WO2005053954A1 - ガスバリア性積層体および包装体ならびにガスバリア性積層体の製造方法 - Google Patents
ガスバリア性積層体および包装体ならびにガスバリア性積層体の製造方法 Download PDFInfo
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- WO2005053954A1 WO2005053954A1 PCT/JP2004/017874 JP2004017874W WO2005053954A1 WO 2005053954 A1 WO2005053954 A1 WO 2005053954A1 JP 2004017874 W JP2004017874 W JP 2004017874W WO 2005053954 A1 WO2005053954 A1 WO 2005053954A1
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- laminate
- compound
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- gas barrier
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or 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 of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1334—Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1334—Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]
- Y10T428/1341—Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31652—Of asbestos
- Y10T428/31663—As siloxane, silicone or silane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31971—Of carbohydrate
- Y10T428/31993—Of paper
Definitions
- Gas barrier laminate and package and method for producing gas barrier laminate
- the present invention relates to a gasoline laminate and a package, and a method for producing the gasoline laminate.
- Gas barrier properties are often required for packaging materials for packaging foods and various articles. This is for the purpose of preventing the effects such as deterioration of the package contents due to oxygen or the like. Particularly in food packaging, there is a problem that the presence of oxygen causes microorganisms to grow and the contents to decay. For this reason, in the conventional packaging material, a gas noria layer for preventing the permeation of oxygen is provided to prevent permeation of oxygen and the like.
- a metal foil-deposited layer of a metal or a metal compound can be used.
- an aluminum foil, an aluminum-deposited layer, and an oxidized silicon-deposited layer are generally used.
- a metal layer such as an aluminum foil or an aluminum vapor-deposited layer has drawbacks such as invisible packaging contents and poor disposability.
- metal compound layers such as a silicon oxide vapor deposition layer and an aluminum oxide vapor deposition layer have the drawback that the gas barrier properties are significantly reduced due to deformation or dropping of the packaging material, impact during transportation, and the like.
- the gas barrier layer a layer made of a vinyl alcohol-based polymer having excellent gas barrier properties, such as a polybutyl alcohol and an ethylene butyl alcohol copolymer, may be used.
- a vinyl alcohol-based polymer having excellent gas barrier properties such as a polybutyl alcohol and an ethylene butyl alcohol copolymer.
- the above-mentioned vinyl alcohol-based polymer is crystallized by a hydrogen bond between hydroxyl groups in the molecule, and exhibits gas nori properties. For this reason, the conventional vinyl alcohol-based polymer shows a high gas barrier property in a dry state, but has a tendency to loose hydrogen bonds and deteriorate in a gas barrier property in a state of absorbing moisture due to water vapor or the like. Therefore, -It is difficult for vinyl alcohol polymers such as alcohol to exhibit high gas barrier properties under high humidity.
- the present invention expresses a high oxygen barrier property without depending on humidity, expresses high oxygen noria even after retort treatment, and exhibits strength and transparency.
- Another object of the present invention is to provide an excellent gas-nolia laminate.
- Another object of the present invention is to provide a method for industrially advantageously producing such a gas-no-laminated laminate.
- a laminate having, as a gas barrier layer, a layer made of a composition containing a hydrolysis condensate of a metal alkoxide and a polymer containing at least one functional group selected from a carboxyl group and a carboxylic anhydride group was immersed in a solution containing divalent or higher-valent metal ions to neutralize the above-mentioned functional groups in the polymer, and it was found that the properties of the composition layer were dramatically improved. As a result of further study, the present invention was completed.
- the gas nolia laminate of the present invention is a gas nolia laminate including a base material and a layer stacked on at least one surface of the base material, wherein the layer includes a halogen atom and And a hydrolysis condensate of at least one compound (L) containing a metal atom to which at least one characteristic group selected from the group consisting of a carboxyl group and a carboxylic anhydride group is selected. And a neutralized product of a polymer having one functional group, wherein at least a part of the COO— group contained in the at least one functional group is neutralized with a divalent or higher valent metal ion. It is characterized by that.
- the package of the present invention is a package using the gas nolia laminate of the present invention.
- the method of the present invention for producing a gas-no-laminated laminate is characterized in that at least one compound (L) containing a metal atom to which at least one characteristic group selected from a halogen atom and an alkoxy group is bonded is used.
- a gas-nolia property that exhibits high oxygen barrier properties independent of humidity, exhibits high oxygen retentivity even after retort treatment, expresses oxygen noria properties, and has excellent strength and transparency.
- a laminate is obtained.
- the oxygen permeation rate in an atmosphere of 20 ° C. and 85% RH can be set to 1.Ocm 3 Zm 2 'dayatm or less.
- This gas-no-laminated laminate can be industrially easily produced by the production method of the present invention.
- This gas barrier laminate is effectively used as a packaging material for foods, medicines, medical equipment, machine parts, clothing, etc., and is especially suitable for food packaging applications that require gas barrier properties under high humidity conditions. Used particularly effectively.
- Gas noori layer is composed of at least one compound (L) containing a metal atom to which at least one characteristic group (atomic group) selected from a halogen atom and an alkoxy group is bonded.
- the composition comprises a hydrolyzed condensate and a neutralized polymer of a polymer containing at least one functional group selected from the group consisting of a carboxyl group and a carboxylic acid anhydride group. Then, at least a part of the COO— group contained in the at least one functional group is neutralized with a divalent or higher valent metal ion. In other words, at least a part of the at least one functional group forms a salt with a divalent or higher valent metal ion.
- the compound (L) at least one of the compounds (A) and Z or the compound (B) described below can be applied.
- the compound (A) and the compound (B) will be described.
- the compound (A) is at least one compound represented by the following formula (I).
- M 1 is Si ⁇ Al, Ti, Zr, Cu, Ca, Sr, Ba, Zn, B, Ga, Y, Ge, Pb, P, Sb, V, Ta, W , La and Nd. M 1 is preferably Si, ⁇ 1, ⁇ or Zr, particularly preferably Si.
- R 1 is an alkyl group such as a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, a t-butyl group, and is preferably a methyl group or an ethyl group.
- X 1 represents a halogen atom.
- halogen atom represented by X 1 examples include a chlorine atom, a bromine atom, and an iodine atom, and a chlorine atom is preferable.
- Z 1 represents an alkyl group substituted with a functional group having reactivity with a hydroxyl group.
- the functional group having reactivity with the hydroxyl group include an epoxy group, an amino group, a hydroxyl group, a halogen atom, a mercapto group, an isocyanate group, an ureido group, an oxazoline group, and a carbodiimide group.
- a group, an amino group, an isocyanate group, a ureide group or a halogen atom is preferably at least one selected from, for example, an epoxy group, an amino group and an isocyanate group.
- Examples of the alkyl group substituted with such a functional group include those described above.
- m is equal to the valence of the metal element M 1.
- n represents an integer of 0— (m ⁇ 1).
- k represents an integer of 0— (m ⁇ 1), and l ⁇ n + k ⁇ (m ⁇ 1).
- Specific examples of the compound (A) include ⁇ -glycidoxypropyltrimethoxysilane, ⁇ -alidicoxypropyltriethoxysilane, ⁇ -glycidoxypropyltrichlorosilane, and ⁇ -aminopropyltrimethoxysilane. , .gamma. ⁇ amino propyl triethoxy silane, .gamma. Aminopuropiru trichlorosilane, y black port trimethoxysilane, I black port triethoxy silane-, gamma black port prop Honoré trichlorosilane, gamma-bromopropyl trimethoxy silane, .gamma.
- Menorekaputopu port pills trimethoxysilane, gamma-mercaptopropyl triethoxysilane, gamma Merukaputopuro pills trichlorosilane, gamma iso Xia sulfonates trimethoxysilane, gamma Soshianeto propyltriethoxysilane, Y iso Xia sulphonate propyl trichlorosilane, .gamma.
- Ureidopu port pills trimethoxysilane, .gamma.-ureidopropyltriethoxysilane, .gamma. c etc. laid prop Honoré trichlorosilane and the like.
- the compound ( ⁇ ) is y-glycidoxypropyltrimethoxysilane, ⁇ -glycidoxypropyltriethoxysilane, ⁇ -clopropyl propyltrimethoxysilane, ⁇ -clopropyl propyltriethoxysilane, ⁇ -a Minopropyltrimethoxysilane, y-aminopropyltriethoxysilane.
- the compound is at least one compound represented by the following chemical formula (II).
- ⁇ 2 is Si ⁇ Al, Ti, Zr, Cu, Ca, Sr, Ba, Zn, B, Ga, Y, Ge, Pb, P, Sb, V, Ta, W , La, and a force representing an atom selected from Nd, preferably Si, Al, T, or Zr, particularly preferably Si, A, or Ti.
- R 2 represents an alkyl group such as a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, a t-butyl group, and is preferably a methyl group or an ethyl group. is there.
- X 2 represents a halogen atom.
- the halogen atom represented by X 2 include a chlorine atom, a bromine atom and an iodine atom, and a chlorine atom is preferable.
- R 3 represents an alkyl group, an aralkyl group, an aryl group or an alkenyl group.
- Examples of the aralkyl group represented by R 3 include a benzyl group, a phenethyl group, and a trityl group.
- Examples of the aryl group represented by R 3 include a fluor group, a naphthyl group, a tolyl group, a xylyl group, and a mesityl group. No. Examples of the aryl group represented by R 3 include a butyl group and an aryl group.
- p is equal to the valence of the metal element M 2.
- q represents an integer of 0 to p.
- r represents an integer of 0-p, and l ⁇ q + r ⁇ p
- M 1 and M 2 may be the same or different. Further, R 1 and R 2 may be the same or different.
- Specific examples of the compound (B) include tetramethoxysilane, tetraethoxysilane, methyltrimethoxysilane, ethyltrimethoxysilane, octyltrimethoxysilane, phenyltrimethoxysilane, vinyltrimethoxysilane, and vinyltrimethoxysilane.
- Silicon alkoxides such as ethoxy silane, chlorotrimethoxy silane, chlorotriethoxy silane, dichlorodimethoxy silane, dichloro ethoxy silane, trichloro methoxy silane, and trichloro ethoxy silane; halogens such as vinyl trichlorosilane, tetrachlorosilane, and tetrabromosilane Silane; alkoxymethoxy compounds such as tetramethoxytitanium, tetraethoxytitanium, tetraisopropoxytitanium, and methyltriisopropoxytitanium; halogenation such as titanium tetrachloride Alkoxy aluminum compounds such as trimethoxyaluminum, triethoxyaluminum, triisopropoxyaluminum, methyldiisopropoxyaluminum, tributoxyaluminum, diethoxyaluminum chlor
- the composition constituting the gas barrier layer of the gas barrier laminate of the present invention contains a hydrolyzed condensate of the compound (L).
- the compound (L) is hydrolyzed, at least a part of the halogen and alkoxy groups of the compound (L) is substituted with a hydroxyl group.
- condensation of the hydrolyzate a compound in which a metal element is bonded via oxygen is formed.
- a compound which can be substantially regarded as a metal oxide is obtained.
- the hydrolysis-condensation product of compound (L) contained in the gas nolia layer preferably has a degree of condensation P defined below of 65-99%, more preferably 70-99%. More preferably, it is 75-99%.
- the degree of condensation P (%) in the hydrolysis condensate of the compound (L) is calculated as follows.
- a be the total number of alkoxy groups and halogen atoms in one molecule of the compound (L), and in the hydrolysis condensate of the compound (L), the sum of the condensed alkoxy groups and halogen atoms be i (number)
- i is an integer of 1 to 1a (including 1 and a)
- yi The value of yi described above can be measured by, for example, solid NMR (DDZMAS method) for the hydrolyzed condensate of compound (L) in the gas barrier layer.
- the hydrolyzed condensate includes the compound (L), the compound (L) partially hydrolyzed, the compound (L) completely hydrolyzed, and the compound (L) partially hydrolyzed.
- Hydrolysis and condensation, compound (L) is completely hydrolyzed and partially condensed, or a combination thereof can be used as a raw material, for example, by a method used in a known sol-gel method. .
- These raw materials may be produced by a known method, or commercially available ones may be used.
- a condensate obtained by hydrolyzing and condensing about 2 to 10 molecules can be used as a raw material.
- a product obtained by hydrolyzing and condensing tetramethoxysilane to obtain a linear condensate of 2-10 mer can be used as a raw material.
- the number of molecules condensed in the hydrolytic condensate of compound (L) in the composition constituting the gas barrier layer depends on the amount of water, the type and concentration of the catalyst, It can be controlled by the temperature at which the decomposition and condensation are performed.
- the method for producing the hydrolyzed condensate of compound (L) is not particularly limited!
- hydrolysis and condensation are performed by adding water, acid and alcohol to the above-mentioned raw materials.
- compound (L) may be described as a metal alkoxide (a compound containing a metal to which an alkoxy group is bonded).
- a compound containing a metal to which a halogen is bonded is used instead of metal alkoxide.
- the compound (L) can be at least one of the compounds (A) and Z or the compound (B) as described above.
- the case where the compound (L) contains only the compound (A) or both the compound (A) and the compound (B) is preferable because the gas nolia property of the gas nolia laminated body becomes good.
- the compound (L) substantially becomes the power of both the compound (A) and the compound (B), and the molar ratio of the compound (A) to the compound (B) is 0.5 / 99.5-5-40Z60. More preferably, it is within the range.
- the gas barrier laminate has excellent gas barrier properties, mechanical properties such as tensile elongation, appearance, and handling properties.
- the molar ratio of the compound (A) to the Z compound (B) is more preferably in the range of 3Z97-40Z60, and even more preferably in the range of 4Z96-30Z70.
- an organic group having at least one characteristic group selected from a halogen atom, a mercapto group and a hydroxyl group may be further bonded to the metal atom of compound (L).
- the compound (L) to which such an organic group is bonded may be referred to as a compound (L '). According to this configuration, a laminate having a particularly good surface appearance can be obtained.
- the metal atom of the compound (L ′) for example, silicon, tin, and titanium can be used. Although a silicon atom may be classified as a nonmetallic element, it is treated as a metal element in this specification. Among them, a silicon atom is preferable because a stable product with a controlled reaction can be obtained and the product is easily available. An organic group having at least one characteristic group selected from a halogen atom, a mercapto group and a hydroxyl group, and at least one characteristic group selected from a halogen atom and an alkoxy group are bonded to the silicon atom. Other substituents may be bound to the silicon atom as long as the effects of the present invention can be obtained.
- substituents include a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, an aralkyl group and an amino group.
- Compound containing a silicon atom L '
- the compound (L ′) may include at least one compound ( ⁇ ′) represented by the following chemical formula ().
- R 1 and R 4 each independently represent an alkyl group.
- X 1 represents halogen.
- Z 2 represents an organic group having at least one characteristic group selected from a halogen atom, a mercapto group and a hydroxyl group.
- s represents an integer of 0-3.
- t represents an integer of 0-2.
- u represents an integer of 0 to 3.
- R 1 and R 4 are each independently an alkyl group such as a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, a t-butyl group, and preferably a methyl group or an ethyl group .
- the Nono androgenic X 1 represents, for example, chlorine, bromine and iodine, preferably chlorine.
- the organic group Z 2 is a hydrocarbon group substituted with at least one characteristic group selected from a halogen atom, a mercapto group, an isocyanate group, an ureide group, and a hydroxyl group (for example, having about 115 carbon atoms). ).
- Such organic groups include, for example, chloromethyl, chloroethyl, chloropropyl, chloroethylmethyl, or chloro, bromo, iodine, fluorine, mercapto, or hydroxyl groups.
- the organic group changed to is mentioned.
- the organic group Z 2 may be an organic group having at least one characteristic group selected from a halogen atom, a mercapto group and a hydroxyl group, and an amide structure.
- Specific examples of the compound ( ⁇ ') in which t is 1 or 2 in the formula ( ⁇ ) include, for example, chloromethylmethyldimethoxysilane, chloromethyldimethylmethoxysilane, 2-chloroethylmethyldimethoxysilane, 2 Chloroethyl dimethylmethoxysilane, 3 Clopropyl propylmethyldimethoxysilane, 3 Clopropyl propyldimethylmethoxysilane, Mercaptomethylmethyldimethoxysilane, Mercaptomethyldimethylmethoxysilane, 2-Mercaptoethylmethyl dimethoxysilane, 2 Mercaptoethyl Dimethylmethoxysilane, 3 mercaptopropylmeth Examples include tildimethoxysilane, 3-mercaptopropyldimethylmethoxysilane, and bis (chloromethyl) methylchlorosilane.
- a conjugated compound in which an alkoxy group or a chlorine group such as an ethoxy group, an n-propoxy group, an iso-propoxy group, an n-butoxy group or a t-butoxy group is used as the methoxy group in these compounds may be used.
- the compound ( ⁇ ′) in which t is 0 in the formula ( ⁇ ) include, for example, chloromethyltrimethoxysilane, 2chloroethyltrimethoxysilane, 3chloropropyltrimethoxysilantyltrimethoxysilane, 6-chlorohexyltrimethoxysilane, (dichloromethyl) dimethoxytrichloromethyl) methoxysilane, (trichloroethyl) methoxysilane, (trichloropropyl) methoxysilane, mercaptomethyltrimethoxysilane, 2-mercaptoethyl Limethoxysilane, 3 Mercaptopropyltrimethoxysilane, 2 Mercaptopropyltrimethoxysilane, 4 Mercaptobutyltrimethoxysilane, 5-Mercaptopentyltrimethoxysilane, 6 Mercaptohexyltrimethoxysilane,
- the compound (L,) is chloromethyltrimethoxysilane, chloromethyltriethoxysilane, chloromethyltrichlorosilane, 2-chloroethyltrimethoxysilane, 2-chloroethyltriethoxysilane, 2-chloroethylethoxysilane, Lichlorosilane, 3-chloropropyltrimethoxysilane, 3-chloropropyltriethoxysilane, 3-chloropropyltrichlorosilane, mercaptomethyltrimethoxysilane, mercaptomethyltriethoxysilane, mercaptomethyltrichlorosilane, 2mercaptoethyltri Methoxysilane, 2-mercaptoethyltriethoxysilane, 2-mercaptoethyltrichlorosilane, 3-mercaptopropyltrimethoxysilane, 3-mercaptopropyltriethoxysi
- the compounds (L,) are chloromethyl trialkoxysilane, chloromethyltrichlorosilane, 2-chloroethyltrialkoxysilane, 2-chloroethyltrichlorosilane, 3-chloropropyltrialkoxysilane.
- Particularly preferred compounds (L ′) include chloromethyltrimethoxysilane, chloromethyltriethoxysilane, 3-chloropropyltrimethoxysilane, 3-chloropropyltriethoxysilane, mercaptomethyltrimethoxysilane, and mercaptomethyltrimethoxysilane. Examples include methyltriethoxysilane, 3-mercaptopropyltrimethoxysilane, and 3-mercaptopropyltriethoxysilane.
- the oxygen permeation rate in an atmosphere of 20 ° C. and 85% RH can be set to 1.0 Ocm 3 / m 2 'day'atm or less.
- the haze value can be set to 3% or less.
- the compound (L) may further include at least one compound ( ⁇ ) represented by the above-mentioned chemical formula (II) in addition to the compound ( ⁇ ').
- R 1 and R 2 may be the same or different.
- the compound (L) includes the compound ( ⁇ ') and the compound ( ⁇ )
- the mono ktt of the compound ( ⁇ ') ⁇ the compound ( ⁇ ) is 0.1 / 99.9 to 40/60. It is preferable that the force be in the range S, and more preferably in the range of 0.5 / 99.5-5-3 0/70, most preferably in the range of 1Z99-20Z80 (eg 5 / 95-20 / 80) Like,.
- the compound ( ⁇ ') and the compound ( ⁇ ) in this ratio in combination it is possible to obtain a gas nolia laminate having excellent properties such as mechanical properties such as gas barrier properties and tensile strength and elongation, appearance, and handleability. .
- the composition constituting the gas nolia layer contains a neutralized polymer of a polymer containing at least one functional group selected from a carboxyl group and a carboxylic anhydride group.
- the content of the neutralized polymer in the composition is not particularly limited, for example, from 25% by weight to 95% by weight. % Range.
- the neutralized product of this polymer is different from a polymer containing at least one functional group selected from the group consisting of a carboxyl group and a carboxylic anhydride group (hereinafter sometimes referred to as a “carboxylic acid-containing polymer”).
- the carboxylic acid-containing polymer has two or more carboxyl groups or one or more carboxylic anhydride groups in one molecule of the polymer.
- a polymer containing two or more structural units having one or more carboxyl groups, such as acrylic acid units, methacrylic acid units, maleic acid units, and itaconic acid units, in one molecule of a polymer should be used.
- a polymer containing a structural unit having a carboxylic anhydride structure such as a maleic anhydride unit or a phthalic anhydride unit can also be used.
- Structural units having at least one carboxyl group and structural units having the structure of Z or carboxylic anhydride hereinafter, both may be abbreviated as carboxylic acid-containing unit (C) at least) Or two or more types may be included.
- the content of the carboxylic acid-containing unit (C) is set to all the structural units of the carboxylic acid-containing polymer to be 10 mol% or more, the gas barrier having good gas nori properties under high humidity can be obtained.
- the resulting laminate is obtained.
- This content is particularly preferably at least 40 mol%, more preferably at least 20 mol%, and even more preferably at least 70 mol%.
- the carboxylic acid-containing polymer contains both a structural unit having at least one carboxyl group and a structural unit having a carboxylic acid anhydride structure, if the total of both is within the above range, Good.
- the carboxylic acid-containing polymer may contain! /, Or other structural units other than the carboxylic acid-containing unit (C) are not particularly limited, but may be methyl acrylate units, methyl methacrylate units, Structural units derived from (meth) acrylic esters such as ethyl acrylate units, ethyl methacrylate units, butyl acrylate units, and butyl methacrylate units; and vinyl ester units such as vinyl formate units and butyl acetate units.
- the carboxylic acid-containing polymer may be in the form of an alternating copolymer, a random copolymer, a block copolymer, or a tapered copolymer.
- Preferred carboxylic acid-containing polymers U include, for example, polyacrylic acid, polymethacrylic acid, and polyacrylic acid.
- the carboxylic acid-containing polymer may be one kind or a mixture of two or more kinds of polymers.
- at least one kind of polymer selected from polyatacrylic acid and polymethacrylic acid may be used.
- Specific examples of the case where the above-mentioned other structural unit is contained include ethylene-maleic anhydride copolymer, styrene-maleic anhydride copolymer, isobutylene-maleic anhydride alternating copolymer, ethylene-acrylic acid copolymer And ethylene-ethyl acrylate copolymer.
- the molecular weight of the carboxylic acid-containing polymer is not particularly limited, but the number average molecular weight is 5 because of the excellent gas barrier properties of the obtained gas-barrier laminate and the excellent mechanical properties such as drop impact strength. , More preferably 10,000 or more, more preferably 10,000 or more, and even more preferably 20,000 or more.
- the upper limit of the molecular weight of the carboxylic acid-containing polymer is not particularly limited, but is generally 1,500,000 or less.
- the molecular weight distribution of the carboxylic acid-containing polymer is not particularly limited! /, But the surface appearance such as the haze of the gas-noria laminate and the storage stability of the solution (S) described later From the viewpoint of improving the properties and the like, the molecular weight distribution represented by the ratio of the weight average molecular weight Z number average molecular weight of the carboxylic acid-containing polymer is preferably in the range of 116, and more preferably in the range of 115. More preferably, it is more preferably in the range of 114.
- the polymer constituting the gas barrier layer of the gas barrier laminate of the present invention comprises at least one functional group selected from the group consisting of a carboxylic acid-containing polymer and a carboxylic acid anhydride (hereinafter referred to as a functional group (F)). At least partially neutralized with divalent or higher-valent metal ions.
- the polymer contains a carboxyl group neutralized with a divalent or higher valent metal ion.
- the polymer constituting the gas barrier layer is neutralized with, for example, 10 mol% or more (for example, 15 mol% or more) 1S divalent or more metal ion of the COO- group contained in the functional group (F).
- the carboxylic anhydride group is considered to contain two COO- groups. That is, when there are a-mol carboxyl group and b-mol carboxylic anhydride group, the total amount of —COO— groups contained therein is (a + 2b) mol.
- the proportion of the COO— groups contained in the functional group (F) neutralized by divalent or higher valent metal ions is preferably 20 mol% or more, more preferably 30 mol% or more, and further preferably Is at least 40 mol%, particularly preferably at least 50 mol% (for example, at least 60 mol%).
- the upper limit of the proportion of the COO— groups contained in the functional group (F) neutralized by divalent or higher valent metal ions is not particularly limited, but may be, for example, 95 mol% or less.
- the gaseous laminate of the present invention can be used under dry and high humidity In both cases, it shows good gas noria.
- the degree of neutralization (degree of ionization) of the functional group (F) is determined by measuring the infrared absorption spectrum of the gas barrier laminate by the ATR (total reflection measurement) method, or by measuring the force of the gas nori laminate. It can be determined by squeezing the gas noria layer and measuring its infrared absorption spectrum by the KBr method.
- the calibration curve can be created by measuring infrared absorption spectra of a plurality of standard samples having different degrees of neutralization.
- the metal ion that neutralizes the functional group (F) is divalent or higher. If the functional group (F) is not neutralized or is neutralized only by a monovalent ion described later, a laminate having good gas noria property cannot be obtained. However, if the functional group (F) is neutralized by a small amount of monovalent ions (cations) in addition to divalent or higher metal ions, the haze of the gas barrier laminate is reduced and The appearance becomes good. As described above, the present invention provides a method in which the functional group (F) of the carboxylic acid-containing polymer has both a divalent or higher valent metal ion and a monovalent ion. Includes neutralization.
- divalent or higher valent metal ion examples include calcium ion, magnesium ion, divalent iron ion, trivalent iron ion, zinc ion, divalent copper ion, lead ion, divalent mercury ion, and norium ion. , Nickel ions, zirconium ions, aluminum ions, titanium ions and the like.
- metal ion having two or more valences at least one ion selected from a canoleum ion, a magnesium ion, a norium ion, and a dumbbell ion may be used.
- 0.1 to 10 mol% of the —COO— group contained in the functional group (F) (carboxyl group and Z or carboxylic anhydride) of the carboxylic acid-containing polymer is It is preferably neutralized with monovalent ions.
- the degree of neutralization of the functional group (F) by monovalent ions is further to be in the range of 0.5 5 5 mol 0/0 is more ranges of preferred instrument 0. 7-3 mole 0/0 preferable.
- the monovalent ion include an ammonium ion, a pyridinium ion, a sodium ion, a potassium ion, and a lithium ion, and an ammonium ion is preferable.
- the content of the inorganic component in the composition constituting the gas barrier layer is in the range of 5 to 50% by weight from the viewpoint of improving the gas nori property of the gas nori-laminated product. This content is more preferably in the range of 10-45% by weight, still more preferably 15-40% by weight, even more preferably 25-40% by weight.
- the content of the inorganic component in the composition can be calculated from the weight of the raw materials used in preparing the composition.
- a compound represented by M'O Z 1 is obtained. Part of this compound is a metal
- the weight of the metal oxide is converted from the volatile components such as the solvent and the compound generated in the process of converting the above-mentioned compound (L) into the metal oxide from all the components obtained by the first step.
- the value obtained by dividing the value divided by the weight of the removed component by 100 is the inorganic component content (%).
- composition constituting the gas barrier layer may be, if desired, carbonate, hydrochloride, nitrate, hydrogencarbonate, sulfate, hydrogensulfate, phosphate within a range not to impair the effects of the present invention.
- Inorganic acid metal salts such as oxalate, borate, aluminate; organic acid metal salts such as oxalate, acetate, tartrate, stearate; acetylacetonate such as aluminum acetylacetonate
- Metal complexes metal complexes such as cyclopentagel metal complexes such as titanocene, and cyano metal complexes
- layered clay compounds crosslinking agents, polyalcohols or other high molecular compounds, plasticizers, antioxidants, and ultraviolet absorption Agents, flame retardants and the like.
- composition constituting the gaseous layer is a fine powder of a metal oxide produced by hydrolyzing and condensing the above metal alkoxide in a wet manner; a metal oxide prepared by hydrolyzing, condensing or burning the metal alkoxide in a dry manner.
- Fine powder of the substance silica fine powder prepared from water glass capillaries;
- the surface appearance of the gas-noria laminate is improved. More specifically, by containing a polyalcohol, cracks are less likely to occur in the gas noria layer during the production of the gas barrier laminate, and a gas noria laminate having a good surface appearance can be obtained.
- Such polyalcohols used in the present invention are compounds having at least two or more hydroxyl groups in the molecule, and include compounds ranging from low molecular weight compounds to high molecular weight compounds.
- polybutyl alcohol partially saponified polyacetate butyl
- ethylene High molecular weight conjugates such as polybutyl alcohol copolymer, polyethylene glycol, polyhydroxyethyl (meth) acrylate, polysaccharides such as starch, polysaccharides such as starch, and polysaccharide derivatives derived therefrom.
- the amount of the above-mentioned polyalcohols used is preferably such that the weight ratio of the carboxylic acid-containing polymer Z polyalcohols is in the range of 10Z90-99.5 / 0.5.
- the weight ratio is more preferably in the range of 30Z70-99Zl, even more preferably 50Z50-99Zl, most preferably 70Z30-98Z2.
- At least one surface of the substrate has the compound described above.
- a gas noria layer made of a composition containing the hydrolyzed condensate of (L) and a neutralized product of the carboxyl group-containing polymer is formed.
- the gas noria layer may be formed on only one surface of the base material, or may be formed on both surfaces.
- the laminate in which the gas noria layer is formed on both surfaces of the base material has the advantage that post-processing such as bonding another film is performed.
- the thickness of the gas noria layer is not particularly limited, but is preferably in the range of 0.1 m to 100 ⁇ m. If the thickness is less than 0.1 m, the gas barrier properties of the gas barrier laminate may be insufficient. On the other hand, when the thickness is more than 100 / zm, cracks may be easily formed in the gas noria layer during application, transportation, and use of the gas noria laminate.
- the thickness of the gas barrier layer is more preferably in the range of 0.1 to 50 / zm, and even more preferably in the range of 0.1 / ⁇ -20 / ⁇ .
- the base material constituting the gas-noorous laminate of the present invention base materials made of various materials can be used.
- films having a predetermined shape such as thermoplastic resin films or thermosetting resin films; fabrics, fiber aggregates such as papers; wood; metal oxides and metals can be used.
- a thermoplastic resin film is particularly useful as a base material of a gas-noble laminate used for a food packaging material.
- the base material may include a paper layer. By using a substrate containing a paper layer, a laminate for a paper container can be obtained.
- the base material may be of a multi-layer structure having a plurality of material strengths.
- the thermoplastic resin film includes, for example, a polyolefin resin such as polyethylene or polypropylene; polyethylene terephthalate, polyethylene 2,6 naphthalate, Polyester resins such as butylene terephthalate and their copolymers; Polyamide resins such as nylon 6, nylon 66, and nylon 12; polystyrene, poly (meth) acrylate, polyacrylonitrile, polyacetate vinyl, and polycarbonate And polyarylate, regenerated cellulose, polyimide, polyetherimide, polysulfone, polyethersulfone, polyetheretherketone, ionomer resin, and the like.
- a film made of polyethylene, polypropylene, polyethylene terephthalate, nylon 6, or nylon 66 is preferable.
- the laminate of the present invention may further include an adhesive layer (T) arranged between the base material and the gas barrier layer.
- the adhesive layer (T) made of an adhesive resin can be formed by treating the surface of the substrate with a known anchor coating agent or applying a known adhesive to the surface of the substrate.
- adhesive resins containing urethane bonds and having nitrogen atoms (nitrogen atoms of urethane bonds) in the entire resin in a range of 0.5 to 12% by weight were obtained. It has been found favorable.
- an adhesive resin By using such an adhesive resin, it is possible to particularly enhance the adhesiveness between the base material and the gas noria layer.
- the gas nori property is improved when the gas nori laminate of the present invention is subjected to processing such as printing and lamination. The appearance can be prevented from being bad.
- the content of nitrogen atoms (nitrogen atoms of urethane bonds) contained in the adhesive resin is more preferably in the range of 2 to 11% by weight, and still more preferably in the range of 3 to 8% by weight.
- the adhesive resin containing a urethane bond a two-component reaction type polyurethane-based adhesive in which a polyisocyanate component and a polyol component are mixed and reacted is preferable.
- polyisocyanate component a polyisocyanate component usually used in the production of polyurethane is used, and for example, a polyisocyanate monomer and a derivative thereof are used.
- polyisocyanate monomer an aliphatic diisocyanate such as hexamethylene diisocyanate may be used. Also, 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate, dicyclohexylmethane-4,4, -diisocyanate, 1,3- Alternatively, an alicyclic diisocyanate such as 1,4 bis (isocyanatomethyl) cyclohexane or a mixture thereof may be used.
- araliphatic diisocyanates such as 1,3 or 1,4 xylylene diisocyanate or a mixture thereof, 1,3 or 1,4 bis (1-isocyanato-1-methylethyl) benzene or a mixture thereof may be used.
- aromatic diisocyanates such as 2,4 or 2,6-tolylene diisocyanate or a mixture thereof, 4,4, diphenylmethane diisocyanate, p-phenylenediisocyanate and 1,5 naphthylene diisocyanate. You can also use a mouse, etc.
- a multimer of polyisocyanate such as a dimer or trimer of the above-mentioned polyisocyanate monomer may be used.
- polyurethanes such as biuret-modified, arophanate-modified, or oxaziazinetrione-modified products obtained by reacting the above-mentioned polyisocyanate monomer with water, polyol, or carbon dioxide gas, respectively.
- a modified isocyanate may be used.
- a polyol adduct, a Z or polyamine adduct obtained by reacting the above polyisocyanate monomer with a polyol and Z or a polyamine are used.
- polyisocyanate components may be used alone or in combination of two or more.
- a derivative of a polyisocyanate monomer is used.
- polyester polyol As the polyol component, a polyester polyol is preferably used. Polyester polyols contain ester units. The ester unit is a unit containing an ester bond and is formed by reacting a polybasic acid and Z or its alkyl ester with a polyol.
- the polybasic acid is not particularly limited, but is preferably an aromatic dicarboxylic acid such as orthophthalic acid, isophthalic acid, terephthalic acid, or 2,6-naphthalenedicarboxylic acid and Z or an alkyl ester thereof, glutaric acid, and succinic acid.
- aromatic dicarboxylic acid such as orthophthalic acid, isophthalic acid, terephthalic acid, or 2,6-naphthalenedicarboxylic acid and Z or an alkyl ester thereof, glutaric acid, and succinic acid.
- the alkyl ester of the polybasic acid is not particularly limited, but preferably, the alkyl ester of the polybasic acid is used.
- the polyol is preferably ethylene glycol, diethylene glycol, propylene glycol, 1,3 butanediol, 1,4 butanediol, 2-methyl-1,3propanediol, neopentyl glycol, 1,6 xanediol.
- Glycols such as 1,7-heptanediol, 1,9-nonanediol, cyclohexanedimethanol, 3-methyl-1,5-pentanediol, 3,3'-dimethylolheptane, and 2-methyl-1,8-octanediol are used.
- Triols such as glycerin and trimethylolpropane are also preferably used.
- dimethylolalkanoic acid such as dimethylolpropionic acid / dimethylolbutanoic acid is preferably used.
- the polyester polyol is not particularly limited as long as it contains the polyester unit described above.
- the polyester polyol can be synthesized by a known method. That is, the polyester polyol is obtained by reacting the polybasic acid and Z or an alkyl ester thereof with the polyol at 160 to 250 ° C. in an inert gas atmosphere.
- a polyester polyol may be used as it is.
- a polyurethane polyol may be produced by subjecting a polyester polyol to a chain extension reaction with a polyisocyanate, and this may be used as a polyol component.
- a polyester polyol having a high molecular weight may be produced by subjecting a polyester polyol to a condensation reaction, and this may be used as a polyol component.
- An adhesive having various physical properties can be obtained by subjecting the polyester polyol to a chain extension reaction or a condensation reaction to reduce the molecular weight.
- the number average molecular weight is preferably, for example, 500 or more and less than 3000.
- the two-component reactive polyurethane-based adhesive is prepared by adding an organic solvent to the polyisocyanate component and the polyol component so that the solid content concentration is in the range of 0.5 to 50% by weight. It is preferably applied on a material film.
- organic solvent esters such as methyl acetate and ethyl acetate, ketones such as methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone, and aromatic hydrocarbons such as toluene and xylene are preferably used.
- esters such as methyl acetate and ethyl acetate
- ketones such as methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone
- aromatic hydrocarbons such as toluene and xylene
- the water content (weight ratio) contained in the organic solvent is preferably 3000 ppm or less, more preferably 2000 ppm or less, and 100 ppm or less.
- a closed type device that can operate external force, minimize the number of times of contact with the outside air and the contact time, and seal the opening with nitrogen!
- the adhesive layer (T) tends to be non-uniform.
- the uniformity of the adhesive layer (T) can be evaluated by the variation in the haze value of the gas-noble laminate.
- the haze value was measured by the method described in the examples, and the standard deviation was determined. When the value of three times the standard deviation was in the range of 0 to 2.0, the adhesiveness was increased. This value is more preferably in the range of 0-1.5, and even more preferably in the range of 0-1.0.
- the strength of the gas-nori-laminated product can be increased.
- the thickness of the adhesive layer (T) is preferably in the range of 0.04 / zm-0.18 / zm. According to this configuration, when processing such as printing or laminating is performed on the gas noble laminate of the present invention, it is possible to suppress deterioration of the gas nori property and appearance, and further, it is possible to further suppress the gas nori of the present invention.
- the drop strength of the packaging material using the rear laminate can be increased.
- the thickness of the adhesive layer (T) is more preferably in the range of 0.06 ⁇ m to 0.16 ⁇ m, and still more preferably in the range of 0.1 to 0.14 / zm.
- the laminate of the present invention may include a layer having an inorganic property (hereinafter, sometimes referred to as "inorganic layer") between the base material and the gas noori layer.
- the inorganic layer can be formed of an inorganic substance such as an inorganic oxide.
- the inorganic layer can be formed by a vapor deposition method such as an evaporation method.
- the inorganic substance constituting the inorganic layer has a gas barrier property against oxygen, water vapor and the like, and more preferably has transparency.
- the inorganic layer can be formed with an inorganic oxide such as aluminum oxide, silicon oxide, silicon oxynitride, magnesium oxide, tin oxide, or a mixture thereof.
- silicon oxide aluminum, silicon oxide, The magnesium oxide can be preferably used from the viewpoint of excellent barrier properties against gases such as oxygen and water vapor.
- the preferred thickness of the inorganic layer depends on the type of inorganic oxide constituting the inorganic layer, but is usually in the range of 2 nm to 500 nm. Within this range, the thickness may be selected so that the gas nolia property and mechanical properties of the gas nolia laminate are good. When the thickness of the inorganic layer is less than 2 nm, the gas barrier property against gas such as oxygen or water vapor may not exhibit sufficient gas nolia property that is not reproducible. When the thickness of the inorganic layer exceeds 500 nm, the gas nolia property tends to decrease when the gas nolia layered product is pulled or bent.
- the thickness of the inorganic layer is preferably in the range of 5-200 nm, more preferably in the range of 10-— ⁇ m.
- the inorganic layer can be formed by depositing an inorganic oxide on a substrate.
- the formation method include a vacuum evaporation method, a sputtering method, an ion plating method, and a chemical vapor deposition (CVD) method.
- the vacuum deposition method can be preferably used from the viewpoint of productivity.
- a heating method when performing vacuum deposition any of an electron beam heating method, a resistance heating method, and an induction heating method is preferable.
- vapor deposition may be performed using a plasma assist method or an ion beam assist method.
- a reactive vapor deposition method in which oxygen gas or the like is blown to cause a reaction at the time of vapor deposition may be employed.
- the microstructure of the gas barrier layer is not particularly limited. However, when the gas barrier layer has the microstructure described below, excellent gas noria properties can be obtained, and when the gas barrier layer laminate is elongated. It is preferable because the reduction of gas nolia property in is suppressed.
- the island layer (Q) is an area where the ratio of the hydrolyzed condensate of the compound (L) is higher than that of the sea layer (P).
- the sea phase (P) and the island layer (Q) each preferably further have a fine structure.
- the sea layer (P) is composed of a sea layer (P1) mainly composed of a neutralized carboxylic acid-containing polymer and an island phase (P2) mainly composed of a hydrolyzed condensate of the compound (L).
- the sea-island structure to be used may be further formed.
- the island phase (Q) is mainly composed of a sea phase (Q1) mainly composed of a neutralized carboxylic acid-containing polymer and an island phase (Q2) mainly composed of a hydrolyzed condensate of the compound (L).
- the configured sea-island structure may be further formed.
- the ratio (volume ratio) of [Island (Q2) Z sea (P1)] in the island (Q) is the ratio of [Island (P2) Z sea (P1)] in the sea (P) It is preferably larger than.
- the diameter of the island phase (Q) is preferably in the range of 30 nm to 1200 nm, more preferably in the range of 50 to 500 nm, and still more preferably in the range of 50 nm to 400 ⁇ m.
- the diameter of the island phase (P2) and the island phase (Q2) is preferably 50 nm or less, more preferably 30 nm or less, and further preferably 20 nm or less.
- the gas nori laminate of the present invention may include another layer (for example, a thermoplastic resin film or paper). By curing such other layers, it is possible to impart heat sealability to the gas-noble laminate and to improve the mechanical properties of the gas-barrier laminate.
- another layer for example, a thermoplastic resin film or paper.
- thermoplastic resin film or paper layer
- film (layer) may be omitted and only the material may be described.
- the configuration of the gas barrier laminate of the present invention includes, for example, a gas barrier layer Z polyester Z polyamide Z polyolefin, a gas noria layer Z polyester Z gas noori layer Z polyamide Z polyolefin, a polyester z gas noori layer Z polyamide Z polyolefin.
- polypropylene or polyethylene is preferred as polyolefin, and polyethylene terephthalate (PET) is preferred as polyester, and nylon 6 is preferred as polyamide.
- PET polyethylene terephthalate
- nylon 6 is preferred as polyamide.
- hydroxyl group-containing polymer an ethylene butyl alcohol copolymer is preferable.
- another layer for example, a layer made of an anchor coat layer or an adhesive may be provided between the respective layers.
- the package of the present invention uses the above-described gasoline laminate of the present invention.
- This package can be used in various applications, and is preferably used in applications that require a gas barrier such as oxygen gas.
- the package of the present invention is preferably used as a package for retort food.
- a paper container can be obtained by using a base material including a paper layer.
- the gas barrier laminate of the present invention can be easily manufactured. Since the materials used in the manufacturing method of the present invention and the configuration of the laminate are the same as those described above, the description of the overlapping portions may be omitted.
- the hydrolysis of at least one compound (L) containing a metal atom to which at least one characteristic group selected from a halogen atom and an alkoxy group is bonded is performed.
- Forming a layer comprising a composition comprising a decondensate and a polymer (carboxylic acid-containing polymer) containing at least one functional group selected from a carboxyl group and a carboxylic acid anhydride group on a substrate First step).
- the first step for example, compound (L), compound (L) partially hydrolyzed, compound (L) completely hydrolyzed, and compound (L) partially hydrolyzed and condensed And a solution (S) containing at least one metal element-containing conjugate selected from a compound (L) completely hydrolyzed and partially condensed and a carboxylic acid-containing polymer.
- the first step includes a step of forming a hydrolyzed condensate of the compound (L), a step of preparing a solution (S) containing the hydrolyzed condensate and the sulfonic acid-containing polymer, It is preferable to include a step of forming a gas nolia layer by applying S) to a substrate and drying the substrate.
- An organic group having at least one characteristic group selected from a halogen atom, a mercapto group and a hydroxyl group may be further bonded to the metal atom of compound (L). That is, the compound (L) may include the above-mentioned compound (L '). By using the compound (L '), a laminate having particularly good surface appearance can be obtained.
- the layer formed on the base material is brought into contact with a solution containing divalent or higher-valent metal ions (second step; this step may be hereinafter referred to as an ionization step).
- a solution containing divalent or higher-valent metal ions this step may be hereinafter referred to as an ionization step.
- the second step at least a part of the functional group (F) (carboxylic acid and Z or carboxylic anhydride) contained in the carboxylic acid-containing polymer in the layer is neutralized with a divalent metal ion.
- the ratio of neutralization with divalent metal ions ionization degree
- Change can be adjusted by
- a solution containing divalent or higher-valent metal ions is sprayed on the formed layer, or a solution containing divalent or higher-valent metal ions in both the base material and the layer on the base material is sprayed. It can be done by immersion in the water.
- the laminate before the ionization step may be referred to as a laminate (A) t
- the laminate after the ionization step may be referred to as a laminate (B).
- compound (L), compound (L) partially hydrolyzed, compound (L) completely hydrolyzed, compound (L) partially hydrolyzed and condensed and
- at least one metal element-containing compound selected from compounds in which the compound (L) is completely hydrolyzed and a part thereof is condensed is referred to as a “compound (L) -based component”.
- Solution (S) can be prepared using compound (L) -based component, carboxylic acid-containing polymer, and solvent. For example, (1) a method in which a compound (L) -based component is added to a solvent in which a carboxylic acid-containing polymer is dissolved, and mixed.
- the compound (A), which is the compound (L) component is added to the solvent in which the carboxylic acid-containing polymer is dissolved (2), and then the compound (L) component is added and mixed may be adopted.
- a method of mixing the solutions can also be adopted.
- the compound (L) -based component and its oligomer may be added alone to the solvent, or may be added to the solvent in the form of a solution in which they are dissolved.
- the preparation method (3) includes a step of preparing a solution by dissolving the carboxylic acid-containing polymer in a solvent (Stl), and a step of hydrolyzing and condensing the compound (L) -based component under specific conditions.
- the method includes a step (St2) of preparing an oligomer, and a step (St3) of mixing the solution obtained in the step (Stl) with the oligomer obtained in the step (St2).
- the solvent used for dissolving the carboxylic acid-containing polymer may be selected according to the type of the carboxylic acid-containing polymer.
- polyacrylic In the case of a water-soluble polymer such as acid-polymethacrylic acid, water is preferred.
- water containing ammonia and an alkaline substance such as sodium hydroxide and potassium hydroxide is preferred. .
- step (Stl) alcohols such as methanol and ethanol; ethers such as tetrahydrofuran, dioxane and trioxane; ketones such as acetone and methyl ethyl ketone, as long as they do not hinder the dissolution of the carboxylic acid-containing polymer.
- Glycols such as ethylene glycol, propylene glycol, etc .; glycol derivatives such as methyl sorb, ethyl sorb, n -butyl sorb, etc .; glycerin; acetonitrile, dimethylformamide, dimethyl sulfoxide, sulfolane, dimethoxyethane, etc. It is also possible.
- the compound (L) -based component is hydrolyzed and condensed in a reaction system containing the compound (L) -based component, an acid catalyst, water and, if necessary, an organic solvent to form an oligomer. It is preferable to obtain Specifically, a technique used in a known sol-gel method can be applied. When the compound (L) is used as the compound (L) -based component, a gaseous laminate having higher gas barrier properties can be obtained.
- the acid catalyst used in the step (St2) known acid catalysts can be used.
- hydrochloric acid, sulfuric acid, nitric acid, p-toluenesulfonic acid, benzoic acid, acetic acid, lactic acid, butyric acid, carbonic acid Oxalic acid, maleic acid and the like can be used.
- hydrochloric acid, sulfuric acid, nitric acid, acetic acid, lactic acid and butyric acid are particularly preferred.
- Preferred amount of acid catalyst may vary by connexion to the type of catalyst used, the metal atom to 1 mol of the compound (L) -based component, 1 X 10- 5 - is preferably in the range of 10 mole it is more preferably a more preferred device 5 X 10 one 1 mole of the range is 5 mols - sushi 1 X 10- 4.
- the amount of the acid catalyst used is within this range, the gas nori property is high and a gas nori laminated body is obtained.
- the preferred amount of water to be used in step (St2) varies depending on the type of the compound (L) component, but the alkoxy group or the halogen atom of the compound (L) component (when both are mixed) Is preferably the range of 0.05 to 10 moles, preferably 0.1 to 4 moles, and more preferably 0.2 to 3 moles per mole. It is even more preferable. Water usage capacity S When this range is satisfied, the resulting gaseous laminate will have The properties are particularly excellent. When a water-containing component such as hydrochloric acid is used in the step (St2), it is preferable to determine the amount of water to be used in consideration of the amount of water introduced by the component.
- a water-containing component such as hydrochloric acid
- an organic solvent may be used as necessary.
- the organic solvent used is not particularly limited as long as the compound (L) -based component can be dissolved therein.
- alcohols such as methanol, ethanol, isopropanol, and normal propanol are preferably used, and alcohols having the same molecular structure (alkoxy component) as the alkoxy group contained in the compound (L) component are more preferable. It is preferably used.
- methanol is preferred for tetramethoxysilane, and ethanol is preferred for tetraethoxysilane.
- the amount of the organic solvent used is not particularly limited, but the concentration of the compound (L) -based component is 1 to 90% by weight, preferably 10 to 80% by weight, and more preferably 10 to 60% by weight. Preferably, it is an amount.
- the temperature of the reaction system is not necessarily limited. Usually, it is in the range of 2 to 100 ° C, preferably in the range of 4 to 60 ° C, and more preferably in the range of 6 to 50 ° C.
- the reaction time varies depending on the reaction conditions such as the amount and type of the catalyst, but is usually in the range of 0.01 to 60 hours, preferably in the range of 0.1 to 12 hours, and more preferably in the range of 0.1 to 12 hours. The range is 1-6 hours.
- the atmosphere of the reaction system is not limited, and an atmosphere such as an air atmosphere, a carbon dioxide atmosphere, a nitrogen stream, or an argon atmosphere can be employed.
- the compound (L) -based component may be added to the reaction system in its entirety at once, or may be added to the reaction system in small batches. . In any case, it is preferable that the total amount of the compound (L) used satisfies the preferable range described above.
- the oligomer prepared by the step (St2) preferably has a degree of condensation of about 25 to 60% when expressed by the degree of condensation P described above.
- a solution (S) is prepared by mixing an oligomer derived from the compound (L) -based component with a solution containing a carboxylic acid-containing polymer.
- a solution containing a carboxylic acid-containing polymer Is preferably in the range of 1.0-7.0, more preferably in the range of 1.0-6.0, more preferably in the range of 1.5-4.0. More preferred.
- the pH of the solution (S) can be adjusted by a known method, for example, an acidic compound such as hydrochloric acid, nitric acid, sulfuric acid, phosphoric acid, acetic acid, butyric acid, ammonium sulfate, sodium hydroxide, potassium hydroxide, and ammonium hydroxide. It can be adjusted by adding a basic compound such as sodium hydroxide, trimethylamine, pyridine, sodium carbonate, and sodium acetate. At this time, if a basic compound that gives a monovalent cation to the solution is used, a part of the carboxyl group and Z or the carboxylic anhydride group of the carboxylic acid-containing polymer can be neutralized with the monovalent ion. The effect is that it can be done.
- an acidic compound such as hydrochloric acid, nitric acid, sulfuric acid, phosphoric acid, acetic acid, butyric acid, ammonium sulfate, sodium hydroxide, potassium hydroxide, and
- the solution (S) prepared in the step (St3) changes its state over time, and eventually becomes a gel-like composition.
- the time until the solution (S) becomes a gel depends on the composition of the solution (S).
- the viscosity of the solution is stable over a long period of time and then gradually increases.
- Solution (S) was measured with a Brookfield viscometer (B-type viscometer: 60 rpm) even after standing at 25 ° C for 2 days, based on the total amount of the compound (L) -based components.
- the viscosity is 1N 'sZm 2 or less (more preferably 0.5N' sZm 2 or less, particularly preferably 0.2 N 'sZm 2 or less).
- the solution has a viscosity of 1 N 's / m 2 or less (more preferably 0.1 N-sZm 2 or less, particularly preferably 0.05 N' sZm 2 or less) even after standing at 25 ° C for 10 days. It is more preferable to adjust the composition so as to satisfy 2 or less. Further, solution), even after standing at 50 ° C 10 days at which viscosity of lN 's / m 2 or less (more preferably 0.
- the concentration of a solid is adjusted, the pH is adjusted, carboxymethyl cellulose, starch, bentonite, tragacanth gum, and stearate are adjusted.
- a viscosity modifier such as water, alginate, methanol, ethanol, ⁇ -propanol, or isopropanol, the method can be used. Wear.
- Organic solvents that can be added include, for example, lower alcohols such as methanol, ethanol, n-propanol and isopropanol; ethers such as tetrahydrofuran, dioxane and trioxane; acetone, methyl ethyl ketone, methyl bi-ketone, methyl Ketones such as isopropyl ketone; glycols such as ethylene glycol and propylene glycol; glycol derivatives such as methyl sorb, ethyl sorb and n-butyl sorb; glycerin; acetonitrile, dimethylformamide, dimethylacetamide; Dimethyl sulfoxide, sulfolane, dimethoxyethane and
- the solution (S) may be, if desired, carbonate, hydrochloride, nitrate, hydrogencarbonate, sulfate, hydrogensulfate, phosphate, boric acid, within a range not to impair the effects of the present invention.
- Metal salts of inorganic acids such as salts and aluminates
- Metal salts of organic acids such as oxalates, acetates, tartrate salts and stearate salts
- Metals of acetyl acetonate such as aluminum acetyl acetonate
- Metal complexes such as complexes, cyclopentagenyl metal complexes such as titanocene, and cyano metal complexes
- the solution is a fine powder of a metal oxide produced by hydrolyzing and polycondensing the above metal alkoxide in a wet manner; and a metal oxide prepared by hydrolyzing, polycondensing or burning the metal alkoxide in a dry manner. Fine powder; water glass strength including prepared silica fine powder, etc.
- the amount of the polyalcohols added to the solution) is preferably such that the weight ratio of the carboxylic acid-containing polymer Z polyalcohols is in the range of 10Z90-99.5 / 0.5.
- the weight ratio range is more preferably 30Z70-99Zl, even more preferably 50Z50-99Zl, and most preferably 70Z30-98Z2.
- the solution (S) prepared in the step (St3) is applied to at least one surface of the substrate.
- the surface of the substrate may be treated with a known anchor coating agent, or a known adhesive may be applied to the surface of the substrate! / ⁇ .
- the method of applying the solution (S) to the substrate is as follows. There is no particular limitation, and a known method can be used. Preferable methods include, for example, a casting method, a dive method, a roll coating method, a gravure coating method, a screen printing method, a reverse coating method, a spray coating method, a kit coating method, a die coating method, a metalling bath coating method, and a combined use of a chamber and a doctor. A coating method, a curtain coating method and the like can be mentioned.
- the solvent contained in the solution) is removed to obtain a laminate (laminate (A)) before the ionizing step.
- a known method having no particular limitation can be applied. Specifically, a method such as a hot air drying method, a hot roll contact method, an infrared heating method, and a microwave heating method can be applied alone or in combination.
- the drying temperature is not particularly limited as long as it is 15-20 ° C or less lower than the flow start temperature of the base material and 15-20 ° C lower than the thermal decomposition start temperature of the carboxylic acid-containing polymer.
- the drying temperature is preferably in the range of 80 ° C to 200 ° C, more preferably in the range of 100 to 180 ° C, and still more preferably in the range of 110 to 180 ° C.
- the removal of the solvent may be performed under normal pressure or under reduced pressure.
- the laminate (A) obtained by the above step is brought into contact with a solution containing divalent or higher-valent metal ions (hereinafter, sometimes referred to as a solution (Ml)) (the ionizing step) to thereby provide the present invention.
- a solution (Ml) a solution containing divalent or higher-valent metal ions
- the ionizing step may be performed at any stage as long as the effects of the present invention are not impaired.
- the ionizing process may be performed before or after processing into a packaging material form, or may be performed after the packaging material is filled with contents and sealed.
- the solution (Ml) can be prepared by dissolving a compound (polyvalent metal compound) that releases a metal ion having two or more valences upon dissolution in a solvent.
- a solvent used in preparing the solution (Ml) water is preferably used, but a mixture of water and an organic solvent miscible with water may be used. Examples of such a solvent include lower alcohols such as methanol, ethanol, n-propanol and isopropanol; ethers such as tetrahydrofuran, dioxane and trioxane; acetones such as methyl ethyl ketone, methyl vinyl ketone and methyl isopropyl ketone.
- Ketones such as ethylene glycol and propylene glycol; Glycol derivatives such as methyl sorb, ethylsulfate and n-butyl sorb; glycerin; acetonitrile, dimethylformamide, dimethylacetamide, dimethyl sulf Organic solvents such as foxide, sulfolane, dimethoxyethane and the like can be mentioned.
- a compound that releases a metal ion that is, a divalent or higher valent metal ion
- a metal ion that is, a divalent or higher valent metal ion
- polyvalent metal compound IV can be used.
- the polyvalent metal compound only one kind may be used, or two or more kinds may be used in combination.
- Preferred polyvalent metal compounds include calcium acetate, calcium hydroxide, magnesium acetate, zinc acetate, and barium acetate. Note that these polyvalent metal compounds may be used in the form of a hydrate.
- the concentration of the polyvalent metal compound in the solution (Ml) is not particularly limited.
- X 10- 4 in the range of wt% -50 wt%, more preferably from 1 X 10- 2 wt% -30 wt%, more preferably in the range of 1 wt% -20 wt%.
- the temperature of the solution (Ml) is not particularly limited, but the higher the temperature, the faster the ionization rate of the carboxyl group-containing polymer.
- Preferred temperatures are, for example, in the range of 30-140 ° C, preferably in the range of 40-120 ° C, more preferably in the range of 50-100 ° C.
- the laminate (A) is brought into contact with the solution (Ml), it is desirable to remove the solvent remaining in the laminate.
- a known method for removing the solvent a known method with no particular limitation can be applied. Specifically, drying methods such as hot air drying method, hot roll contact method, infrared heating method, and microwave heating method can be applied alone or in combination of two or more.
- the temperature at which the solvent is removed is not particularly limited as long as it is at least 15 to 20 ° C lower than the flow start temperature of the base material and at least 15 to 20 ° C lower than the thermal decomposition temperature of the carboxylic acid-containing polymer. Not done.
- the drying temperature is preferably in the range of 40-200 ° C, more preferably in the range of 40-150 ° C, and even more preferably in the range of 40-100 ° C. Removal of solvent at normal pressure or reduced pressure It may be carried out with the gap below! / ,.
- the layer formed in the first step is heat-treated at a temperature of 120 to 240 ° C.
- the method may further include a step of carrying out. That is, heat treatment may be performed on the laminate (A) or (B). The heat treatment may be performed at any stage as long as the removal of the solvent from the applied solution (S) is almost completed! ⁇ , but the laminate before the ionization step (that is, the laminate (A By heat-treating (1) and (2), a gas nolia laminate having a good surface appearance can be obtained.
- the temperature of the heat treatment is preferably in the range of 120 to 240 ° C, more preferably in the range of 130 to 230 ° C, and still more preferably in the range of 150 to 210 ° C.
- the heat treatment can be performed in air, under a nitrogen atmosphere, under an argon atmosphere, or the like.
- the laminate (A) or (B) may be irradiated with ultraviolet rays.
- the ultraviolet irradiation may be performed at any time after the removal of the solvent from the applied solution (S) is substantially completed.
- the method is not particularly limited, and a known method can be applied.
- the wavelength of the ultraviolet light to be irradiated is preferably in the range of 170-250 nm, and more preferably in the range of 170-190 nm and / or 230-250 nm.
- irradiation with radiation such as electron beam or ⁇ -ray may be performed instead of irradiation with ultraviolet light.
- Either the heat treatment or the ultraviolet irradiation may be performed alone, or both may be used in combination. By performing the heat treatment and the Z or UV irradiation, the gas nolia performance of the laminate may be more highly expressed.
- the surface of the base material must be treated (treatment with an anchor coating agent or applying an adhesive) before applying the solution).
- the heat treatment and the second step Before the on-step, it is preferable to carry out an aging treatment in which the substrate coated with the solution (S) is left at a relatively low temperature for a long time.
- the aging temperature is preferably 30-200 ° C, more preferably 30-150 ° C, and even more preferably 30-120 ° C.
- the aging time is preferably in the range of 0.5-10 days, more preferably in the range of 17 days, and even more preferably in the range of 115 days. By performing such aging treatment, the adhesive force between the substrate and the gas barrier layer becomes stronger.
- the gas nolia laminate of the present invention has excellent barrier properties against gases such as oxygen, water vapor, carbon dioxide gas, and nitrogen, and is exposed to bending conditions even under high humidity conditions. Can be kept high even after Even after retort treatment, it shows excellent gas barrier properties.
- the gas-barrier laminate of the present invention has good gas-nolia properties irrespective of environmental conditions such as humidity, and exhibits high gas-barrier properties even after being exposed to bending conditions. It can be applied to various applications.
- the gasnolia laminate of the present invention is particularly useful as a packaging material for food (particularly, a packaging material for retort food).
- the gas barrier laminate of the present invention can also be used as a packaging material for packaging chemicals such as agricultural chemicals and medicines, industrial materials such as precision materials, and clothing.
- the temperature is changed to 25 ° C. For 2 days.
- the viscosity of the solution before and after standing was measured using a Brookfield viscometer (B-type viscometer, rotation speed: 60 rpm). And from the initial viscosity and the viscosity two days later, The rate of increase in viscosity was calculated.
- the method for measuring the storage stability of the solution (S) in Examples 23 to 28 will be described in Example 23.
- the oxygen permeability of the laminate having a predetermined structure was measured using an oxygen permeation amount measurement device (“MOCON OX-TRAN10Z50” manufactured by Modern Control). Specifically, the laminated body was set so that the gas barrier layer faces the oxygen supply side and the OPET (the other gas noori layer in Example 11) faces the carrier gas side, and the temperature was 20 ° C and the oxygen pressure was 1 atm. The oxygen permeability (unit: cmVm 2 ⁇ day ⁇ atm) was measured under the conditions of a carrier gas pressure of 1 atm. At this time, three conditions of 65% RH, 85% RH, and 95% RH were adopted, and the oxygen supply side and the carrier gas side had the same humidity. In Examples 23 to 28, the measurement was performed at a humidity of 85% RH.
- the bouch was immersed in an autoclave filled with tap water or ion-exchanged water, and subjected to a retort treatment at 120 ° C for 30 minutes. After the retort treatment, heating was stopped, and when the internal temperature reached 60 ° C, the autoclave was taken out of the bouch and left in a room conditioned at 20 ° C and 85% RH for 1 hour. Then, the heat-sealed part was cut off with scissors, and the water adhering to the surface of the gas barrier laminate was wiped off with a paper towel. Thereafter, the bouch was left in a room conditioned at 20 ° C and 85% RH for one week, and the oxygen permeability of the obtained laminate was measured to evaluate the oxygen barrier property after the retort treatment.
- the oxygen permeability was measured using an oxygen permeability measuring device ("MOCON OX-T RAN10Z50" manufactured by Modern Control). Specifically, the laminate was set so that the gas barrier layer was facing the oxygen supply side and the PP was facing the carrier gas side, and the temperature was 20 ° C and the humidity on the oxygen supply side was 85%. Oxygen permeability (unit: cm 3 / m 2 .day'atm) was measured under the conditions of% RH, carrier gas side humidity 100% RH, oxygen pressure 1 atm, and carrier gas pressure 1 atm. The concentration of calcium metal in tap water used for retort treatment was 15 ppm. In addition, it was confirmed that metal atoms were not contained in the ion-exchanged water. In the following examples and comparative examples, retort treatment was performed using tap water unless otherwise specified. The calcium concentration in tap water used in the retort treatment was 15 ppm.
- the falling bag breaking strength was determined. That is, after the retort treatment similar to the retort treatment performed in the above evaluation (3) is performed on the bouch, the autoclave is also taken out of the voucher, and the voucher is placed in a room conditioned at 20 ° C and 85% RH. Was left for 1 hour. The bouch was lifted to a height of 1.5 m, dropped so that it was parallel to the floor. Drops were repeated until the notch was torn and the internal force leaked, and the number of drops until the water leaked was determined. Ten criticisms were prepared for one type of laminate, and the average of the ten drops was defined as the value of the break strength.
- the Fourier transform infrared spectrophotometer was used for (2) the laminate prepared for evaluation of oxygen barrier properties and (3) the retort-treated laminate prepared for evaluation of oxygen noria properties after retort treatment. (Shimadzu Corporation, 8200PC) using ATR (total reflection measurement)
- the C O stretching vibration of the carboxyl group after ionization the 1500cm- 1 - was observed in the range of 1600cm- 1.
- the maximum absorbance force in each range was calculated, and the ratio was calculated, and the ionization ratio was determined using the ratio and a calibration curve prepared in advance by the following method.
- Polyacrylic acid having a number average molecular weight of 150,000 was dissolved in distilled water, and a carboxyl group was neutralized with a predetermined amount of sodium hydroxide.
- the resulting aqueous solution of neutralized polyacrylic acid was coated on a substrate so as to have the same thickness as the gaseous layer of the laminate to be measured for the degree of ionization, and dried.
- the base material is a two-pack type anchor coating agent (Takelac 3210 (trade name) and Takenate A3072 (trade name), manufactured by Mitsui Takeda Chemical Co., Ltd .; hereinafter, may be abbreviated as AC).
- a PET film (Lumirror (trade name) manufactured by Toray Industries, Inc., having a thickness of 12 / ⁇ ⁇ ; may be abbreviated as “ ⁇ ” below) was used.
- ⁇ thickness
- 11 standard samples laminate (layer made of neutralized polyacrylic acid ZACZOPET)] were prepared, which differed in the degree of neutralization of carboxyl groups by 10 mol% between 0-100 mol%. .
- an infrared absorption spectrum was measured in an ATR (total reflection measurement) mode using a Fourier transform infrared spectrophotometer (manufactured by Shimadzu Corporation, 8200PC).
- the inorganic component content of the gas barrier layer before the ionization treatment was calculated by the above-described method, that is, the method of calculating from the weight of the charged raw materials.
- a laminate of 10 cm ⁇ 10 cm was prepared, and four sides of the laminate were fixed to a wooden frame with heat-resistant tape.
- the laminate fixed to the wooden frame was in a stretched state without loosening.
- the laminate affixed to the wooden frame was allowed to stand in a hot-air dryer having an internal temperature of 120 ° C for 5 minutes.
- the laminate affixed to the wooden frame was taken out of the dryer, allowed to cool in a room temperature atmosphere for 10 minutes, and the appearance of the laminate was observed. The appearance was evaluated according to the following criteria.
- a laminate having a structure of PET layer ZAC layer z barrier layer z adhesive layer ⁇ ) ⁇ nylon layer z adhesive layer (2) z polypropylene layer was prepared. This laminate was cut to a width of 15 mm. The T-peel strength was measured at a tensile speed of 250 mmZ with the peeling surface between the barrier layer and the adhesive layer (1).
- a laminate of 10 cm ⁇ 10 cm was prepared, and nine points were evenly selected from the forces of the laminate, and the haze value of each point was measured.
- HR-100 manufactured by Murakami Color Research Laboratory was used as a device for measuring the haze value.
- the haze value was measured according to a predetermined measurement method (ASTM D1003-61). The standard deviation was also calculated for the measured force at the nine points obtained.
- a section of the laminate was coated with an epoxy resin, and an extremely thin section was prepared using a Leica device (Reichert ULTRAC UT-S). The section was observed using a transmission electron microscope (H-800NA type) manufactured by Hitachi, Ltd.
- the solution (S) used for forming the gas barrier layer was prepared, specifically, after the addition of the compound (L) -based component to the aqueous solution of polyacrylic acid was completed, the solution was allowed to stand at 25 ° C. Then, the number of days when the solution did not flow completely was measured.
- the haze value of the laminate prepared for the evaluation of (2) oxygen barrier properties was determined based on the method of JIS K 7105. Was measured. [0146]
- the haze value [(diffuse light transmittance Z total light transmittance) X 100] is used as a representative index for evaluating the transparency of a material. Generally, the smaller the haze value, the higher the transparency of the material. The haze value below which it can be said that it is sufficiently transparent cannot be unconditionally determined because the judgment criteria differ depending on the application. However, if the haze value is 3% or less, it can be suitably applied to applications requiring a high degree of transparency.
- Polyacrylic acid (PAA) having a number-average molecular weight of 150,000 is dissolved in distilled water, and then ammonia water is added to neutralize 1.5 mol% of the carboxyl groups of the polyacrylic acid.
- a polyacrylic acid aqueous solution having a solid content of 10% by weight was obtained.
- TMOS tetramethoxysilane
- a sol is prepared by mixing 5.13 parts by weight of water with 12.7 parts by weight of 0.1 ⁇ (0.1 N) hydrochloric acid, and the sol is hydrolyzed and condensed at 10 ° C for 1 hour with stirring. The reaction was performed. The obtained sol was diluted with 185 parts by weight of distilled water, and was immediately added to 634 parts by weight of the above 10% by weight aqueous solution of polyacrylic acid under stirring to obtain a solution (S1). This solution (S1) was evaluated for storage stability by the method described above.
- a two-pack anchor coating agent (AC; Takelac 3210 (trade name) and Takenate A3072 (trade name) manufactured by Mitsui Takeda Chemical Co., Ltd.) was applied to a stretched PET film (OPET; manufactured by Toray Industries, Inc., Lumirror). (Trade name)) and dried to produce a substrate (ACZOPET) having an anchor coat layer.
- the solution (S1) is coated on the anchor coat layer of this substrate by a bar coater so that the thickness after drying becomes 2 m, dried at 80 ° C for 5 minutes, and then dried at 50 ° C.
- the samples were aged for 72 days (72 hours), and further heat-treated at 200 ° C for 5 minutes in dry air.
- a laminate gas barrier layer (2 ⁇ m) ZACZOPET (12 m) having a colorless, transparent, and good appearance gas barrier layer was obtained (hereinafter, this laminate is referred to as a laminate (1)). is there).
- a sample of 10 cm x 10 cm was cut out from the laminate (B-1), and the haze value was measured by the above method. The value three times the standard deviation of the haze value was a very good value of 0.20.
- the microstructure of the gas noria layer was observed with a transmission electron microscope.
- the gas barrier layer had a sea-island structure consisting of a marine phase (P) and an island phase (Q).
- the island phase (Q) was elliptical and the diameter of the ellipse in the major axis direction was 50-500 nm.
- the sea phase (P) has a sea-island structure consisting of a sea phase (P1) and an island phase (P2)!
- the sea phase (P1) was mainly formed of neutralized polyacrylic acid
- the island phase (P2) was mainly formed of hydrolyzed condensate of tetramethoxysilane.
- the diameter of the island phase (P2) was less than about 20 nm.
- the island facies (Q) had a sea-island structure with sea (Q1) and island (Q2) forces.
- the sea phase (Q1) is mainly formed of neutralized polyacrylic acid
- the island phase (Q2) is mainly formed of hydrolysis condensate of tramethoxysilane! , Was.
- the diameter of the island phase (Q2) was about 20 nm or less. Judging from the electron microscope images, the sea phase (P) and island phase (Q) are composed of the same components.
- the island phase (Q) has a lower concentration of the hydrolyzed condensate of tetramethoxysilane. I got high strength.
- a stretched nylon film manufactured by UCHIKA CORPORATION, emblem (trade name), 15 m in thickness, sometimes abbreviated as “ONy” hereinafter
- a polypropylene film manufactured by Tocello Inc., RXC- 18 (trade name), thickness 50 / ⁇ ⁇ , sometimes abbreviated as “ ⁇ ” below
- two-part adhesives manufactured by Mitsui Takeda Chemical Co., Ltd., ⁇ -385 (product)
- ⁇ -50 trade name
- a laminate (B-11) having a ⁇ ⁇ structure with the gas barrier layer ZACZOPETZ adhesive ZONyZ adhesive ZPP was obtained.
- the drop bag breaking strength, the degree of ionization after the retort treatment, and the oxygen permeability after the retort treatment were measured.
- the ionization degree after the retort treatment was 92 mol%, and the oxygen after the retort treatment was The transmittance showed a very good value of less than 0.2 cmVm 2 ⁇ day ⁇ atm.
- the laminate (1) described in Example 1 was produced.
- an aqueous solution was prepared by dissolving magnesium acetate in distilled water so that the concentration became 10% by weight, and the aqueous solution was kept at 80 ° C.
- the laminate (1) was immersed in this aqueous solution (80 ° C; M2) for about 20 seconds. After immersion, the laminate was taken out, the surface of the laminate was washed with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain the laminate (B-2) of the present invention. Obtained.
- the laminate (B-2) the degree of neutralization of the carboxyl group of polyacrylic acid in the gaseous methanol layer was measured by the above method.
- the arc 64 mole 0/0 of the carboxyl groups are neutralized with magnesium ions component force ivy.
- the oxygen barrier properties, surface appearance, tensile strength and elongation, and inorganic component content of the laminate (B-2) were evaluated by the methods described above.
- the gas noria layer ZACZOPE TZ adhesive ZONyZ adhesive ZPP, and the laminate (B-2-1) having a structure was prepared.
- the drop bag breaking strength, the ionization degree after the retort treatment, and the oxygen permeability after the retort treatment were measured.
- the ion permeability after the retort treatment was 88 mol%, and the oxygen permeability after the retort treatment was less than 0.2 cmVm 2 ⁇ day ⁇ atm, which was a very good value.
- the laminate (1) described in Example 1 was produced.
- an aqueous solution was prepared by dissolving zinc acetate in distilled water so that the concentration became 10% by weight, and the aqueous solution was kept at 80 ° C.
- the laminate (1) was immersed in this aqueous solution (80 ° C; M3) for about 20 seconds. After immersion, the laminate was taken out, the surface of the laminate was washed with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain the laminate (B-3) of the present invention. ).
- the degree of neutralization of the carboxyl groups of the polyacrylic acid in the gas barrier layer was measured by the above method.
- the laminate (B-3) was evaluated for oxygen barrier properties, surface appearance, tensile elongation, and inorganic component content by the methods described above.
- Polyacrylic acid (PAA) having a number average molecular weight of 150,000 was dissolved in distilled water to obtain a polyacrylic acid aqueous solution having a solid concentration of 10% by weight in the aqueous solution.
- TMOS tetramethoxysilane
- a sol was prepared by polishing 5.13 parts by weight of water and 12.7 parts by weight of 0.1N hydrochloric acid, and the sol was subjected to hydrolysis and condensation reactions at 10 ° C. for 1 hour while stirring.
- the obtained sol was diluted with 185 parts by weight of distilled water, and was immediately added to 634 parts by weight of the above 10% by weight aqueous solution of polyacrylic acid under stirring to obtain a solution (S4).
- This solution (S4) was evaluated for storage stability by the method described above.
- the gas barrier layer (2 layer) was formed in the same manner as in Example 1, except that the solution (S4) was used instead of the solution (S1).
- a laminate (4) having a structure of ⁇ (12 / ⁇ m) was produced.
- the gas noria layer in the laminate (4) was colorless and transparent and had a good surface appearance.
- the laminate (4) was subjected to ion treatment using an aqueous solution of calcium acetate (Ml-1) under the same conditions as in Example 1.
- excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (B-4) of the present invention.
- the degree of neutralization of the carboxyl groups of the polyacrylic acid in the gas noria layer was measured by the above method. As a result, it was confirmed that 63 mol% of the carboxyl groups were neutralized by calcium ions.
- the oxygen barrier property, surface appearance, tensile strength and elongation, and inorganic component content of the laminate (B-4) were evaluated by the methods described above.
- Polyacrylic acid (PAA) having a number average molecular weight of 150,000 was dissolved in distilled water to obtain a polyacrylic acid aqueous solution having a solid concentration of 10% by weight in the aqueous solution.
- TMOS tetramethoxysilane
- a sol was prepared by polishing 5.20 parts by weight of water and 12.9 parts by weight of 0.1 N hydrochloric acid, and the sol was subjected to a hydrolysis and condensation reaction at 10 ° C. for 1 hour with stirring. After the obtained sol was diluted with 239 parts by weight of distilled water, it was quickly added to 567 parts by weight of the above 10% by weight aqueous solution of polyacrylic acid under stirring to obtain a solution (S5). The storage stability of this solution (S5) was evaluated by the method described above.
- the gas barrier layer (2 layer) was formed in the same manner as in Example 1 except that the solution (S5) was used instead of the solution (S1).
- a laminate (5) having a structure of ⁇ (12 / ⁇ m) was produced.
- the gas noria layer in the laminate (5) was colorless and transparent and had a good surface appearance.
- the laminate (5) was subjected to ion treatment under the same conditions as in Example 1 using an aqueous solution of calcium acetate (Ml-1).
- excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (B-5) of the present invention.
- the laminate (B-5) the degree of neutralization of the carboxyl groups of the polyacrylic acid in the gas noria layer was measured by the above method. As a result, it was confirmed that 55 mol% of the carboxyl groups were neutralized by calcium ions.
- the laminate (B-5) was evaluated for oxygen noria, surface appearance, tensile elongation, and inorganic component content by the methods described above.
- the gaseous layer ZACZOPE TZ adhesive ZONyZ adhesive ZPP, and the laminate (B-5-1) was prepared.
- the drop bag breaking strength, the ionization degree after the retort treatment, and the oxygen permeability after the retort treatment were measured.
- the degree of ionization after retort treatment was 87 mol%,
- the oxygen permeability after the treatment showed a very good value of less than 0.2 cmVm 2 ⁇ day ⁇ atm.
- Polyacrylic acid (PAA) having a number average molecular weight of 150,000 was dissolved in distilled water to obtain an aqueous solution of polyacrylic acid having a solid content of 10% by weight in the aqueous solution.
- the gas barrier layer (2D) was formed in the same manner as in Example 1 except that the solution (S6) was used instead of the solution (S1).
- a laminate (6) having a structure of ⁇ (12 / ⁇ m) was produced.
- the gas noria layer in the laminate (6) was colorless and transparent and had a good surface appearance.
- the laminate (6) was subjected to ion treatment using an aqueous calcium acetate solution (Ml-1) under the same conditions as in Example 1.
- excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (B-6) of the present invention.
- the laminate (B-6) the degree of neutralization of the carboxyl groups of the polyacrylic acid in the gas noori layer was measured by the above-described method. As a result, it was confirmed that 70 mol% of the carboxyl groups were neutralized by calcium ions.
- the laminate (B-6) was evaluated for oxygen noria, surface appearance, and inorganic component content by the methods described above.
- the gaseous layer ZACZOPE TZ adhesive ZONyZ adhesive ZPP and the laminate (B-6-1) having a structure was prepared.
- the drop bag breaking strength, the ionization degree after the retort treatment, and the oxygen permeability after the retort treatment were measured.
- the ion permeability after the retort treatment was 95 mol%, and the oxygen permeability after the retort treatment was a very good value of less than 0.2 cmVm 2 ⁇ day ⁇ atm.
- PAA Polyacrylic acid
- TMOS tetramethoxysilane
- a sol was prepared by polishing 3.42 parts by weight of water and 8.44 parts by weight of 0.1N hydrochloric acid, and a hydrolysis and condensation reaction was carried out at 10 ° C. for 1 hour with stirring.
- the obtained sol was diluted with 123 parts by weight of distilled water, and then quickly added to 756 parts by weight of the above 10% by weight aqueous solution of polyacrylic acid under stirring to obtain a solution (S7).
- S7 The storage stability of this solution (S7) was evaluated by the method described above.
- the laminate (7) was subjected to ion treatment using an aqueous solution of calcium acetate (Ml-1) under the same conditions as in Example 1.
- excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C to obtain a laminate (B-7) of the present invention.
- the neutrality of the carboxyl group of the polyacrylic acid in the gas barrier layer was measured by the above method. As a result, it was confirmed that 67 mol% of the carboxyl groups were neutralized by calcium ions.
- the laminate (B-7) was evaluated for oxygen noria, surface appearance, tensile elongation, and inorganic component content by the methods described above.
- a gas noria layer ZACZOPE TZ adhesive ZONyZ adhesive ZPP and a laminate (B-7-1) having a structure was prepared.
- the drop bag breaking strength, the ionization degree after the retort treatment, and the oxygen permeability after the retort treatment were measured.
- the degree of ionization after the retort treatment was 93 mol%, and the oxygen permeability after the retort treatment was less than 0.2 cmVm 2 ⁇ day ⁇ atm, which was a very good value.
- Polyacrylic acid (PAA) having a number average molecular weight of 150,000 was dissolved in distilled water to obtain a polyacrylic acid aqueous solution having a solid concentration of 10% by weight in the aqueous solution.
- TMOS tetramethoxysilane
- the gas barrier layer (2nd layer) was formed in the same manner as in Example 1.
- a laminate (8) having a structure of ⁇ (12 / ⁇ m) was produced.
- the gas noria layer in the laminate (8) was colorless and transparent and had a good surface appearance.
- the laminate (8) was subjected to an ionizing treatment under the same conditions as in Example 1 using an aqueous solution of calcium acetate (Ml-1).
- excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (B-8) of the present invention.
- the laminate (B-8) the degree of neutralization of the carboxyl groups of the polyacrylic acid in the gas noria layer was measured by the above method. As a result, it was confirmed that 62 mol% of the carboxyl groups were neutralized by calcium ions.
- the laminate (B-8) was evaluated for oxygen noria, surface appearance, tensile elongation, and inorganic component content by the methods described above.
- the gas noria layer ZACZOPE TZ adhesive ZONyZ adhesive ZPP, and the laminate (B-8-1) was prepared.
- the drop bag breaking strength, the ionization degree after the retort treatment, and the oxygen permeability after the retort treatment were measured.
- the ion permeability after the retort treatment was 88 mol%, and the oxygen permeability after the retort treatment was less than 0.2 cmVm 2 ⁇ day ⁇ atm, which was a very good value.
- the weight ratio of polyacrylic acid (PAA) having a number average molecular weight of 150,000 and polyvinyl alcohol (PVA-105 (3 ⁇ 4B3 ⁇ 4 ⁇ ); viscosity average polymerization degree of 500, manufactured by Kuraray Co., Ltd.) is 97: 3 by weight. Dissolved in distilled water. Next, ammonia water was added to neutralize 1.5 mol% of the carboxyl groups of the polyacrylic acid. In this way, when the solid concentration in the aqueous solution is 10% by weight, A polymer aqueous solution containing polyacrylic acid and polybutyl alcohol was obtained.
- TMOS tetramethoxysilane
- a sol was prepared by polishing 5.13 parts by weight of water and 12.7 parts by weight of 0.1N hydrochloric acid, and the sol was subjected to hydrolysis and condensation reactions at 10 ° C. for 1 hour while stirring. After the obtained sol was diluted with 185 parts by weight of distilled water, it was quickly added to 634 parts by weight of the above aqueous polymer solution under stirring to obtain a solution (S9). The storage stability of this solution (S9) was evaluated by the method described above.
- the laminate (9) was subjected to an ion treatment under the same conditions as in Example 1 using an aqueous solution of calcium acetate (Ml-1).
- the excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (B-9) of the present invention.
- the degree of neutralization of the carboxyl groups of the polyacrylic acid in the gas noori layer was measured by the above method. As a result, it was confirmed that 58 mol% of the carboxyl groups were neutralized by calcium ions.
- the laminate (B-9) was evaluated for the oxygen noria property, surface appearance, tensile elongation, and inorganic component content by the methods described above.
- Polyacrylic acid (PAA) having a number average molecular weight of 150,000 and starch (soluble starch manufactured by Wako Pure Chemical Industries, Ltd.) were dissolved in distilled water so as to have a weight ratio of 97: 3. It was then neutralized 1.5 mol 0/0 of the carboxyl groups of the polyacrylic acid was added to ⁇ Nmoyua water. This Thus, a polymer aqueous solution having a solid content of 10% by weight and containing polyacrylic acid and starch was obtained.
- TMOS tetramethoxysilane
- a sol was prepared by polishing 5.13 parts by weight of water and 12.7 parts by weight of 0.1N hydrochloric acid, and the sol was subjected to hydrolysis and condensation reactions at 10 ° C. for 1 hour while stirring. After the obtained sol was diluted with 185 parts by weight of distilled water, it was quickly added to 634 parts by weight of the above aqueous polymer solution under stirring to obtain a solution (S10). The storage stability of this solution (S10) was evaluated by the method described above.
- the laminate (10) was subjected to an ionizing treatment using an aqueous solution of calcium acetate (Ml-1) under the same conditions as in Example 1.
- excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (B-10) of the present invention.
- the degree of neutralization of the carboxy group of the polyacrylic acid in the gas barrier layer was measured by the above method. As a result, it was confirmed that 57 mol% of the carboxyl groups were neutralized by calcium ions.
- the oxygen barrier properties, surface appearance, tensile elongation, and inorganic component content of the laminate (B-10) were evaluated by the methods described above.
- the gaseous layer ZACZOP ETZ adhesive, ONyZ adhesive, and the laminate ( ⁇ -10- 1) was prepared.
- the drop bag breaking strength, the ionization degree after the retort treatment, and the oxygen permeability after the retort treatment were measured.
- the degree of ionization after the retort treatment was 92 mol%, and the oxygen permeability after the retort treatment was a very good value of less than 0.2 cmVm 2 ⁇ day ⁇ atm.
- a solution (S1) was prepared in the same manner as in Example 1. Using this solution (S1), A gas noria layer was formed on OPET) by the following method.
- a two-pack type anchor coating agent (AC; manufactured by Mitsui Takeda Chemical Co., Ltd., Takerak 3210 (trade name) and Takenate was applied to one side of a stretched PET film (OPET; manufactured by Toray Industries, Inc., Lumirror (trade name)). A3072 (trade name)) and dried.
- the solution (S1) was coated on the anchor coat layer by a bar coater so that the thickness after drying became 1 m, and dried at 80 ° C for 5 minutes. Thereafter, the same two-component anchor coating agent as described above was applied to the other surface of the stretched PET film and dried.
- the solution (S1) was coated on this anchor coat layer by a bar coater so that the thickness after drying was Sl / zm, and dried at 80 ° C for 5 minutes. Then, a heat treatment is performed for 5 minutes at 200 ° C in dry air, and a gas barrier layer (: Lm) ZAC / OPET (12 m) ZACZ gas barrier layer (1 m) and a laminate (11) having a structure are formed. Obtained.
- the gas barrier layer was colorless and transparent and had a good surface appearance.
- the laminate (11) was subjected to an ionizing treatment using an aqueous solution of calcium acetate (Ml-1) under the same conditions as in Example 1.
- excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (B-11) of the present invention.
- the degree of neutralization of the carboxy group of the polyacrylic acid in the gas barrier layer was measured by the method described above. As a result, it was concluded that 61 mol% of the carboxyl groups were neutralized by calcium ions.
- the oxygen barrier properties, surface appearance, tensile strength and elongation, and inorganic component content of the laminate (B-11) were evaluated by the methods described above.
- the laminate (B-11-1) having a structure of a gas noori layer ZACZOP ETZACZ gas barrier layer Z adhesive ZONyZ adhesive ZPP was produced in the same manner as in Example 1 using the laminate (B-11). ) was prepared. With respect to the laminate, the falling bag breaking strength, the degree of ionization after the retort treatment, and the oxygen permeability after the retort treatment were measured. The degree of ionization of the outermost layer after the retort treatment was 90 mol%, and the oxygen permeability after the retort treatment was less than 0.2 cmVm 2 -dayatm, which was a very good value.
- the laminate (1) described in Example 1 was produced. Then, except that the time for immersing the laminate (1) in the aqueous calcium acetate solution was set to about 1 second with respect to the laminate (1), An ionizing treatment was performed under the same conditions as in Example 1. Next, the excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (B-12) of the present invention.
- the degree of neutralization of the carboxyl group of the polyacrylic acid in the gas barrier layer was measured by the above method. As a result, it was found that 5 mol% of the carboxyl groups were neutralized by calcium ions.
- the thus obtained laminate (B-12) was evaluated for oxygen barrier properties, surface appearance, tensile elongation, and inorganic component content by the methods described above.
- a laminate (B-12-1) having a structure of a gas noria layer ZACZOP ETZ adhesive, ONyZ adhesive, and ⁇ was prepared.
- the drop bag breaking strength, the ionization degree after the retort treatment, and the oxygen permeability after the retort treatment were measured.
- the degree of ionization after the retort treatment was 5 mol%.
- the oxygen permeability after the retort treatment was 60 cm 3 Zm 2 'dayatm.
- the retort treatment was performed using ion-exchanged water.
- Example 1 the laminate (1) described in Example 1 was produced. Then, ion irradiation was performed on the laminate (1) under the same conditions as in Example 1 except that the time for immersing the laminate (1) in the aqueous calcium acetate solution (MI-1) was changed from 20 seconds to 3 seconds. A dani process was performed. Next, excess acetic acid calcium was removed by washing with distilled water adjusted to 80 ° C, and further dried at 80 ° C for 5 minutes to obtain a laminate (B-13) of the present invention. For the laminate (B-13), the degree of neutralization of the carboxyl groups of the polyacrylic acid in the gas barrier layer was measured by the method described above.
- MI-1 aqueous calcium acetate solution
- B-13 the degree of neutralization of the carboxyl groups of the polyacrylic acid in the gas barrier layer was measured by the method described above.
- the thus obtained laminate (B-13) was evaluated for oxygen barrier properties, surface appearance, tensile elongation, and inorganic component content by the methods described above.
- the laminate (B-13) in the same manner as in Example 1, the laminate (B-13-1) having a structure of a gas noria layer ZACZOP ETZ adhesive, ONyZ adhesive, and ⁇ was prepared.
- the drop bag breaking strength, the ionization degree after the retort treatment, and the oxygen permeability after the retort treatment were measured.
- the degree of ionization after the retort treatment was 15 mol%.
- the oxygen permeability after retort treatment showed a good value of 12 cm 3 / m 2 'dayatm.
- the retort treatment was performed using ion-exchanged water.
- Example 4 Using the laminate (4) produced in Example 4 as it was without performing ionization treatment, a laminate having a structure called a gas nolia layer ZACZOPETZ adhesive ZONyZ adhesive ZPP was produced in the same manner as in Example 1. . With respect to the laminate, the falling bag breaking strength, the ionization degree after the retort treatment, and the oxygen permeability after the retort treatment were measured. The degree of ionization after retort treatment was 0%. The oxygen permeability after the retort treatment was 87 cm 3 Zm 2 ⁇ day ⁇ atm, and the properties were inferior to those of the laminate of Example. In this comparative example, the retort treatment was performed using ion-exchanged water. In addition, Table 2 below also shows the results of evaluating the oxygen barrier properties, surface appearance, tensile strength, and inorganic component content of the laminate (4).
- Polyacrylic acid (PAA) having a number average molecular weight of 150,000 was dissolved in distilled water to obtain a polyacrylic acid aqueous solution having a solid concentration of 10% by weight in the aqueous solution.
- a laminate (polyacrylic acid) was prepared in the same manner as in Example 1 except that the aqueous solution of 10% by weight of polyacrylic acid was used instead of the solution (S1). ⁇ (12 / ⁇ m)).
- the polyacrylic acid layer was colorless and transparent and had a good surface appearance.
- Table 1 shows the manufacturing conditions of the above Examples and Comparative Examples.
- Table 2 shows the evaluation results and measurement results.
- the laminates (B-1) and (B-13) of Examples 1-113 were subjected to the ionizing treatment under any of the humidity conditions. Higher oxygen barrier properties than body (4).
- the laminates (B-1) and (B-11) of Examples 11 and 13 and And the laminate (B-13), in particular, the laminates (B-1) to (B-11) of Examples 11 to 11 exhibited high oxygen barrier properties under any conditions that did not depend on humidity. .
- These laminates were transparent and had good surface appearance. Furthermore, these laminates showed good characteristics without inferior bow I tensile strength and elongation as compared with a single-layer OPET film having a gas barrier layer formed thereon.
- the multilayered product (B-11) -1 (B-13-1) having a multi-layered structure produced in Examples 1-113 has a high falling bag breaking strength and good bending resistance.
- Examples 1-113 has a high falling bag breaking strength and good bending resistance.
- a solution (S1) was prepared in the same manner as in Example 1. Using this solution (S1), a gas noria layer was formed on a substrate (OPET) by the following method.
- a substrate (AC / OPET) having an anchor coat layer (adhesive layer) having a thickness of 0.1 / zm was produced.
- the solution (S1) was coated on the anchor coat layer of this substrate by a bar coater so that the thickness after drying became 1 m, and then dried at 80 ° C for 5 minutes. Thereafter, the same two-component anchor coating agent as described above was applied to the other surface of the stretched PET film at the same thickness and dried.
- the solution (S1) was coated on the anchor coat layer by a bar coater so that the thickness after drying became 1 m, and dried at 80 ° C for 5 minutes.
- the gas barrier layer was colorless and transparent and had a good surface appearance.
- the laminate (14) was subjected to an ionizing treatment using an aqueous solution of calcium acetate (Ml-1) under the same conditions as in Example 1.
- excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (B-1) of the present invention.
- a laminate (B-141) having a structure of a gas noori layer ZACZOP ETZACZ gas barrier layer Z adhesive ZONyZ adhesive ZPP was prepared.
- the laminated body was measured for drop bag breaking strength, peel strength, ionization degree after retort treatment, and oxygen permeability after retort treatment.
- the ionization degree of the outermost layer after the retort treatment was 93 mol%, and the oxygen permeability after the retort treatment showed a very good value of less than 0.2 cmV m 2 ⁇ day ⁇ atm.
- the gas barrier layer (: m) ZAC (0.2 ⁇ ) / ⁇ (12 ⁇ ) / AC (0 2 / ⁇ )
- a laminate (15) having a structure of a gas barrier layer (1 m) was obtained.
- the gas barrier layer was colorless and transparent and had a good surface appearance.
- the laminate (15) was subjected to an ionizing treatment using an aqueous solution of calcium acetate (Ml-1) under the same conditions as in Example 1.
- excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (B-1) of the present invention.
- a laminate (B-15-1) having a structure of a gas noori layer ZACZOP ETZACZ gas barrier layer Z adhesive ZONyZ adhesive ZPP ) was prepared.
- the laminated body was measured for drop bag breaking strength, peel strength, ionization degree after retort treatment, and oxygen permeability after retort treatment.
- the ionization degree of the outermost layer after the retort treatment was 90 mol%, and the oxygen permeability after the retort treatment showed a very good value of less than 0.2 cmV m 2 ⁇ day ⁇ atm.
- the main component of the two-component anchor coating agent, the curing agent, and ethyl acetate water content in the ethyl acetate was 320 ppm
- the weight ratio of the main agent to the curing agent was 3Z1 (main component Z curing agent).
- the gas noria layer (1 ⁇ m) / AC (0.1 ⁇ m) / OPET (12 m) / AC (0.1 ⁇ m) Z gas barrier layer (1 ⁇ m) m) and a laminate (16) having a ⁇ ⁇ structure was obtained.
- the gas barrier layer was colorless and transparent and had a good surface appearance.
- the laminate (16) was subjected to an ionizing treatment using an aqueous solution of calcium acetate (Ml-1) under the same conditions as in Example 1.
- the excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (B-16) of the present invention.
- the degree of neutralization of the carboxy group of the polyacrylic acid in the gas barrier layer was measured by the above method. As a result, it was concluded that 61 mol% of the carboxyl groups were neutralized by calcium ions.
- the oxygen barrier properties, surface appearance, change in appearance due to heating, tensile strength and elongation, haze, and inorganic component content of the laminate (B-16) were evaluated by the methods described above.
- a laminate (B-16-1) having a structure of a gas noori layer ZACZOP ETZACZ gas barrier layer Z adhesive ZONyZ adhesive ZPP ) was prepared.
- the laminated body was measured for drop bag breaking strength, peel strength, ionization degree after retort treatment, and oxygen permeability after retort treatment.
- the ionization degree of the outermost layer after the retort treatment was 90 mol%, and the oxygen permeability after the retort treatment showed a very good value of less than 0.2 cmV m 2 ⁇ day ⁇ atm.
- the weight ratio of the main agent and the curing agent to the main agent of the two-component anchor coating agent, the curing agent, and ethyl acetate was set to 1Z1 (the main agent Z curing agent). Except for this, in the same manner as in Example 14, the gas noria layer (: Lm) / AC (0.1 ⁇ ⁇ ) / 0 PET (12 m) / AC (0.1 ⁇ m) Z gas barrier layer (1 m) and a laminate (17) having a ⁇ ⁇ structure was obtained.
- the gas barrier layer was colorless and transparent and had a good surface appearance.
- the laminate (17) was subjected to an ionizing treatment using an aqueous calcium acetate solution (Ml-1) under the same conditions as in Example 1.
- the excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (B-17) of the present invention.
- the degree of neutralization of the carboxy group of the polyacrylic acid in the gas barrier layer was measured by the above method. As a result, it was concluded that 61 mol% of the carboxyl groups were neutralized by calcium ions.
- the oxygen barrier properties, peel strength, surface appearance, changes in appearance due to heating, tensile strength and elongation, haze, and inorganic component content of the laminate (B-17) were evaluated by the methods described above. .
- a laminate (B-17-1) having a structure of a gas noori layer ZACZOP ETZACZ gas barrier layer Z adhesive ZONyZ adhesive ZPP ) was prepared.
- the laminated body was measured for drop bag breaking strength, peel strength, ionization degree after retort treatment, and oxygen permeability after retort treatment.
- the ionization degree of the outermost layer after the retort treatment was 90 mol%, and the oxygen permeability after the retort treatment showed a very good value of less than 0.2 cmV m 2 ⁇ day ⁇ atm.
- Example 14 use the same method as in Example 14 for the gas noria layer (1 ⁇ m) / AC (0.1 ⁇ / ⁇ (12 ⁇ ⁇ ) / AC (0.1 m) Z gas barrier layer A laminate (18) having a structure of (: m) was obtained, and the gas barrier layer was colorless and transparent, and had a good surface appearance.
- the curing agent used was Takenate A50 (trade name, manufactured by Mitsui Takeda Chemical Co., Ltd.). (Product name).
- the main agent, the curing agent, and ethyl acetate (the water content in the ethyl acetate was 1200 ppm) were mixed such that the weight ratio of the main agent and the curing agent was 4Z3 (main agent Z curing agent).
- the laminated body (18) was subjected to an ionizing treatment using an aqueous solution of calcium acetate (Ml-1) under the same conditions as in Example 1.
- excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (B-18) of the present invention.
- the degree of neutralization of the carboxy group of the polyacrylic acid in the gas barrier layer was measured by the method described above. As a result, it was concluded that 61 mol% of the carboxyl groups were neutralized by calcium ions.
- the oxygen barrier properties, surface appearance, change in appearance due to heating, tensile strength and elongation, haze, and inorganic component content of the laminate (B-18) were evaluated by the methods described above.
- a laminate (B-18-1) having a structure of a gas noori layer ZACZOP ETZACZ gas barrier layer Z adhesive ZONyZ adhesive ZPP ) was prepared.
- the laminated body was measured for drop bag breaking strength, peel strength, ionization degree after retort treatment, and oxygen permeability after retort treatment.
- the ionization degree of the outermost layer after the retort treatment was 90 mol%, and the oxygen permeability after the retort treatment showed a very good value of less than 0.2 cm / m ⁇ day ⁇ atm.
- the anchor coating agent a two-pack type anchor coating agent using a polyol-based main agent and an aliphatic isocyanate-based curing agent that is hardly affected by moisture in the organic solvent was applied.
- Takelac A626 (trade name) manufactured by Mitsui Takeda Chemical Co., Ltd. was used as the base agent
- Takenate A50 (trade name) manufactured by Mitsui Takeda Chemical Co., Ltd. was used as the curing agent.
- the main agent, curing agent, and ethyl acetate water content in ethyl acetate was 560 ppm) were mixed so that the weight ratio of the main agent and curing agent was 4Z3 (main agent Z curing agent), and this was stretched PET film.
- OP ET Lumirror (trade name), manufactured by Toray Industries, Inc.) and dried.
- a substrate (AC / OPET) having an anchor coat layer (adhesive layer) having a thickness of 0.1 ⁇ m was produced.
- the laminate (19) was subjected to an ionizing treatment using an aqueous solution of calcium acetate (Ml-1) under the same conditions as in Example 1.
- the excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (B-19) of the present invention.
- the degree of neutralization of the carboxy group of the polyacrylic acid in the gas barrier layer was measured by the above method. As a result, it was concluded that 61 mol% of the carboxyl groups were neutralized by calcium ions.
- the oxygen barrier property, surface appearance, change in appearance due to heating, tensile strength and elongation, haze, and inorganic component content of the laminate (B-19) were evaluated by the methods described above.
- an OPETZACZ vapor-deposited thin film layer Z gas barrier layer Z adhesive ZONyZ adhesive ZPP and a laminate having a-structure (B- 19 1) was prepared.
- the laminated body was measured for drop bag breaking strength, peel strength, ionization degree after retort treatment, and oxygen permeability after retort treatment.
- the degree of ionization of the outermost layer after the retort treatment was 90 mol%, and the oxygen permeability after the retort treatment was less than 0.2 cmVm 2 -day / atm, which was a very good value.
- the anchor coating agent a two-component anchor coating agent using a polyol-based main agent and an aliphatic isocyanate-based curing agent was applied.
- Takelac A626 (trade name) manufactured by Mitsui Takeda Chemical Co., Ltd. was used as the main agent
- Takerate A50 (trade name) manufactured by Takei Mitsui Chemical Co., Ltd. was used as the curing agent.
- the main agent, the curing agent, and ethyl acetate water content in the ethyl acetate was 620 ppm) were mixed so that the weight ratio of the main agent and the curing agent was 4/3 (main agent / hardening agent).
- Stretched PET film (OPET; Toray Industries, Inc., Lumirror (trade name) ) Coated on top and dried.
- a substrate AC / OPET
- an anchor coat layer adheresive layer having a thickness of 0.1 / zm was produced.
- a silicon oxide layer (thickness: 25 nm) was deposited on the anchor coat layer in a vacuum deposition apparatus using an electron beam heating method.
- the solution (S1) is coated on the silicon oxide layer with a bar coater so that the thickness after drying becomes 1 / zm, and then dried at 80 ° C for 5 minutes. Heat treatment was performed at 200 ° C for 5 minutes.
- a laminate (20) having a gas barrier layer (1 m), a Z-oxidized silicon layer ZACZOPET (12 m) t, and a hollow structure was obtained.
- the gas barrier layer was colorless and transparent and had a good surface appearance.
- the laminate (20) was subjected to an ionizing treatment using an aqueous solution of calcium acetate (Ml-1) under the same conditions as in Example 1.
- excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (B-20) of the present invention.
- the degree of neutralization of the carboxy group of the polyacrylic acid in the gas barrier layer was measured by the above method. As a result, it was a component that 60 mol% of the carboxyl groups were neutralized by calcium ions.
- the oxygen barrier properties, surface appearance, change in appearance due to heating, tensile strength and elongation, haze, and inorganic component content of the laminate (B-20) were evaluated by the methods described above.
- an OPETZACZ vapor-deposited thin film layer Z gas barrier layer Z adhesive ZONyZ adhesive ZPP and a laminate having a ⁇ ⁇ structure (B- ) was prepared.
- the laminated body was measured for drop bag breaking strength, peel strength, ionization degree after retort treatment, and oxygen permeability after retort treatment.
- the degree of ionization of the outermost layer after the retort treatment was 88 mol%, and the oxygen permeability after the retort treatment showed a very good value of less than 0.2 cmVm 2 -day atm.
- the gas barrier layer (: m) ZAC (0. ⁇ ) / ⁇ ⁇ 12 ⁇ ) / AC (0) was obtained in the same manner as in Example 14 except that the heat treatment was not performed at 200 ° C. for 5 minutes. : M) A laminate (21) having a structure of Z gas barrier layer (1 m) was obtained. The gas barrier layer was colorless and transparent and had a good surface appearance.
- a laminate (B-21-1) having a structure of a gas noori layer ZACZOP ETZACZ gas barrier layer Z adhesive ZONyZ adhesive ZPP ) was prepared.
- the laminated body was measured for drop bag breaking strength, peel strength, ionization degree after retort treatment, and oxygen permeability after retort treatment.
- the ionization degree of the outermost layer after the retort treatment was 96 mol%, and the oxygen permeability after the retort treatment showed a very good value of less than 0.3 cmV m 2 ′ day atm.
- the oxygen permeability after retort treatment using ion-exchanged water was 0.3 cmVm 2 ⁇ day ⁇ atm.
- the laminate (22) was subjected to an ionization treatment under the same conditions as in Example 1 except that the ionization treatment time was 300 seconds.
- excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (B-22) of the present invention.
- the degree of neutralization of the carboxy group of the polyacrylic acid in the gas barrier layer was measured by the method described above. As a result, 97 mol% of the carboxyl groups were neutralized by calcium ions.
- the oxygen barrier property, surface appearance, change in appearance due to heating, tensile strength and elongation, haze, and inorganic component content of the laminate (B-22) were evaluated by the methods described above.
- a laminate having a structure of a gas noori layer ZACZOP ETZACZ gas barrier layer Z adhesive ZONyZ adhesive ZPP (B-22-1) was prepared.
- the laminated body was measured for drop bag breaking strength, peel strength, ionization degree after retort treatment, and oxygen permeability after retort treatment.
- the ionization degree of the outermost layer after the retort treatment was 93 mol%, and the oxygen permeability after the retort treatment showed a very good value of less than 0.2 cmV m 2 ′ day atm.
- the retort treatment was performed with ion-exchanged water.
- the obtained laminate was subjected to a neutralization treatment with an aqueous sodium acetate solution as described below.
- sodium acetate was dissolved in distilled water to a concentration of 10% by weight, and the aqueous solution was kept at 80 ° C. Then, the laminate was immersed in this aqueous solution for about 20 seconds. After immersion, the laminate was taken out, the surface of the laminate was washed with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (C3).
- the degree of neutralization of the carboxyl groups of the polyacrylic acid in the gas barrier layer was measured by the above method.
- a gas nolia layer ZACZOPE TZACZ gas barrier layer Z adhesive ZONyZ adhesive ZPP and a laminate having a ⁇ ⁇ structure (C—3-1) was prepared.
- the falling bag breaking strength, the peel strength, the ionization degree after the retort treatment, and the oxygen permeability after the retort treatment were measured.
- the degree of ionization of the outermost layer after the retort treatment was 63 mol%, and the oxygen permeability after the retort treatment was 84 cm 3 Zm 2 'dayatm.
- the retort treatment was performed using ion-exchanged water.
- Table 3 shows the manufacturing conditions of Examples 14 to 21 and Comparative Example 3 described above.
- Table 4 shows the evaluation results and measurement results.
- the nitrogen content of the anchor coating agent is a value obtained by elemental analysis.
- Example 19 0. 2> 0. 2> 0. 2> 0. 2> 0.30 AA AA 380
- Example 20 0. 2> 0. 2> 0. 2> 0. 2> 0. 30 AA AA 360
- Polyacrylic acid (PAA) having a number-average molecular weight of 150,000 is dissolved in distilled water, and then ammonia water is added to neutralize 1.5 mol% of the carboxyl groups of the polyacrylic acid.
- a polyacrylic acid aqueous solution having a solid content of 10% by weight was obtained.
- TMOS tetramethoxysilane
- a two-pack type anchor coating agent (Takelac 3210 (trade name) and Takenate A3072 (trade name) manufactured by Mitsui Takeda Chemical Co., Ltd.) is coated on an oriented PET film (OPET) and dried.
- OPET oriented PET film
- AZOPET anchor coat layer
- the solution (S23) was coated on the anchor coat layer of the base material using a bar coater so that the thickness after drying was 2 m, dried at 80 ° C for 5 minutes, and further dried in dry air. At 200 ° C. for 5 minutes.
- a laminate (23) having a structure of gas barrier layer (2 ⁇ m) / A ⁇ / ⁇ (12 ⁇ ⁇ ) was obtained.
- the gas barrier layer was colorless and transparent and had a very good appearance.
- the laminate (23) was immersed in this aqueous solution (80 ° C; MI-1) for about 5 seconds. After immersion, the laminate was taken out, the surface of the laminate was washed with distilled water adjusted to 80 ° C., and then dried at 80 ° C. for 5 seconds to obtain the laminate of the present invention (B— 23) was obtained.
- the degree of neutralization of the carboxyl groups of the polyacrylic acid in the gas barrier layer was measured by the above method. As a result, it was found that 69 mol% of the carboxyl groups were neutralized by calcium ions.
- the thus obtained laminate (B-23) was evaluated for oxygen noria, haze, and inorganic component content by the methods described above.
- a laminated body (B-23-1) having a structure of the gas noria layer ZAC / OPETZ adhesive ZONyZ adhesive ⁇ and ⁇ ⁇ was obtained.
- the degree of neutralization after the retort treatment and the oxygen permeability after the retort treatment were measured.
- the degree of neutralization after the retort treatment was 92 mol%, and the oxygen permeability after the retort treatment showed a very good value of less than 0.2 cmVm 2 • day ⁇ atm.
- Polyacrylic acid (PAA) having a number-average molecular weight of 150,000 is dissolved in distilled water, and then ammonia water is added to neutralize 1.5 mol% of the carboxyl groups of the polyacrylic acid.
- a polyacrylic acid aqueous solution having a solid content of 10% by weight was obtained.
- the ionization treatment was performed using 1). Next, excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (B-24) of the present invention.
- carboxy of polyacrylic acid in the gas barrier layer The degree of neutralization of the sil group was measured by the method described above. As a result, it was found that 86 mol% of the carboxyl groups were neutralized by calcium ions. Further, the oxygen noricity, haze, and inorganic component content of the laminate (B-24) were evaluated by the methods described above.
- Polyacrylic acid (PAA) having a number-average molecular weight of 150,000 is dissolved in distilled water, and then ammonia water is added to neutralize 1.5 mol% of the carboxyl groups of the polyacrylic acid.
- a polyacrylic acid aqueous solution having a solid content of 10% by weight was obtained.
- the obtained sol was diluted with 189 parts by weight of distilled water, and then quickly added to 541 parts by weight of the above 10% by weight aqueous solution of polyacrylic acid under stirring to obtain a solution (S25).
- This solution (S25) was evaluated for storage stability by the method described above.
- a gas barrier layer was prepared in the same manner as in Example 23 except that the solution (S25) was used instead of the solution (S23).
- a laminate (25) having a structure of ⁇ (12 / ⁇ m) was produced.
- the gas noria layer in the laminate (25) was colorless and transparent, and the surface appearance was very good.
- the ionization treatment was performed using 1). Next, excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (B-25) of the present invention.
- the degree of neutralization of the carboxyl group of the polyacrylic acid in the gas barrier layer was measured by the above method. As a result, 50 % was neutralized with calcium ions. Further, the oxygen noricity, haze, and inorganic component content of the laminate (B-25) were evaluated by the methods described above.
- Polyacrylic acid (PAA) having a number-average molecular weight of 150,000 is dissolved in distilled water, and then ammonia water is added to neutralize 1.5 mol% of the carboxyl groups of the polyacrylic acid.
- a polyacrylic acid aqueous solution having a solid content of 10% by weight was obtained.
- a gas barrier layer was prepared in the same manner as in Example 23 except that the solution (S26) was used instead of the solution (S23).
- a laminate (26) having a structure of ⁇ (12 / ⁇ m) was produced.
- the gas nori layer in the laminate (26) was colorless and transparent, and the surface appearance was very good.
- the ionization treatment was performed using 1). Next, excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (B26) of the present invention.
- the degree of neutralization of the carboxyl group of the polyacrylic acid in the gas barrier layer was measured by the above method. As a result, it was found that 55 mol% of the carboxyl groups were neutralized by calcium ions.
- the laminate (B-26) The oxygen noria, haze, and inorganic component content were evaluated by the methods described above.
- Polyacrylic acid (PAA) having a number average molecular weight of 150,000 was dissolved in distilled water to obtain a polyacrylic acid aqueous solution having a solid concentration of 10% by weight in the aqueous solution.
- a gas barrier layer was prepared in the same manner as in Example 23 except that the solution (S27) was used instead of the solution (S23).
- a laminate (27) having a structure of ⁇ (12 / ⁇ m) was produced.
- the gas nori layer in the laminate (27) was colorless and transparent, and the surface appearance was very good.
- the ionization treatment was performed using 1). Next, excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (B-27) of the present invention.
- the degree of neutralization of the carboxyl group of the polyacrylic acid in the gas barrier layer was measured by the above method. As a result, it was found that 69 mol% of the carboxyl groups were neutralized by calcium ions. Further, the oxygen noricity, haze, and inorganic component content of the laminate (B-27) were evaluated by the methods described above.
- the gas noria layer ZACZO A laminate (B-27-1) having a PET structure and a ZONyZ adhesive ZPP was prepared.
- the degree of neutralization after the retort treatment and the oxygen permeability after the retort treatment were measured.
- the degree of neutralization after the retort treatment was 91 mol%, and the oxygen permeability after the retort treatment was less than 0.2 cmVm 2 ⁇ day ⁇ atm, which was a very good value.
- Polyacrylic acid (PAA) having a number average molecular weight of 150,000 was dissolved in distilled water to obtain a polyacrylic acid aqueous solution having a solid concentration of 10% by weight in the aqueous solution.
- a gas barrier layer was prepared in the same manner as in Example 23 except that the solution (S28) was used instead of the solution (S23).
- a laminate (28) having a structure of ⁇ (12 / ⁇ m) was produced.
- the gas nori layer in the laminate (28) was colorless and transparent, and the surface appearance was very good.
- the obtained laminate (28) was subjected to an ionization treatment using an aqueous calcium acetate solution (Ml-1) under the same conditions as in Example 23. Next, excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (B-6) of the present invention.
- the degree of neutralization of the carboxyl group of the polyacrylic acid in the gas barrier layer was measured by the above method. As a result, it was found that 85 mol% of the carboxyl groups were neutralized by calcium ions. Further, the oxygen noricity, haze, and inorganic component content of the laminate (B-28) were evaluated by the methods described above.
- Polyacrylic acid (PAA) having a number average molecular weight of 150,000 was dissolved in distilled water to obtain a polyacrylic acid aqueous solution having a solid concentration of 10% by weight in the aqueous solution.
- a gas barrier layer was prepared in the same manner as in Example 23 except that the solution (S29) was used instead of the solution (S23).
- a laminate (29) having a structure of ⁇ (12 / ⁇ m) was produced.
- the gas nori layer in the laminate (29) was colorless and transparent, and had a good surface appearance.
- the ionization treatment was performed using 1). Next, excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (B-29) of the present invention.
- the degree of neutralization of the carboxyl group of the polyacrylic acid in the gas barrier layer was measured by the above method. As a result, it was found that 63 mol% of the carboxyl groups were neutralized by calcium ions. Further, the oxygen noricity, haze, and inorganic component content of the laminate (B-29) were evaluated by the methods described above.
- Polyacrylic acid (PAA) having a number-average molecular weight of 150,000 is dissolved in distilled water, and then ammonia water is added to neutralize 1.5 mol% of the carboxyl groups of the polyacrylic acid.
- a polyacrylic acid aqueous solution having a solid content of 10% by weight was obtained.
- TMOS tetramethoxysilane
- a sol was prepared by mixing 93 parts by weight and 14.7 parts by weight of 0.1N hydrochloric acid, and the sol was subjected to a hydrolysis and condensation reaction at 10 ° C. for 1 hour under agitation with stirring.
- the obtained sol was diluted with 173 parts by weight of distilled water, and then immediately added to 625 parts by weight of the above 10% by weight aqueous solution of polyacrylic acid under stirring to obtain a solution (S30).
- This solution (S30) was evaluated for storage stability by the method described above.
- the gas noria layer (1 ⁇ m) / AC (0. ⁇ / ⁇ (12 ⁇ ) / AC (0.1 m) was obtained in the same manner as in Example 14.
- a laminate (30) having a structure of Z gas barrier layer (: m) was obtained, and the gas barrier layer was colorless and transparent, and had a good surface appearance.
- a two-pack type anchor coating agent using a main agent and an aliphatic isocyanate-based curing agent was applied, Takelac A626 (trade name) manufactured by Mitsui Takeda Chemical Co., Ltd. was used as the main agent, and Mitsui Takeda Chemical Co., Ltd. was used as the curing agent.
- Takenate A50 (trade name) manufactured by the company was used.
- the main agent, the curing agent and the ethyl acetate water content in the ethyl acetate was 520 ppm
- the weight ratio of the main agent and the hardener was 4 / 3 (base agent Z curing agent).
- the laminate (30) was subjected to an ionizing treatment using an aqueous solution of calcium acetate (Ml-1) under the same conditions as in Example 1.
- excess calcium acetate was removed by washing with distilled water adjusted to 80 ° C, and then dried at 80 ° C for 5 minutes to obtain a laminate (B-30) of the present invention.
- the degree of neutralization of the carboxy group of the polyacrylic acid in the gas barrier layer was measured by the above method. As a result, 97 mol% of the carboxyl groups were neutralized by calcium ions.
- the oxygen barrier properties, surface appearance, changes in appearance due to heating, tensile strength and elongation, haze, and inorganic component content of the laminate (B-30) were evaluated by the methods described above. [0287] Further, using the laminate (B-30), in the same manner as in Example 1, a laminate (B-30-1) having a structure of a gas noori layer ZACZOP ETZACZ gas barrier layer Z adhesive ZONyZ adhesive ZPP ) was prepared. The laminated body was measured for drop bag breaking strength, peel strength, ionization degree after retort treatment, and oxygen permeability after retort treatment.
- the ionization degree of the outermost layer after the retort treatment was 98 mol%, and the oxygen permeability after the retort treatment showed a very good value of less than 0.2 cmV m 2 ⁇ day ⁇ atm.
- Polyacrylic acid (PAA) having a number-average molecular weight of 150,000 is dissolved in distilled water, and then ammonia water is added to neutralize 1.5 mol% of the carboxyl groups of the polyacrylic acid.
- a polyacrylic acid aqueous solution having a solid content of 10% by weight was obtained.
- TMOS tetramethoxysilane
- a sol was prepared by mixing 5.93 parts by weight of distilled water and 14.7 parts by weight of 0.1N hydrochloric acid, and the sol was subjected to hydrolysis and condensation at 10 ° C. for 1 hour with stirring. After the obtained sol was diluted with 176 parts by weight of distilled water, it was quickly added to 622 parts by weight of the above 10% by weight aqueous solution of polyacrylic acid under stirring to obtain a solution (S31). This solution (S31) was evaluated for storage stability by the method described above.
- the gas noria layer (1 ⁇ m) / AC (0. ⁇ / ⁇ (12 ⁇ ) / AC (0.1 m) was obtained in the same manner as in Example 14.
- a laminate (31) having a structure of Z gas barrier layer (: m) was obtained, and the gas barrier layer was colorless and transparent, and had a good surface appearance.
- a two-pack type anchor coating agent using a main agent and an aliphatic isocyanate-based curing agent was applied, Takelac A626 (trade name) manufactured by Mitsui Takeda Chemical Co., Ltd. was used as the main agent, and Mitsui Takeda Chemical Co., Ltd. was used as the curing agent.
- Takenate A50 (trade name) manufactured by the company was used.
- the main agent, the curing agent and the ethyl acetate water content in the ethyl acetate was 520 ppm
- the weight ratio of the main agent and the hardener was 4 / 3 (base agent Z curing agent).
- the laminate (31) was subjected to an ionizing treatment using an aqueous calcium acetate solution (Ml-1) under the same conditions as in Example 1.
- the excess calcium acetate was then adjusted to 80 ° C. It was removed by washing with distilled water, and then dried at 80 ° C. for 5 minutes to obtain a laminate (B-31) of the present invention.
- the degree of neutralization of the carboxy group of the polyacrylic acid in the gas barrier layer was measured by the above method. As a result, it was confirmed that 82 mol% of the carboxyl groups were neutralized by calcium ions.
- the oxygen barrier property, surface appearance, change in appearance due to heating, tensile strength and elongation, haze, and inorganic component content of the laminate (B-31) were evaluated by the methods described above.
- a laminate (B-30-1) having a structure of a gas noori layer ZACZOP ETZACZ gas barrier layer Z adhesive ZONyZ adhesive ZPP ) was prepared.
- the laminated body was measured for drop bag breaking strength, peel strength, ion rejection after retort treatment, and oxygen permeability after retort treatment.
- the ionization degree of the outermost layer after the retort treatment was 97 mol%, and the oxygen permeability after the retort treatment showed a very good value of less than 0.2 cmV m 2 ⁇ day ⁇ atm.
- Tables 5 and 6 show the manufacturing conditions and evaluation results of the above examples.
- the laminates ( ⁇ -23)-( ⁇ -31) of Examples 23-31 exhibited high oxygen noria even under high humidity conditions. Also, the laminates (23-23)-( ⁇ 28) and ( ⁇ -30) had a small haze value of 3% or less, and were transparent and had a good surface appearance.
- the coating properties were also good.
- the present invention can be applied to a laminate requiring gas nolia property and a method for producing the same.
- the gas nolia laminate of the present invention shows high oxygen noria regardless of humidity, and shows high oxygen barrier even after retort treatment. Therefore, the gas barrier laminate of the present invention is effectively used as a packaging material for food, medicine, medical equipment, machine parts, clothing, and the like, and is particularly useful for food packaging applications that require gas barrier properties under high humidity. Used effectively.
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Abstract
Description
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Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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ES04819865.9T ES2595513T3 (es) | 2003-12-03 | 2004-12-01 | Laminado de barrera frente a gases y artículo envasado, y método para producir un laminado de barrera frente a gases |
CA 2547567 CA2547567C (en) | 2003-12-03 | 2004-12-01 | Gas barrier layered product and packaging medium, and method for producing gas barrier layered product |
EP04819865.9A EP1690678B1 (en) | 2003-12-03 | 2004-12-01 | Gas barrier laminate and packaged article, and method for producing gas barrier laminate |
JP2005515946A JP4365826B2 (ja) | 2003-12-03 | 2004-12-01 | ガスバリア性積層体および包装体ならびにガスバリア性積層体の製造方法 |
US10/581,448 US7763335B2 (en) | 2003-12-03 | 2004-12-01 | Gas barrier layered product and packaging medium, and method for producing gas barrier layered product |
AU2004294417A AU2004294417B2 (en) | 2003-12-03 | 2004-12-01 | Gas barrier layered product and packaging medium, and method for producing gas barrier layered product |
US12/768,485 US8039071B2 (en) | 2003-12-03 | 2010-04-27 | Gas barrier layered product and packaging medium, and method for producing gas barrier layered product |
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JP2003403891 | 2003-12-03 | ||
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JP2004-235697 | 2004-08-13 |
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US10/581,448 A-371-Of-International US7763335B2 (en) | 2003-12-03 | 2004-12-01 | Gas barrier layered product and packaging medium, and method for producing gas barrier layered product |
US12/768,485 Continuation US8039071B2 (en) | 2003-12-03 | 2010-04-27 | Gas barrier layered product and packaging medium, and method for producing gas barrier layered product |
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US (2) | US7763335B2 (ja) |
EP (1) | EP1690678B1 (ja) |
JP (1) | JP4365826B2 (ja) |
KR (1) | KR101044904B1 (ja) |
AU (1) | AU2004294417B2 (ja) |
CA (1) | CA2547567C (ja) |
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Also Published As
Publication number | Publication date |
---|---|
JPWO2005053954A1 (ja) | 2007-12-06 |
EP1690678A4 (en) | 2010-05-26 |
US20100209639A1 (en) | 2010-08-19 |
CA2547567C (en) | 2013-07-02 |
US8039071B2 (en) | 2011-10-18 |
AU2004294417B2 (en) | 2009-12-10 |
AU2004294417A1 (en) | 2005-06-16 |
US20070111005A1 (en) | 2007-05-17 |
KR101044904B1 (ko) | 2011-06-28 |
CA2547567A1 (en) | 2005-06-16 |
JP4365826B2 (ja) | 2009-11-18 |
EP1690678A1 (en) | 2006-08-16 |
US7763335B2 (en) | 2010-07-27 |
ES2595513T3 (es) | 2016-12-30 |
EP1690678B1 (en) | 2016-09-14 |
KR20060113937A (ko) | 2006-11-03 |
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