may be 2.5 to 4.5% by weight, 2.7 to It is 4.0% by weight, 2.8 to 3.2% by weight.
  • the gel for example, porous gel
  • examples thereof include silicon compounds and the like.
  • the silicon compound is not particularly limited, and examples thereof include silicon compounds containing at least a trifunctional or less saturated bond functional group.
  • the phrase "containing a saturated bond functional group having three or less functional groups" means that the silicon compound has three or less functional groups, and these functional groups have a saturated bond with silicon (Si).
  • the silicon compound is, for example, a compound represented by the following formula (2).
  • R 1 and R 2 are each a linear or branched alkyl group, R 1 and R 2 may be the same or different, R 1 may be the same or different from each other when X is 2; R 2 may be identical to or different from each other.
  • the X and R 1 are, for example, the same as X and R 1 in the formula (1) described later.
  • the R 2 is, for example, can be exemplified for R 1 is incorporated in the formula (1) described later.
  • the silicon compound shown to following formula (2 ') whose X is 3 is mentioned, for example.
  • R 1 and R 2 are each the same as the above-mentioned formula (2).
  • the silicon compound is trimethoxy (methyl) silane (hereinafter also referred to as “MTMS”).
  • examples of the solvent include a dispersion medium and the like.
  • the dispersion medium (hereinafter, also referred to as “coating solvent”) is not particularly limited, and examples thereof include a gelling solvent and a grinding solvent described later, and preferably the grinding solvent.
  • the coating solvent includes an organic solvent having a boiling point of 70 ° C. or more and less than 180 ° C., and a saturated vapor pressure at 20 ° C. of 15 kPa or less.
  • organic solvent examples include carbon tetrachloride, 1,2-dichloroethane, 1,1,2,2-tetrachloroethane, trichloroethylene, isobutyl alcohol, isopropyl alcohol, isopentyl alcohol, 1-pentyl alcohol (pentanol), Ethyl alcohol (ethanol), ethylene glycol monoethyl ether, ethylene glycol monoethyl ether acetate, ethylene glycol mono-normal-butyl ether, ethylene glycol monomethyl ether, xylene, cresol, chlorobenzene, isobutyl acetate, isopropyl acetate, isopropyl acetate, isopentyl acetate, ethyl acetate, Normal-butyl acetate, Normal-propyl acetate, Normal-pentyl acetate, cyclohexanol, cyclohexanone, 1,4-dioxa N, N-d
  • the gel ground product-containing liquid of the present invention examples include a sol particle liquid which is the sol-like ground product dispersed in the dispersion medium.
  • the gel ground product-containing liquid of the present invention is, for example, coated and dried on a substrate, and then chemically cross-linked by a bonding step described later to continuously form a void layer having a certain level or more of film strength. It is possible.
  • “sol” means that a pulverized product (that is, particles of a porous sol having a nano three-dimensional structure holding a part of a void structure) by crushing the three-dimensional structure of gel is contained in a solvent. It is a state of being dispersed in water and showing liquidity.
  • the gel ground product-containing liquid of the present invention may contain, for example, a catalyst for chemically bonding the ground products of the gel.
  • the content of the catalyst is not particularly limited, but is, for example, 0.01 to 20% by weight, 0.05 to 10% by weight, or 0.1 to 5% by weight based on the weight of the crushed product of the gel. .
  • the gel ground product-containing liquid of the present invention may further contain, for example, a cross-linking aid for indirectly bonding the ground products of the gel.
  • a cross-linking aid for indirectly bonding the ground products of the gel.
  • the content rate of the said crosslinking adjuvant is not specifically limited, For example, 0.01-20 weight% with respect to the weight of the ground material of the said gel, 0.05-15 weight%, or 0.1-10 weight% It is.
  • the proportion of functional groups not contributing to the in-gel cross-linking structure among the functional groups of the constituent unit monomers of the gel is, for example, 30 mol% or less, 25 mol% or less, 20 mol % Or less, or 15 mol% or less, and for example, 1 mol% or more, 2 mol% or more, 3 mol% or more, 4 mol% or more.
  • the proportion of functional groups not contributing to the in-gel crosslinked structure can be measured, for example, as follows.
  • gel ground material containing liquid is demonstrated.
  • the gel ground product-containing liquid of the present invention can be incorporated into the following description unless otherwise stated.
  • the mixing step is a step of mixing particles (ground material) of the porous gel and the solvent, and may or may not be present.
  • the mixing step for example, a step of mixing a dispersion of a ground product of a gel-like silicon compound (silicon compound gel) obtained from a silicon compound containing a saturated bonding functional group having at least three functions or less It can be mentioned.
  • the pulverized product of the porous gel can be obtained from the porous gel by the gel crushing step described later.
  • the pulverized product of the porous gel can be obtained, for example, from the porous gel after the aging treatment subjected to the aging step described later.
  • the gelling step is, for example, a step of gelling bulk porous body in a solvent to form the porous gel, and specific examples of the gelling step For example, the step of gelling the silicon compound containing the saturated functional group having at least three or less functional groups in a solvent to form a silicon compound gel.
  • the gelation step is, for example, a step of gelling the silicon compound of the monomer by a dehydration condensation reaction in the presence of a dehydration condensation catalyst, whereby a silicon compound gel is obtained.
  • the silicon compound gel preferably has, for example, a residual silanol group, and the residual silanol group is preferably adjusted appropriately in accordance with the chemical bond between the crushed products of the silicon compound gel described later.
  • the silicon compound is not particularly limited as long as it gels by dehydration condensation reaction.
  • the silicon compounds are bonded by the dehydration condensation reaction.
  • the bond between the silicon compounds is, for example, a hydrogen bond or an intermolecular force bond.
  • Examples of the silicon compound include silicon compounds represented by the following formula (1). Since the silicon compound of the formula (1) has a hydroxyl group, hydrogen bonds or intermolecular bonds can be made between the silicon compounds of the formula (1), for example, via the respective hydroxyl groups.
  • X is 2, 3 or 4 and R 1 is a linear or branched alkyl group.
  • the carbon number of R 1 is, for example, 1 to 6, 1 to 4, or 1 to 2.
  • Examples of the linear alkyl group include methyl group, ethyl group, propyl group, butyl group, pentyl group and hexyl group, and examples of the branched alkyl group include isopropyl group and isobutyl group.
  • the X is, for example, 3 or 4.
  • R 1 is the same as that of the above formula (1), and is, for example, a methyl group.
  • R 1 is a methyl group
  • the silicon compound is tris (hydroxy) methylsilane.
  • X is 3, the silicon compound is, for example, a trifunctional silane having three functional groups.
  • the silicon compound whose X is 4 is mentioned, for example.
  • the silicon compound is, for example, a tetrafunctional silane having four functional groups.
  • the silicon compound may be, for example, a precursor that forms the silicon compound of the formula (1) by hydrolysis.
  • the precursor may be, for example, one that can generate the silicon compound by hydrolysis, and specific examples include a compound represented by the formula (2).
  • the production method of the present invention may include, for example, a step of hydrolyzing the precursor prior to the gelation step.
  • the method of hydrolysis is not particularly limited, and can be performed by, for example, a chemical reaction in the presence of a catalyst.
  • the catalyst include acids such as oxalic acid and acetic acid.
  • the hydrolysis reaction can be performed, for example, by slowly adding an aqueous solution of oxalic acid dropwise to a dimethyl sulfoxide solution of the silicon compound precursor in a room temperature environment and then stirring for about 30 minutes as it is.
  • the subsequent heating / immobilization after gelation / aging / void structure formation is further performed. It can be expressed efficiently.
  • the silicon compound may be, for example, a hydrolyzate of trimethoxy (methyl) silane.
  • the silicon compound of the monomer is not particularly limited, and can be appropriately selected, for example, according to the application of the functional porous body to be produced.
  • the trifunctional silane is preferable from the viewpoint of excellent low refractive index, and strength (for example, scratch resistance)
  • the above-mentioned tetrafunctional silane is preferable from the viewpoint of excellent scratch resistance.
  • only one type of silicon compound may be used as a raw material of the silicon compound gel, or two or more types may be used in combination.
  • the silicon compound for example, only the trifunctional silane may be contained, only the tetrafunctional silane may be contained, or both of the trifunctional silane and the tetrafunctional silane may be contained. Furthermore, other silicon compounds may be included. When using two or more types of silicon compounds as said silicon compound, the ratio in particular is not restrict
  • the gelation of the porous body such as the silicon compound can be performed, for example, by a dehydration condensation reaction between the porous bodies.
  • the dehydration condensation reaction is preferably performed, for example, in the presence of a catalyst.
  • the catalyst include acid catalysts such as hydrochloric acid, oxalic acid and sulfuric acid, and ammonia, potassium hydroxide, sodium hydroxide, ammonium hydroxide and the like.
  • Dehydration condensation catalysts such as base catalysts of The dehydration condensation catalyst may be an acid catalyst or a base catalyst, but a base catalyst is preferable.
  • the amount of the catalyst added to the porous body is not particularly limited, and the amount of the catalyst is, for example, 0.01 to 10 mol, 0.05 to 7 mol, per 1 mol of the porous body. 0.1 to 5 moles.
  • the gelation of the porous material such as the silicon compound is preferably performed, for example, in a solvent.
  • the proportion of the porous body in the solvent is not particularly limited.
  • the solvent include dimethylsulfoxide (DMSO), N-methylpyrrolidone (NMP), N, N-dimethylacetamide (DMAc), dimethylformamide (DMF), ⁇ -butyl lactone (GBL), acetonitrile (MeCN), ethylene Glycol ethyl ether (EGEE) etc. are mentioned.
  • the solvent may be, for example, one type or two or more types in combination.
  • the solvent used for the gelation is also referred to as “gelation solvent”.
  • the conditions for the gelation are not particularly limited.
  • the treatment temperature for the solvent containing the porous body is, for example, 20 to 30 ° C., 22 to 28 ° C., 24 to 26 ° C., and the treatment time is, for example, 1 to 60 minutes, 5 to 40 minutes, 10 to 30. It is a minute.
  • the treatment conditions are not particularly limited, and these examples can be used.
  • the porous body is a silicon compound by performing the gelation, for example, a siloxane bond grows, a primary particle of the silicon compound is formed, and the reaction proceeds further, whereby the primary particles are attached to each other, A beaded, three-dimensional gel is formed.
  • the gel form of the porous body obtained in the gelation step is not particularly limited.
  • Gel generally refers to a solidified state in which a solute loses its independent mobility due to interaction, and has an aggregated structure.
  • a wet gel contains a dispersion medium, and the solute has a uniform structure in the dispersion medium, and the xerogel has a network structure in which the solvent is removed and the solute has a void.
  • a wet gel as the silicon compound gel.
  • the porous body gel is a silicon compound gel
  • the residual silanol group of the silicon compound gel is not particularly limited, and for example, the range described later can be exemplified as well.
  • the porous gel obtained by the gelation may be subjected, for example, to the solvent substitution step and the first grinding step as it is, but prior to the first grinding step, the aging treatment is carried out in the aging step. It may be applied.
  • the gelled porous body (porous body gel) is aged in a solvent.
  • the ripening step conditions of the ripening treatment are not particularly limited, and, for example, the porous gel may be incubated in a solvent at a predetermined temperature.
  • the primary particles can be further grown, whereby the size of the particles themselves can be increased. is there.
  • the contact state of the neck portion in which the particles are in contact with each other can be increased, for example, from point contact to surface contact.
  • the strength of the gel itself is increased, and as a result, the strength of the three-dimensional basic structure of the pulverized material after the pulverization can be further improved.
  • the lower limit of the temperature of the aging treatment is, for example, 30 ° C. or more, 35 ° C. or more, 40 ° C. or more, and the upper limit thereof is, for example, 80 ° C. or less, 75 ° C. or less, 70 ° C. or less.
  • the predetermined time is not particularly limited, and the lower limit thereof is, for example, 5 hours or more, 10 hours or more, 15 hours or more, and the upper limit thereof is, for example, 50 hours or less, 40 hours or less, 30 hours or less
  • the range is, for example, 5 to 50 hours, 10 to 40 hours, or 15 to 30 hours.
  • the optimal conditions of ripening for example, as mentioned above, it is preferable to set to the conditions which increase in the size of the said primary particle in the said porous body gel, and increase in the contact area of the said neck part are obtained.
  • the temperature of the ripening treatment for example, consider the boiling point of the solvent used. In the ripening process, for example, if the ripening temperature is too high, the solvent volatilizes excessively, and the concentration of the coating liquid may cause defects such as closing of pores of a three-dimensional void structure. is there.
  • the aging treatment can use, for example, the same solvent as the gelation step, and specifically, the reaction product after the gel treatment (that is, the solvent containing the porous gel) may be subjected as it is preferable.
  • the porous body gel is the silicon compound gel
  • the number of moles of residual silanol groups contained in the silicon compound gel after aging treatment after gelation may be, for example, the raw material used for gelation (for example, the above-mentioned The ratio of residual silanol groups when the number of moles of alkoxy groups in the silicon compound or precursor thereof is 100.
  • the lower limit is, for example, 50% or more, 40% or more, 30% or more
  • the upper limit is For example, it is 1% or less, 3% or less, 5% or less, and the range is, for example, 1 to 50%, 3 to 40%, or 5 to 30%.
  • the lower the number of moles of residual silanol groups the better.
  • the void structure may not be maintained until the precursor of the functional porous body is crosslinked.
  • the functional porous material precursor can not be crosslinked, and it may not be possible to impart sufficient film strength.
  • the above is an example of a residual silanol group, for example, when using what modified the said silicon compound by various reactive functional groups as a raw material of the said silicon compound gel, with respect to each functional group, it uses. The same phenomenon can be applied.
  • the porous gel obtained by the gelation is, for example, subjected to aging treatment in the aging step, then subjected to a solvent replacement step, and then subjected to the gel pulverizing step.
  • the solvent replacement step replaces the solvent with another solvent.
  • the gel crushing step is a step of crushing the porous gel as described above.
  • the pulverization may be performed, for example, on the porous gel after the gelation step, or may be further performed on the porous gel after the aging which has been subjected to the aging treatment.
  • a gel form control step may be performed to control the shape and size of the gel.
  • the shape and size of the gel to be controlled in the gel form control step are not particularly limited, and for example, are as described above.
  • the gel shape control step may be performed, for example, by dividing (for example, cutting) the gel into three-dimensional bodies (three-dimensional bodies) of appropriate sizes and shapes.
  • the gel is subjected to the solvent substitution step and then to the gel crushing step.
  • the solvent replacement step replaces the solvent with another solvent. If the solvent is not replaced with the other solvent, for example, the catalyst and the solvent used in the gelation step remain after the aging step, which further causes gelation with the passage of time, and gel pulverization is finally obtained. It is because there is a possibility that the drying efficiency at the time of drying the coating film formed using the gel-crushed material-containing liquid may decrease, etc., which may affect the pot life of the material-containing liquid.
  • the said other solvent in the said gel crushing process is also called "the solvent for grinding
  • the grinding solvent is not particularly limited, and, for example, an organic solvent can be used.
  • the organic solvent include solvents having a boiling point of 140 ° C. or less, 130 ° C. or less, a boiling point of 100 ° C. or less, and a boiling point of 85 ° C. or less. Specific examples thereof include isopropyl alcohol (IPA), ethanol, methanol, n-butanol, 2-butanol, isobutyl alcohol, pentyl alcohol, propylene glycol monomethyl ether (PGME), methyl cellosolve, acetone and the like.
  • the grinding solvent may be, for example, one type, or two or more types in combination.
  • the solvent substitution step is divided into a plurality of solvent substitution steps, and the later step in the solvent substitution step is more than the previous step.
  • the hydrophilicity of the other solvent may be lowered.
  • the solvent replacement step is divided into three solvent replacement steps, and in the first solvent replacement step, DMSO in the gel is first replaced with water, and then the second solvent replacement step is performed.
  • the water in the gel may be replaced with IPA, and in the third substitution step, the IPA in the gel may be replaced with isobutyl alcohol.
  • the combination of the gelation solvent and the grinding solvent is not particularly limited.
  • a combination of DMSO and IPA, a combination of DMSO and ethanol, a combination of DMSO and isobutyl alcohol, DMSO and n-butanol And the like is not particularly limited.
  • a combination of DMSO and IPA a combination of DMSO and IPA
  • a combination of DMSO and ethanol a combination of DMSO and isobutyl alcohol
  • DMSO and n-butanol And the like a more uniform coating film can be formed in the coating film formation described later.
  • the said solvent substitution process is not specifically limited, For example, it can carry out as follows. That is, first, the gel (for example, the gel after the aging treatment) produced by the gel production process is dipped or brought into contact with the other solvent, and the gel production catalyst in the gel, the alcohol component produced by the condensation reaction , Water, etc. are dissolved in the other solvent. Thereafter, the solvent in which the gel is immersed or contacted is discarded, and the gel is immersed or contacted again in a new solvent. This is repeated until the remaining amount of the gel producing solvent in the gel becomes a desired amount.
  • the gel for example, the gel after the aging treatment
  • the immersion time per one operation is, for example, 0.5 hours or more, 1 hour or more, or 1.5 hours or more, and the upper limit is not particularly limited, and is, for example, 10 hours or less.
  • the immersion of the solvent may also correspond to the continuous contact of the solvent with the gel.
  • the temperature during the immersion is not particularly limited, but may be, for example, 20 to 70 ° C., 25 to 65 ° C., or 30 to 60 ° C.
  • the solvent substitution proceeds quickly when heating is performed and the amount of solvent required for substitution is small, the solvent substitution may be carried out conveniently at room temperature.
  • each of the plurality of solvent replacement steps may be performed as described above.
  • the solvent substitution step is divided into a plurality of solvent substitution steps, and when the subsequent step is lower in hydrophilicity than the previous step, the other solvent (substitution solvent) is used. Is not particularly limited.
  • the other solvent (substitution solvent) is preferably a solvent for producing a void layer.
  • the solvent for producing the void layer include solvents having a boiling point of 140 ° C. or less.
  • the solvent for producing the void layer include alcohols, ethers, ketones, ester solvents, aliphatic hydrocarbon solvents, aromatic solvents and the like. Specific examples of alcohols having a boiling point of 140 ° C.
  • IPA isopropyl alcohol
  • ether having a boiling point of 140 ° C. or less
  • PGME propylene glycol monomethyl ether
  • ketone having a boiling point of 140 ° C. or less include, for example, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclopentanone and the like.
  • ester solvents having a boiling point of 140 ° C. or less include ethyl acetate, butyl acetate, isopropyl acetate, normal propyl acetate and the like.
  • Specific examples of aliphatic hydrocarbon solvents having a boiling point of 140 ° C. or less include, for example, hexane, cyclohexane, heptane, octane and the like.
  • aromatic solvent having a boiling point of 140 ° C. or less include, for example, toluene, benzene, xylene, anisole and the like.
  • the solvent for producing the void layer is preferably an alcohol, an ether or an aliphatic hydrocarbon solvent, from the viewpoint that the substrate (for example, a resin film) is not easily corroded.
  • one type of the grinding solvent may be used, or two or more types may be used in combination.
  • IPA isopropyl alcohol
  • ethanol ethanol
  • n-butanol 2-butanol
  • isobutyl alcohol IBA
  • pentyl alcohol propylene glycol monomethyl ether (PGME), methyl cellosolve, heptane and octane at low room temperature It is preferable from the aspect.
  • the saturated vapor pressure of the solvent for producing a void layer is not too high (the volatility is not too high).
  • a solvent for example, a solvent having an aliphatic group having 3 or 4 carbon atoms is preferable, and a solvent having an aliphatic group having 4 or more carbon atoms is more preferable.
  • the solvent having an aliphatic group having 3 or 4 carbon atoms may be, for example, an alcohol.
  • solvent specifically, for example, isopropyl alcohol (IPA), isobutyl alcohol (IBA), n-butanol, 2-butanol, 1-pentanol and 2-pentanol are preferable, and isobutyl alcohol (in particular, IBA) is preferred.
  • IPA isopropyl alcohol
  • IBA isobutyl alcohol
  • n-butanol 2-butanol
  • 1-pentanol and 2-pentanol 2-pentanol
  • isobutyl alcohol in particular, IBA
  • the said other solvent (solvent for substitution) in the said solvent substitution step performed at the end is not specifically limited,
  • alcohol, ether, a ketone etc. are mentioned.
  • the alcohol include, for example, isopropyl alcohol (IPA), ethanol, methanol, n-butanol, 2-butanol, isobutyl alcohol (IBA), pentyl alcohol and the like.
  • the ether include, for example, propylene glycol monomethyl ether (PGME), methyl cellosolve, ethyl cellosolve and the like.
  • PGME propylene glycol monomethyl ether
  • methyl cellosolve ethyl cellosolve
  • a ketone, acetone etc. are mentioned, for example.
  • the other solvent (displacement solvent) may be capable of replacing the solvent for gel production or the other solvent (displacement solvent) in the previous step.
  • the other solvent (replacement solvent) other than the solvent replacement step which is finally performed does not finally remain in the gel, or remains even if it remains in the base material (for example, resin film) at the time of coating.
  • the other solvent (substituting solvent) other than the above-mentioned solvent substitution step performed last is preferably an alcohol from the viewpoint of being hard to erode the substrate (for example, a resin film).
  • the other solvent is preferably an alcohol.
  • the other solvent may be, for example, water or a mixed solvent containing water in any proportion. Since water or a mixed solvent containing water has high compatibility with a highly hydrophilic gel-producing solvent (for example, DMSO), it is easy to replace the gel-producing solvent, and it is preferable from the viewpoint of cost.
  • a highly hydrophilic gel-producing solvent for example, DMSO
  • the plurality of solvent substitution steps are carried out after the other solvent is water, followed by the other solvent is a solvent having an aliphatic group having 3 or less carbon atoms, and the subsequent steps. And the step of including the step of the other solvent being a solvent having an aliphatic group having 4 or more carbon atoms.
  • at least one of the solvent having an aliphatic group having 3 or less carbon atoms and the solvent having an aliphatic group having 4 or more carbon atoms may be an alcohol.
  • the alcohol having an aliphatic group having 3 or less carbon atoms is not particularly limited, and examples thereof include isopropyl alcohol (IPA), ethanol, methanol, n-propyl alcohol and the like.
  • the alcohol having an aliphatic group having 4 or more carbon atoms is not particularly limited, and examples thereof include n-butanol, 2-butanol, isobutyl alcohol (IBA), pentyl alcohol and the like.
  • the solvent having an aliphatic group having 3 or less carbon atoms may be isopropyl alcohol, and the solvent having an aliphatic group having 4 or more carbon atoms may be isobutyl alcohol.
  • the present inventors have found that it is very important to focus on the residual amount of the solvent for gel production, for example, in order to form a porous layer having film strength under relatively mild conditions of 200 ° C. or less.
  • the This finding is not shown in the prior art including the above-mentioned patent documents and non-patent documents, but is a finding which the present inventors have uniquely found.
  • the solvent for gel production is preferably a high boiling point solvent (for example, DMSO etc.) in order to proceed with the gelation reaction.
  • the above-mentioned drying temperature and drying time (not particularly limited, for example, 1 minute at 100 ° C., etc.) It is difficult to completely remove the high boiling point solvent. If the drying temperature is too high or the drying time is too long, problems such as deterioration of the substrate may occur.
  • the “solvent” for example, a solvent for gel production, a solvent for void layer production, a solvent for substitution, etc.
  • the “solvent” may not dissolve the gel or the pulverized product thereof, for example, the gel or its
  • the pulverized material or the like may be dispersed or precipitated in the solvent.
  • the gel-producing solvent may have, for example, a boiling point of 140 ° C. or higher.
  • the solvent for gel production is, for example, a water-soluble solvent.
  • the "water-soluble solvent” refers to a solvent that can be mixed with water at an arbitrary ratio.
  • each solvent replacement step can be performed, for example, as follows. That is, first, the gel is dipped or brought into contact with the other solvent, and the gel-producing catalyst in the gel, the alcohol component generated by the condensation reaction, water and the like are dissolved in the other solvent. Thereafter, the solvent in which the gel is immersed or contacted is discarded, and the gel is immersed or contacted again in a new solvent. This is repeated until the remaining amount of the gel producing solvent in the gel becomes a desired amount.
  • the immersion time per one operation is, for example, 0.5 hours or more, 1 hour or more, or 1.5 hours or more, and the upper limit is not particularly limited, and is, for example, 10 hours or less.
  • the immersion of the solvent may also correspond to the continuous contact of the solvent with the gel.
  • the temperature during the immersion is not particularly limited, but may be, for example, 20 to 70 ° C., 25 to 65 ° C., or 30 to 60 ° C. Although the solvent substitution proceeds quickly when heating is performed and the amount of solvent required for substitution is small, the solvent substitution may be carried out conveniently at room temperature.
  • the other solvent substituted solvent
  • the other solvent substituted solvent
  • the reaction is performed multiple times.
  • a highly hydrophilic gel-producing solvent such as DMSO
  • water in the gel is replaced, for example, in the order of isopropyl alcohol ⁇ ⁇ ⁇ ⁇ ⁇ isobutyl alcohol (solvent for coating).
  • solvent substitution can be efficiently performed by substituting isopropyl alcohol once and then substituting it with isobutyl alcohol which is a coating solvent.
  • the other solvent solvent for substitution
  • the other solvent is not particularly limited.
  • the other solvent substituted with a solvent having high hydrophilicity to a low hydrophilicity (high hydrophobicity) ) It may be changed into a solvent and may be performed multiple times. According to this, as described above, the remaining amount of the gel producing solvent in the gel can be extremely reduced. Not only that, for example, it is also possible to reduce the amount of solvent used and reduce the cost as compared to performing solvent substitution in one step using only a coating solvent.
  • a gel pulverizing step of pulverizing the gel in the pulverizing solvent is performed.
  • gel concentration measurement may be performed as necessary, and thereafter, the gel concentration adjusting step may be performed as necessary. good.
  • the gel concentration measurement after the solvent replacement step and before the gel crushing step can be performed, for example, as follows. That is, first, after the solvent replacement step, the gel is taken out of the other solvent (grinding solvent). This gel is controlled, for example, into a mass of appropriate shape and size (for example, block shape) by the gel shape control step.
  • the solid concentration in one gel mass is measured by a weight drying method.
  • the measurement is performed on a plurality of (for example, six) chunks taken out at random, and the variation between the average value and the value is calculated.
  • the concentration adjustment step for example, the gel concentration of the gel-containing liquid may be reduced by further adding the other solvent (grinding solvent).
  • the concentration adjusting step conversely, the gel concentration of the gel-containing liquid may be increased by evaporating the other solvent (grinding solvent).
  • the gel grinding process may be performed in one step, but it is preferable to divide the process into a plurality of grinding steps. Specifically, for example, the first grinding step and the second grinding step may be performed. In addition to the first grinding step and the second grinding step, the gel grinding step may be further subjected to a gel grinding step. That is, in the manufacturing method of the present invention, the gel grinding process is not limited to only two grinding stages, and may include three or more grinding stages.
  • a liquid for example, a suspension
  • a catalyst that chemically bonds the microporous particles to each other is added to produce the liquid containing the microporous particles and the catalyst.
  • the addition amount of the catalyst is not particularly limited, it is, for example, 0.01 to 20% by weight, 0.05 to 10% by weight, or 0.1 to 5% by weight based on the weight of the ground product of the gel-like silicon compound. %.
  • the catalyst may be, for example, a catalyst that promotes cross-linking between the fine pore particles.
  • the catalyst include photoactive catalysts and thermally active catalysts.
  • the microporous particles can be chemically bonded (for example, cross-linked) in the void layer forming step without heating. According to this, for example, since contraction of the entire void layer is unlikely to occur in the void layer forming step, it is possible to maintain a higher porosity.
  • a substance that generates a catalyst may be used.
  • a substance that generates a catalyst by light may be used, and in addition to or instead of the thermally active catalyst, the catalyst by heat. You may use the substance (thermal catalyst generator) which generate
  • the photocatalytic generator include, but are not particularly limited to, photobase generator (substance generating a basic catalyst by light irradiation), photoacid generator (substance generating an acidic catalyst by light irradiation), etc. And photo base generators are preferred.
  • Examples of the photobase generator include 9-anthrylmethyl N, N-diethylcarbamate (9-anthrylmethyl N, N-diethylcarbamate, trade name WPBG-018), (E) -1- [3- (2-) Hydroxyphenyl) -2-propenoyl] piperidine ((E) -1- [3- (2-hydroxyphenyl) -2-propenoyl] piperidine, trade name WPBG-027), 1- (anthraquinone-2-yl) ethyl imidazole carboxy (1- (anthraquinon-2-yl) ethyl imidazolecarboxylate, trade name WPBG-140), 2-nitrophenylmethyl 4-methacryloyloxypiperidine-1-carboxylate (trade name WPBG-165), 1,2-diisopropyl- 3- [bis (dimethylamino) methylene] guanidinium 2- (3-benzoylphenyl) prop
  • WPBG Wako Pure Chemical Industries, Ltd.
  • the photoacid generator include aromatic sulfonium salt (trade name SP-170: manufactured by ADEKA), triarylsulfonium salt (trade name CPI101A: manufactured by San Apro), aromatic iodonium salt (trade name: Irgacure 250: Ciba Japan) Company) etc.
  • the catalyst that chemically bonds the fine pore particles is not limited to the photoactive catalyst and the photocatalytic generator, and may be, for example, a thermally active catalyst or a thermal catalyst generator.
  • the catalyst for chemically bonding the fine pore particles examples include a base catalyst such as potassium hydroxide, sodium hydroxide and ammonium hydroxide, and an acid catalyst such as hydrochloric acid, acetic acid and oxalic acid. Of these, base catalysts are preferred.
  • the catalyst or catalyst generator for chemically bonding the fine pore particles to each other is used, for example, by adding it to a sol particle liquid (for example, suspension) containing the pulverized material (fine pore particles) immediately before coating. Or, the catalyst or catalyst generator can be used as a mixed solution mixed with a solvent.
  • the liquid mixture is, for example, a coating liquid directly added to and dissolved in the sol particle liquid, a solution in which the catalyst or catalyst generator is dissolved in a solvent, or a dispersion liquid in which the catalyst or catalyst generator is dispersed in a solvent May be.
  • the solvent is not particularly limited, and examples thereof include water, a buffer solution and the like.
  • a minute amount of high boiling point solvent is added to the fine pore particle containing liquid to improve the film appearance at the time of film formation by coating. It becomes possible.
  • the amount of the high boiling point solvent is not particularly limited, but is, for example, 0.05 times to 0.8 times, 0.1 times to 0.5 times, particularly 0 times the solid content of the fine pore particle-containing liquid. 15 times to 0.4 times the amount.
  • the high boiling point solvent is not particularly limited, and examples thereof include dimethylsulfoxide (DMSO), N, N-dimethylformamide (DMF), N, N-dimethylacetamide (DMAc), N-methylpyrrolidone (NMP), and ⁇ - Butyl lactone (GBL), ethylene glycol ethyl ether (EGEE) and the like can be mentioned.
  • DMSO dimethylsulfoxide
  • DMF N, N-dimethylformamide
  • DMAc N-dimethylacetamide
  • NMP N-methylpyrrolidone
  • GBL ⁇ - Butyl lactone
  • EGEE ethylene glycol ethyl ether
  • the high boiling point solvent is considered to act as a leveling agent in forming a film in which particles are formed side by side. It is preferable to use the above-mentioned high boiling point solvent also at the time of gel synthesis.
  • the added high-boiling point solvent remains in the film skeleton even after film formation, and is considered to affect the penetration of the pressure-sensitive adhesive directly laminated on the film into the voids in the film. That is, it is presumed that the difference in solvent solubility of a slight pressure-sensitive adhesive in a high-boiling point solvent in the film is one of the factors that cause the difference in the penetration of the pressure-sensitive adhesive into the pores in the film.
  • these mechanisms are illustrative and do not limit the present invention at all.
  • the precursor can also be referred to as a coated film, for example.
  • the void layer of the present invention for example, a porous structure having the same function as the air layer is formed.
  • the reason is presumed, for example, as follows, but the present invention is not limited to this assumption.
  • gap layer of this invention is a silicone porous body is mentioned as an example, and is demonstrated.
  • the gel ground product-containing liquid of the present invention used in the method for producing the silicone porous body contains the ground product of the silicon compound gel
  • the three-dimensional structure of the gel-like silica compound is dispersed in a three-dimensional basic structure It is in a state of being For this reason, in the method for producing a silicone porous body, for example, when the precursor (for example, a coated film) is formed using the gel-ground material-containing liquid, the three-dimensional basic structure is deposited, and the three-dimensional basic structure is deposited. A void structure based on the structure is formed.
  • the void layer (for example, a silicone porous body) obtained by the present invention can be used, for example, as a member utilizing a void, in a wide range of products such as a heat insulating material, a sound absorbing material, an optical member, and an ink image receiving layer, Furthermore, a laminated film provided with various functions can be produced.
  • the method for producing the void layer of the present invention can be applied to the description of the gel ground material-containing liquid of the present invention unless otherwise stated.
  • the gel ground product-containing liquid of the present invention is coated on the substrate.
  • the gel ground product-containing liquid of the present invention is, for example, coated on a substrate and dried, and then the ground products are chemically bonded (for example, crosslinked) in the bonding step. It is possible to continuously form a void layer having a film strength of a certain level or more.
  • the coating amount of the gel ground product-containing liquid to the base material is not particularly limited, and can be appropriately set according to, for example, the desired thickness of the void layer of the present invention.
  • the case of forming the silicone porous having a thickness of 0.1 ⁇ 1000 .mu.m the coating amount of the gel pulverized product containing liquid to the substrate, the area 1 m 2 per of the substrate, for example, the pulverized product 0.01 to 60000 ⁇ g, 0.1 to 5000 ⁇ g, and 1 to 50 ⁇ g.
  • the preferable coating amount of the gel-ground product-containing liquid is difficult to define uniquely because it is related to, for example, the concentration of the liquid, the coating method, etc., but considering the productivity, it is coated as thin as possible It is preferable to do. If the coating amount is too large, for example, the possibility of drying in a drying oven before the solvent is volatilized is high. As a result, the nano-ground sol particles are precipitated and deposited in the solvent, and the solvent is dried before the formation of the void structure, whereby the formation of the void may be inhibited and the porosity may be greatly reduced. On the other hand, when the coating amount is too thin, there is a possibility that the risk of occurrence of coating repelling may increase due to unevenness of the base material and variations in hydrophilicity and hydrophobicity.
  • the porous body precursor (coated film) may be subjected to a drying treatment.
  • a drying treatment for example, not only the solvent in the precursor of the porous body (the solvent contained in the gel-crushed liquid) is removed, but also sol particles are precipitated and deposited during the drying process, The purpose is to form a structure.
  • the temperature of the drying process is, for example, 50 to 250 ° C., 60 to 150 ° C., 70 to 130 ° C., and the time of the drying process is, for example, 0.1 to 30 minutes, 0.2 to 10 minutes, 0 .3 to 3 minutes.
  • drying processing temperature and time for example, lower and shorter are preferable in the context of continuous productivity and development of high porosity.
  • the conditions are too severe, for example, when the substrate is a resin film, the substrate is stretched in a drying furnace by approaching the glass transition temperature of the substrate, and is formed immediately after coating. Defects such as cracks may occur in the void structure.
  • the conditions are too loose, for example, since the residual solvent is included at the timing of leaving the drying furnace, there is a possibility that appearance defects such as scratching may occur when rubbing with the roll in the next step. is there.
  • the drying process may be, for example, natural drying, heat drying, or vacuum drying.
  • the drying method is not particularly limited, and, for example, general heating means can be used.
  • the heating unit include a hot air heater, a heating roll, and a far infrared heater. Among them, it is preferable to use heat drying on the premise of industrially continuous production.
  • a solvent having low surface tension is preferred for the purpose of suppressing the occurrence of shrinkage stress associated with solvent evaporation during drying and the cracking of the void layer (the silicone porous body) thereby.
  • the solvent include, but are not limited to, lower alcohols represented by isopropyl alcohol (IPA), hexane, perfluorohexane and the like.
  • the substrate is not particularly limited, and for example, a substrate made of a thermoplastic resin, a substrate made of glass, an inorganic substrate typified by silicon, a plastic molded with a thermosetting resin or the like, an element such as a semiconductor, Although a carbon fiber material represented by carbon nanotubes can be preferably used, it is not limited thereto.
  • the form of the substrate is, for example, a film, a plate or the like.
  • the thermoplastic resin is, for example, polyethylene terephthalate (PET), acrylic, cellulose acetate propionate (CAP), cycloolefin polymer (COP), triacetyl cellulose (TAC), polyethylene naphthalate (PEN), polyethylene (PE) And polypropylene (PP).
  • the bonding step is a step of chemically bonding the pulverized materials contained in the precursor (coated film) of the porous body.
  • the bonding step for example, the three-dimensional structure of the crushed material in the precursor of the porous body is immobilized.
  • the conventional immobilization by sintering for example, by performing a high temperature treatment at 200 ° C. or higher, dehydration condensation reaction of silanol groups and formation of a siloxane bond are induced.
  • the bonding step in the present invention by reacting various additives catalyzing the above-mentioned dehydration condensation reaction, for example, when the substrate is a resin film, around 100 ° C. without causing damage to the substrate.
  • the void structure can be formed and immobilized continuously, with a relatively low drying temperature and a short processing time of less than a few minutes.
  • the method for chemically bonding is not particularly limited, and can be appropriately determined according to, for example, the type of the gel (for example, a silicon compound gel).
  • the chemical bonding can be performed by, for example, chemical crosslinking of the pulverized materials, and in addition, for example, inorganic particles such as titanium oxide are added to the pulverized materials.
  • inorganic particles such as titanium oxide are added to the pulverized materials.
  • a biocatalyst such as an enzyme
  • the present invention is not limited to the application development of, for example, the organic / inorganic hybrid void layer, the host guest void layer, etc., as well as the void layer formed of the sol particles.
  • the binding step can be carried out, for example, by a chemical reaction in the presence of a catalyst, depending on the type of ground product of the gel (eg, silicon compound gel).
  • a chemical reaction in the present invention it is preferable to use a dehydration condensation reaction of residual silanol groups contained in the ground product of the silicon compound gel.
  • the catalyst include base catalysts such as potassium hydroxide, sodium hydroxide and ammonium hydroxide, and acid catalysts such as hydrochloric acid, acetic acid and oxalic acid, but not limited thereto.
  • the catalyst for the dehydration condensation reaction is particularly preferably a base catalyst.
  • a photoacid generation catalyst, a photobase generation catalyst, and the like can be preferably used, which exhibit catalytic activity by irradiation with light (for example, ultraviolet light).
  • the photoacid generation catalyst and the photobase generation catalyst are not particularly limited, and for example, they are as described above.
  • the catalyst is preferably added to the sol particle liquid containing the pulverized product immediately before coating, or used as a mixed solution in which the catalyst is mixed with a solvent.
  • the liquid mixture may be, for example, a coating liquid directly added to and dissolved in the sol particle liquid, a solution in which the catalyst is dissolved in a solvent, or a dispersion in which the catalyst is dispersed in a solvent.
  • the solvent is not particularly limited, and as described above, for example, water, a buffer solution and the like can be mentioned.
  • a crosslinking aid may be added to the gel-containing liquid of the present invention to indirectly bond the crushed products of the gel.
  • the cross-linking aid intervenes between the particles (the crushed material), and the interaction between the particles and the cross-linking aid or bonding makes it possible to bond the particles which are slightly apart in the distance, It is possible to increase the strength efficiently.
  • a multicrosslinking silane monomer is preferable.
  • the multi-crosslinked silane monomer has, for example, an alkoxysilyl group of 2 or more and 3 or less, and the chain length between the alkoxysilyl groups may be 1 to 10 carbon atoms, and an element other than carbon May also be included.
  • crosslinking aid examples include bis (trimethoxysilyl) ethane, bis (triethoxysilyl) ethane, bis (trimethoxysilyl) methane, bis (triethoxysilyl) methane, bis (triethoxysilyl) propane, and bis.
  • the addition amount of the crosslinking aid is not particularly limited, and, for example, 0.01 to 20% by weight, 0.05 to 15% by weight, or 0.1 to 10% by weight based on the weight of the ground product of the silicon compound. It is
  • the chemical reaction in the presence of the catalyst may be, for example, light irradiation or heating of the coating film containing the catalyst or catalyst generator added in advance to the gel-pulverized liquid, or the coating film.
  • light irradiation or heating, or light irradiation or heating while spraying the catalyst or the catalyst generator can be performed.
  • the catalyst is a photoactive catalyst
  • the microporous particles can be chemically bonded to form the silicone porous body by light irradiation.
  • the catalyst is a thermally activated catalyst
  • the fine porous particles can be chemically bonded to form the silicone porous body by heating.
  • Light irradiation amount in the irradiation (energy) is not particularly limited, @ in 360nm terms, for example, 200 ⁇ 800mJ / cm 2, 250 ⁇ 600mJ / cm 2 or 300 ⁇ 400mJ / cm 2,.
  • the integrated light quantity of 200 mJ / cm 2 or more is preferable from the viewpoint of preventing the irradiation amount from being insufficient and the decomposition due to light absorption of the catalyst generator not progressing and the effect becoming insufficient.
  • the integrated light quantity of 800 mJ / cm 2 or less is good.
  • the wavelength of the light in the light irradiation is not particularly limited, and is, for example, 200 to 500 nm and 300 to 450 nm.
  • the irradiation time of the light in the light irradiation is not particularly limited, and is, for example, 0.1 to 30 minutes, 0.2 to 10 minutes, or 0.3 to 3 minutes.
  • the conditions of the heat treatment are not particularly limited, and the heating temperature is, for example, 50 to 250 ° C., 60 to 150 ° C., 70 to 130 ° C., and the heating time is, for example, 0.1 to 30 minutes. 0.2 to 10 minutes, 0.3 to 3 minutes.
  • a solvent having low surface tension is preferable in order to suppress the generation of shrinkage stress accompanying solvent evaporation at the time of drying and the crack phenomenon of the void layer due to it.
  • examples thereof include, but are not limited to, lower alcohols represented by isopropyl alcohol (IPA), hexane, perfluorohexane and the like.
  • the void layer (for example, a silicone porous body) of the present invention can be produced.
  • the method for producing the void layer of the present invention is not limited to the above.
  • the void layer of the present invention which is a silicone porous body may be hereinafter referred to as "the silicone porous body of the present invention”.
  • an adhesive layer is further formed on the void layer of the present invention (adhesive layer forming step).
  • the pressure-sensitive adhesive layer may be formed by applying (applying) a pressure-sensitive adhesive or an adhesive on the void layer of the present invention.
  • the viscous bond is provided on the void layer of the present invention
  • the substrate such as the pressure-sensitive adhesive tape may be bonded as it is or may be peeled off from the adhesive and pressure-sensitive adhesive layer.
  • the thickness can be significantly reduced by peeling the base material and forming a void-containing adhesive sheet containing no base material (without base material), and the thickness of a device or the like can be reduced. It is possible to suppress the increase.
  • the "pressure-sensitive adhesive” and the "pressure-sensitive adhesive layer” refer to, for example, an agent or layer on the premise of reattachment of an adherend.
  • adherend and “adhesion layer” refer to, for example, an agent or layer that does not presuppose re-detachment of an adherend.
  • the pressure-sensitive adhesive or adhesive forming the above-mentioned adhesive and pressure-sensitive adhesive layer is not particularly limited, and, for example, a general pressure-sensitive adhesive or adhesive can be used.
  • the pressure-sensitive adhesive or adhesive include adhesives made of polymers such as acrylics, vinyl alcohols, silicones, polyesters, polyurethanes, and polyethers, rubber adhesives, and the like.
  • adhesives and the like composed of a water-soluble crosslinking agent of vinyl alcohol polymers such as glutaraldehyde, melamine and oxalic acid.
  • the adhesive mentioned above is mention
  • the pressure-sensitive adhesive and the adhesive may be used alone or in combination (for example, mixing, laminating, etc.).
  • the adhesive layer can protect the void layer from physical damage (particularly, abrasion).
  • the pressure-sensitive adhesive layer has excellent pressure resistance so that the void layer is not crushed even when the void-containing pressure-sensitive adhesive sheet does not have a substrate (without a substrate). It is not limited.
  • the thickness of the tacky-adhesive layer is not particularly limited, and is, for example, 0.1 to 100 ⁇ m, 5 to 50 ⁇ m, 10 to 30 ⁇ m, or 12 to 25 ⁇ m.
  • the void layer of the present invention obtained in this manner may be, for example, further laminated with another film (layer) to form a laminated structure including the porous structure.
  • each component in the laminated structure, each component may be laminated, for example, via the pressure-sensitive adhesive layer (pressure-sensitive adhesive or adhesive).
  • the layers may be laminated by, for example, continuous processing using a long film (so-called Roll to Roll, etc.) because they are efficient.
  • the layers may be stacked after batch processing.
  • FIG. 2 shows the process of bonding and winding a protective film after forming the void layer (silicon porous body), the above method is used when laminating on another functional film. After coating and drying another functional film, the void layer on which the film formation has been performed may be bonded immediately before winding.
  • the illustrated film forming method is merely an example, and the present invention is not limited thereto.
  • the substrate may be the above-described resin film.
  • the formation of the void layer on the base material provides the void layer of the present invention.
  • the void layer of the present invention can also be obtained by laminating the void layer on the resin film described above in the description of the void layer of the present invention after forming the void layer on the base material.
  • the method of forming the void layer is a coating step of applying a sol particle solution 20 ′ ′ of a pulverized product of the gel-like compound onto a substrate (resin film) 10 to form a coating film.
  • the chemical treatment step (crosslinking step) (3) corresponds to the "void layer forming step" in the method for producing a laminated film of the present invention.
  • the intermediate layer formation step (5) improves the strength of the void layer 20 (crosslinking reaction step in which the crosslinking reaction is caused in the void layer 20).
  • the void layer 20 is changed to the void layer 21 with improved strength.
  • this invention is not limited to this,
  • gap layer 20 does not need to change after the intermediate
  • the adhesive / adhesive layer forming step is not limited to the application of the adhesive / adhesive layer, but may be bonding of an adhesive tape having an adhesive / adhesive layer.
  • a laminated film in which the void layer 21, the intermediate layer 22, and the tacky-adhesive layer 30 are laminated in the above order on the resin film 10 is manufactured. It can. However, there is no middle layer formation process (5), and the layered product of the present invention manufactured does not need to contain a middle layer. Furthermore, the method for producing a laminated film of the present invention may or may not appropriately include steps other than the steps (1) to (5).
  • the coating method of sol particle liquid 20 '' is not specifically limited, A general coating method is employable.
  • the coating method include slot die method, reverse gravure coating method, microgravure method (microgravure coating method), dip method (dip coating method), spin coating method, brush coating method, roll coating method, flexographic printing Methods, wire bar coating method, spray coating method, extrusion coating method, curtain coating method, reverse coating method and the like.
  • the extrusion coating method, the curtain coating method, the roll coating method, the microgravure coating method and the like are preferable from the viewpoints of productivity, smoothness of the coating film, and the like.
  • the coating amount of the sol particle liquid 20 ′ ′ is not particularly limited, and can be appropriately set, for example, so that the thickness of the void layer 20 becomes appropriate.
  • the thickness of the air gap layer 21 is not particularly limited, and is, for example, as described above.
  • the sol particle liquid 20 ′ ′ is dried (that is, the dispersion medium contained in the sol particle liquid 20 ′ ′ is removed), and the coating film after drying (precursor of the void layer) 20 Form '.
  • the conditions for the drying treatment are not particularly limited, and are as described above.
  • the coated film 20 containing the catalyst or the catalyst generator (for example, a photoactive catalyst, a photo catalyst generator, a thermally activated catalyst or a thermal catalyst generator) added before coating
  • the crushed materials in the coated film 20 ′ are chemically bonded (eg, crosslinked) to form the void layer 20 by light irradiation or heating.
  • the light irradiation or heating conditions in the chemical treatment step (3) are not particularly limited, and are as described above.
  • Adhesive-adhesive-layer coating process (adhesive-adhesive layer forming process) (4) includes, for example, a heating process for heating the adhesive after coating, in addition to the process for applying the adhesive Good.
  • the pressure-sensitive adhesive is a pressure-sensitive adhesive composition containing a polymer (for example, a (meth) acrylic polymer) and a crosslinking agent
  • the polymer may be crosslinked by the crosslinking agent in the heating step.
  • the heating step may also serve, for example, as the step of drying the pressure-sensitive adhesive.
  • the heating step may also be performed as the intermediate layer forming step (5).
  • the temperature of the heating step is not particularly limited, and is, for example, 70 to 160 ° C., 80 to 155 ° C., 90 to 150 ° C.
  • the time of the heating step is not particularly limited, and is, for example, 1 to 10 minutes, 1 to 7 minutes, or 2 to 5 minutes.
  • FIG. 2 schematically shows an example of a coating apparatus of the slot die method and a method of forming the void layer using the coating apparatus.
  • FIG. 2 is a cross-sectional view, hatches are omitted for the sake of easy viewing.
  • each step in the method using this apparatus is performed while conveying the substrate 10 in one direction by a roller.
  • the transport speed is not particularly limited, and is, for example, 1 to 100 m / min, 3 to 50 m / min, or 5 to 30 m / min.
  • the coating roll 102 performs the coating step (1) of applying the sol particle liquid 20 ′ ′ to the substrate 10, followed by the oven zone Transfer to the drying step (2) in 110.
  • a preliminary drying process is performed prior to the drying process (2) after the coating process (1).
  • the pre-drying step can be performed at room temperature without heating.
  • the heating means 111 is used.
  • the heating unit 111 as described above, a hot air heater, a heating roll, a far infrared heater, or the like can be appropriately used.
  • the drying step (2) may be divided into a plurality of steps, and the drying temperature may be increased as the subsequent drying step proceeds.
  • the chemical treatment step (3) is performed in the chemical treatment zone 120.
  • the chemical treatment step (3) for example, when the coated film 20 ′ after drying contains a photoactive catalyst, light irradiation is performed by a lamp (light irradiation means) 121 disposed above and below the substrate 10.
  • the hot air heater 121 disposed on the upper and lower sides of the substrate 10 using the hot air heater (heating means) instead of the lamp (light irradiation device) 121.
  • the substrate 10 is heated at By this crosslinking treatment, chemical bonding of the crushed materials in the coating film 20 'occurs, and the void layer 20 is cured and strengthened.
  • the drying step (2) may double as the chemical treatment step (3).
  • the chemical treatment step (3) may be further performed to further strengthen the chemical bond between the pulverized materials.
  • Bonding may occur in the step prior to the drying step (2) (for example, the preliminary drying step, the coating step (1), the step of preparing a coating liquid (for example, suspension), etc.) Bonding may occur.
  • the adhesive or the adhesive is applied (coated) on the void layer 20 by the adhesive layer coating means 131a in the adhesive layer coating zone 130a.
  • the adhesive and adhesive layer coating step (adhesive and adhesive layer forming step) (4) for forming the adhesive layer 30 is performed. Further, as described above, instead of applying (coating) the pressure-sensitive adhesive or the adhesive, bonding (sticking) of a pressure-sensitive adhesive tape or the like having the pressure-sensitive adhesive layer 30 may be used.
  • the intermediate layer formation step (aging step) (5) is performed in the intermediate layer formation zone (aging zone) 130, and the void layer 20 and the adhesive layer 30 are reacted to form the intermediate layer 22.
  • the void layer 20 is subjected to a crosslinking reaction inside to form the void layer 21 whose strength is improved.
  • the intermediate layer forming step (aging step) (5) is performed by heating the air gap layer 20 and the adhesive and pressure-sensitive adhesive layer 30 using, for example, hot air blowers (heating means) 131 disposed above and below the substrate 10 good.
  • the heating temperature, time, and the like are not particularly limited, but are, for example, as described above.
  • the laminate having the void layer 21 formed on the base material 10 is wound up by the take-up roll 105.
  • gap layer 21 of the said laminated body is covered and protected with the protective sheet drawn
  • the protective sheet instead of the protective sheet, another layer formed of a long film may be laminated on the void layer 21.
  • FIG. 3 schematically shows an example of a microgravure method (microgravure coating method) coating apparatus and a method for forming the void layer using the same.
  • the hatch is abbreviate
  • each step in the method using this apparatus is performed while conveying the base material 10 in one direction by a roller as in FIG.
  • the transport speed is not particularly limited, and is, for example, 1 to 100 m / min, 3 to 50 m / min, or 5 to 30 m / min.
  • the coating step (1) of applying the sol particle liquid 20 ′ ′ to the substrate 10 is performed.
  • Coating of the sol particle solution 20 ′ ′ is performed using a reservoir 202, a doctor (doctor knife) 203 and a microgravure 204 as illustrated.
  • the sol particle liquid 20 ′ ′ stored in the liquid reservoir 202 is attached to the surface of the microgravure 204, and the microgravure 204 is used to control the substrate 10 while controlling the thickness to a predetermined value with the doctor 203. Apply to the surface.
  • the microgravure 204 is an illustration and is not limited to this, You may use another arbitrary coating means.
  • the drying step (2) is performed. Specifically, as shown in the drawing, the substrate 10 coated with the sol particle solution 20 ′ ′ is transported into the oven zone 210, and the sol particle solution 20 ′ is heated by the heating unit 211 in the oven zone 210. 'Dry it.
  • the heating means 211 may be similar to, for example, FIG. Also, for example, by dividing the oven zone 210 into a plurality of divisions, the drying step (2) may be divided into a plurality of steps, and the drying temperature may be increased as the subsequent drying step proceeds.
  • a chemical treatment step (3) is performed in the chemical treatment zone 220.
  • the chemical treatment step (3) for example, when the coated film 20 ′ after drying contains a photoactive catalyst, light is irradiated by a lamp (light irradiation means) 221 disposed above and below the substrate 10.
  • a lamp light irradiation means
  • the hot air heater heating device
  • the substrate 10 is heated.
  • the crosslinking treatment chemical bonding of the pulverized materials in the coating film 20 ′ occurs to form the void layer 20.
  • the adhesive or the adhesive is applied (coated) on the void layer 20 by the adhesive layer coating means 231a in the adhesive layer coating zone 230a.
  • the adhesive and adhesive layer coating step (adhesive and adhesive layer forming step) (4) for forming the adhesive layer 30 is performed. Further, as described above, instead of applying (coating) the pressure-sensitive adhesive or the adhesive, bonding (sticking) of a pressure-sensitive adhesive tape or the like having the pressure-sensitive adhesive layer 30 may be used.
  • the intermediate layer formation step (aging step) (5) is performed in the intermediate layer formation zone (aging zone) 230, and the void layer 20 and the adhesive layer 30 are reacted to form the intermediate layer 22.
  • the void layer 20 becomes the void layer 21 whose strength is improved.
  • the intermediate layer forming step (aging step) (5) may be performed, for example, by heating the air gap layer 20 and the adhesive and pressure-sensitive adhesive layer 30 using hot air heaters (heating means) 231 disposed above and below the substrate 10 good.
  • the heating temperature, time, and the like are not particularly limited, but are, for example, as described above.
  • the laminated film in which the void layer 21 is formed on the base material 10 is wound up by the winding roll 251. After that, for example, another layer may be laminated on the laminated film. Further, before the laminated film is taken up by the take-up roll 251, another layer may be laminated on the laminated film, for example.
  • the number of parts (relative use amount) of each substance is parts by weight (parts by weight) unless otherwise specified.
  • the storage elastic modulus at 23 ° C. of the mucoadhesive layer, the gel fraction of the mucoadhesive layer, the thickness of each layer, the weight average of the sol of the mucoadhesive layer was measured by the following measurement method, respectively.
  • the storage elastic modulus at 23 ° C. of the adhesive layer was measured by the following method. That is, first, a sheet (layer) which is the same as the adhesive and pressure-sensitive adhesive layer in each of the following reference examples, examples and comparative examples was formed except that it was a sheet having a thickness of 2 mm. The sheet was punched according to a 25 mm diameter parallel plate, and used as a measurement sample. The measurement sample was mounted on the chuck of the viscoelasticity measuring device ARES. Then, the temperature was raised from ⁇ 70 ° C. to 150 ° C. at a temperature rising rate of 5 ° C./min while applying strain at a cycle of 1 Hz, and the storage elastic modulus at 23 ° C. was measured.
  • the polymer (acrylic polymer) is crosslinked by the crosslinking agent by heating and drying the coated adhesive to form a crosslinked structure. Although it is guessed, it has not confirmed about the crosslinked structure.
  • the amount of MTMS (a monomer that is a constituent unit of the gel) in the raw material was about 8% by weight of the entire raw material, the gel was hydrolyzed with the monomer (MTMS) that is a constituent unit of the gel It was apparent that the content of the solvent (in this case, methanol) having a boiling point of less than 130 ° C. generated by the above was 20% by weight or less.
  • the solvent in this case, methanol
  • Form Control Step Water which is a substitution solvent, was poured on the gel synthesized in the 30 cm ⁇ 30 cm ⁇ 5 cm stainless steel container by the above-mentioned steps (1) and (2).
  • the cutting blade of a cutting jig was slowly inserted into the gel from above with respect to the gel in the stainless steel container, and the gel was cut into a rectangular solid of 1.5 cm ⁇ 2 cm ⁇ 5 cm.
  • a coating solution for forming a void layer (a gel-containing product-containing solution) of this reference example (Reference Example 1) was produced. Moreover, it was 12 nm when the peak pore diameter of the gel ground material (micropore particle
  • the acrylic pressure-sensitive adhesive composition obtained in the above (2) is treated with a silicone-treated polyethylene terephthalate (PET) film (manufactured by Mitsubishi Chemical Polyester Film, thickness: 38 ⁇ m) It applied so that the thickness of the adhesive layer after drying might be set to 12 micrometers on single side
  • the storage elastic modulus G ′ at 23 ° C. of the pressure-sensitive adhesive layer (adhesive layer) was 1.3 ⁇ 10 5 .
  • Prepolymer Composition A photopolymerization was carried out using a monomer mixture composed of 68 parts of 2-ethylhexyl acrylate, 14.5 parts of N-vinyl-2-pyrrolidone and 17.5 parts of 2-hydroxyethyl acrylate. After blending 0.035 parts of an initiator (trade name “IRGACURE 184”, BASF AG) and 0.035 parts of a photopolymerization initiator (trade name “IRGACURE 651”, BASF AG), viscosity (BH viscometer No. 5) Ultraviolet rays were irradiated until the rotor, 10 rpm, and the measurement temperature became 30 ° C.) to obtain a prepolymer composition in which a part of the above monomer components were polymerized.
  • an initiator trade name “IRGACURE 184”, BASF AG
  • IRGACURE 651 0.035 parts of a photopolymerization initiator
  • the acrylic pressure-sensitive adhesive composition obtained in the above (2) is treated with a silicone-treated polyethylene terephthalate (PET) film (manufactured by Mitsubishi Chemical Polyester Film, thickness: 50 ⁇ m) Polyethylene terephthalate (PET) film (coated by Mitsubishi Chemical Polyester Film Co., Ltd., thickness: 38 ⁇ m) coated on one side with a dried adhesive layer thickness of 25 ⁇ m and further silicone treated on the coated layer To coat the coating layer and shut off oxygen.
  • the laminate was irradiated with ultraviolet light with an illuminance of 5 mW / cm 2 for 300 seconds from the upper surface (MRF 38 side) of the laminate with a black light (manufactured by Toshiba).
  • the drying process was performed for 2 minutes with a 90 degreeC dryer, the remaining monomer was volatilized, and the adhesive layer (adhesive layer) was formed.
  • the storage elastic modulus G ′ at 23 ° C. of the pressure-sensitive adhesive layer (adhesive layer) was 1.1 ⁇ 10 5 .
  • Reference Example 7 Formation of Adhesive and Adhesion Layer
  • the adhesive and adhesion layer of the present reference was formed according to the following procedures (1) to (3).
  • Reference Example 8 Formation of Adhesive and Adhesion Layer
  • the adhesive and adhesion layer of the present reference was formed according to the following procedures (1) to (3).
  • Example 1 The high porosity layer-forming coating liquid prepared in Reference Example 1 was applied onto an acrylic substrate and dried to form a porous layer (porosity 59 volume%) having a film thickness of about 850 nm. Next, UV irradiation (300 mJ) was performed from the surface of the void layer. Thereafter, the pressure-sensitive adhesive having a thickness of 12 ⁇ m obtained in Reference Example 2 was bonded onto the surface of the void layer, and aging was performed at 60 ° C. for 20 hours to manufacture a laminate of this example.
  • the laminate of the present example manufactured as described above was placed in an oven at 85 ° C. and 85% RH, and the heating and humidifying durability test for 500 h was performed.
  • the filling degree of the void portion of the void layer after the heating / humidifying durability test was confirmed by SEM, and the percentage of remaining void was calculated. The results are shown in Table 1.
  • Example 2 A laminate of this example was manufactured in the same manner as in Example 1 except that the pressure-sensitive adhesive obtained in Reference Example 3 was used instead of the pressure-sensitive adhesive of Reference Example 2. Furthermore, in the same manner as in Example 1, a heating / humidifying durability test was conducted to calculate the residual ratio of porosity. The results are shown in Table 1.
  • Example 3 A laminate of this example was manufactured in the same manner as in Example 1, except that the pressure-sensitive adhesive obtained in Reference Example 4 was used instead of the pressure-sensitive adhesive of Reference Example 2. Furthermore, in the same manner as in Example 1, a heating / humidifying durability test was conducted to calculate the residual ratio of porosity. The results are shown in Table 1.
  • Example 4 A laminate of this example was manufactured in the same manner as in Example 1, except that the pressure-sensitive adhesive obtained in Reference Example 5 was used instead of the pressure-sensitive adhesive of Reference Example 2. Furthermore, in the same manner as in Example 1, a heating / humidifying durability test was conducted to calculate the residual ratio of porosity. The results are shown in Table 1.
  • Example 5 A laminate of this example was manufactured in the same manner as in Example 1 except that the thickness of the tacky-adhesive layer formed of the adhesive of Reference Example 2 was 5 ⁇ m. Furthermore, in the same manner as in Example 1, a heating / humidifying durability test was conducted to calculate the residual ratio of porosity. The results are shown in Table 1.
  • Example 6 A laminate of this example was manufactured in the same manner as in Example 1, except that the pressure-sensitive adhesive obtained in Reference Example 7 was used instead of the pressure-sensitive adhesive of Reference Example 2. Furthermore, in the same manner as in Example 1, a heating / humidifying durability test was conducted to calculate the residual ratio of porosity. The results are shown in Table 1.
  • Comparative Example 1 A laminate of this comparative example was manufactured in the same manner as in Example 1 except that the pressure-sensitive adhesive obtained in Reference Example 6 was used instead of the pressure-sensitive adhesive of Reference Example 2. Furthermore, in the same manner as in Example 1, a heating / humidifying durability test was conducted to calculate the residual ratio of porosity. The results are shown in Table 1.
  • Comparative Example 2 A laminate of this comparative example was manufactured in the same manner as in Example 1 except that an epoxy-based adhesive that was semi-cured by UV (ultraviolet irradiation) was used instead of the adhesive of Reference Example 2. Furthermore, in the same manner as in Example 1, a heating / humidifying durability test was conducted to calculate the residual ratio of porosity. The results are shown in Table 1.
  • Comparative Example 3 A laminate of this comparative example was manufactured in the same manner as in Example 1 except that the pressure-sensitive adhesive obtained in Reference Example 8 was used instead of the pressure-sensitive adhesive of Reference Example 2. Furthermore, in the same manner as in Example 1, a heating / humidifying durability test was conducted to calculate the residual ratio of porosity. The results are shown in Table 1.
  • the adhesive force of each of the laminates of Examples 1 to 6 and Comparative Examples 1 to 3 was measured by the above-mentioned measurement method.
  • the storage elastic modulus at 23 ° C. of the mucoadhesive layer, the gel fraction of the mucoadhesive layer, the thickness of the intermediate layer, the thickness of the mucoadhesive layer, and the weight average molecular weight of the sol of the mucoadhesive layer It measured by the above-mentioned measuring method.
  • the void location was binarized from the SEM image of the laminate after the durability test, and the void retention rate was calculated. The results are shown together in Table 1.
  • a laminate of an air gap layer and an adhesive layer, in which the adhesion or adhesion and the difficulty of infiltration of the adhesive or the adhesive into the air gap are compatible, optical A member and an optical device can be provided.
  • the application of the present invention is not particularly limited.
  • the optical device of the present invention is not particularly limited, and examples include an image display device, a lighting device, and the like.
  • the image display device include a liquid crystal display, an organic EL display, and a micro LED display.
  • organic EL illumination etc. are mentioned, for example.
  • the application of the laminate of the present invention is not limited to the optical member and the optical device of the present invention and is optional, and can be used in a wide range of applications.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Laminated Bodies (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

La présente invention concerne un stratifié d'une couche poreuse et d'une couche adhésive, le stratifié ayant à la fois une adhésivité sensible à la pression ou une capacité d'adhésion et il est difficile pour un agent adhésif sensible à la pression ou un agent adhésif de s'infiltrer dans ses pores. Afin d'atteindre le but ci-dessus, un premier stratifié de la présente invention est caractérisé en ce qu'il comprend une couche poreuse (20) et une couche adhésive (30), la couche adhésive (30) étant directement stratifiée sur une surface ou les deux surfaces de la couche poreuse (20) ; la porosité de la couche poreuse (20) est d'au moins 35 % en volume ; et la porosité résiduelle de la couche poreuse (20) après réalisation d'un chauffage et d'un test de durabilité à l'humidification dans lequel la couche poreuse (20) est maintenue durant 500 h à une température de 85 °C et une humidité relative de 85 % est d'au moins 50 % en volume de la porosité de la couche poreuse (20) avant le chauffage et le test de durabilité à l'humidification.
PCT/JP2018/036343 2017-09-29 2018-09-28 Stratifié, élément optique et dispositif optique WO2019065999A1 (fr)

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CN201880063213.5A CN111183031B (zh) 2017-09-29 2018-09-28 层叠体、光学构件及光学装置
KR1020237021920A KR20230100756A (ko) 2017-09-29 2018-09-28 적층체, 광학 부재 및 광학 장치
KR1020207009806A KR102550881B1 (ko) 2017-09-29 2018-09-28 적층체, 광학 부재 및 광학 장치
EP18860750.1A EP3686006A4 (fr) 2017-09-29 2018-09-28 Stratifié, élément optique et dispositif optique
US16/832,563 US11420413B2 (en) 2017-09-29 2020-03-27 Laminate, optical member, and optical apparatus

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WO2022163655A1 (fr) * 2021-01-27 2022-08-04 日東電工株式会社 Couche d'entrefer, corps multicouche, procédé de production d'une couche d'entrefer, élément optique et dispositif optique
WO2022209105A1 (fr) 2021-03-30 2022-10-06 日東電工株式会社 Corps stratifié optique, procédé de fabrication de corps stratifié optique, élément optique, dispositif optique, procédé de fabrication d'élément optique et procédé de fabrication de dispositif optique
WO2022209104A1 (fr) 2021-03-30 2022-10-06 日東電工株式会社 Stratifié optique, procédé de production de stratifié optique, élément optique, dispositif optique, procédé de production d'élément optique et procédé de production de dispositif optique
WO2023053913A1 (fr) * 2021-09-30 2023-04-06 日東電工株式会社 Stratifié, élément optique ainsi que dispositif optique, et procédés de fabrication de ceux-ci
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WO2023053913A1 (fr) * 2021-09-30 2023-04-06 日東電工株式会社 Stratifié, élément optique ainsi que dispositif optique, et procédés de fabrication de ceux-ci
WO2023053912A1 (fr) 2021-09-30 2023-04-06 日東電工株式会社 Stratifié, élément optique, et dispositif optique

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