WO1997033940A1 - Composition et poudre d'elastomere thermoplastique et article moule obtenu - Google Patents
Composition et poudre d'elastomere thermoplastique et article moule obtenu Download PDFInfo
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- WO1997033940A1 WO1997033940A1 PCT/JP1997/000794 JP9700794W WO9733940A1 WO 1997033940 A1 WO1997033940 A1 WO 1997033940A1 JP 9700794 W JP9700794 W JP 9700794W WO 9733940 A1 WO9733940 A1 WO 9733940A1
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- WIPO (PCT)
- Prior art keywords
- ethylene
- thermoplastic elastomer
- copolymer rubber
- elastomer composition
- powder
- Prior art date
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- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 235000011182 sodium carbonates Nutrition 0.000 description 1
- 239000001589 sorbitan tristearate Substances 0.000 description 1
- 235000011078 sorbitan tristearate Nutrition 0.000 description 1
- 229960004129 sorbitan tristearate Drugs 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 150000003608 titanium Chemical class 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- ZWYDDDAMNQQZHD-UHFFFAOYSA-L titanium(ii) chloride Chemical compound [Cl-].[Cl-].[Ti+2] ZWYDDDAMNQQZHD-UHFFFAOYSA-L 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 150000003754 zirconium Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Ethene-propene or ethene-propene-diene copolymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
-
- 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]
- Y10T428/31855—Of addition polymer from unsaturated monomers
-
- 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]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31938—Polymer of monoethylenically unsaturated hydrocarbon
Definitions
- the present invention relates to a thermoplastic elastomer composition, and a powder and a molded article comprising the same.
- a sheet-like molded body having a complex uneven pattern such as leather spots and stitches on its surface has been used as a skin material for automobile interior parts and the like.
- a molded product of a thermoplastic elastomer has been proposed as an alternative to a conventional molded product of a vinyl chloride resin (for example, see Japanese Patent Application Laid-Open No. H05-001183, (See Japanese Unexamined Patent Publication No. 5-50050).
- the molded article of such a thermoplastic elastomer has poor flexibility as compared with a molded article of a vinyl chloride resin, and tends to whiten when bent. Therefore, when the molded body is taken out of the mold during the production of the molded body.
- the bent portion of the molded body becomes white. Almost. Therefore, a molded body of a thermoplastic elastomer is desired, which is hardly whitened even when bent.
- thermoplastic elastomer that gives a molded article of a thermoplastic elastomer that is not easily whitened even when bent.
- thermoplastic elastomer composition containing a polyolefin resin and a specific ethylene-hydroxy-olefin copolymer rubber at a specific ratio gives a molded article that is difficult to whiten, and completed the present invention. did.
- the present invention relates to a polyolefin resin having 100 parts by weight of (a) a polyolefin resin, 5 to 250 parts by weight of (b) one-year-old olefin unit content of 50% by weight or more.
- a polyolefin resin having 100 parts by weight of (a) a polyolefin resin, 5 to 250 parts by weight of (b) one-year-old olefin unit content of 50% by weight or more.
- Certain ethylene '' olefin copolymer rubber, and ethylene-only olefin copolymer having 0 to 500 parts by weight of (c) less than 50% by weight of olefin unit A thermoplastic elastomer composition containing rubber is provided.
- the present invention provides a powder comprising the thermoplastic elastomer composition, having a sphere-equivalent average particle diameter of 1.2 mm or less and a bulk specific gravity of 0.38 or more.
- a powder can be used in a powder molding method, and can provide a molded body that is free from binholes and underfills, and that is flexible and hard to whiten even when bent.
- the present invention provides A molded article comprising the thermoplastic elastomer composition is provided. The molded article of the present invention is hardly whitened even when bent.
- FIG. 1 is a schematic diagram of a molding apparatus for powder molding. This apparatus is provided with a container (2) for containing a powder (3) of a thermoplastic elastomer composition, and a mold (1) for forming a powder slush.
- FIG. 2 is a plan view from the molding surface side of a mold for powder slush molding.
- FIG. 3 is a cross-sectional view of a molded body manufactured using the mold of FIG.
- thermoplastic elastomer composition of the present invention has a content of 100 parts by weight of (a) a polyolefin resin, and 5 to 250 parts by weight of (b) a monoolefin unit content of 50% by weight or more. It contains a certain ethylene 'olefin copolymer rubber and 0 to 500 parts by weight of (c) an ethylene thioolefin copolymer rubber having a cr-one-year-old fin unit content of less than 50% by weight. .
- the (a) polyolefin-based resin is at least one kind selected from one or more kinds of olefin polymers or copolymers having crystallinity.
- the olefin include ethylene, propylene, 1-butene, 1-hexene, 1-octene, and other olefins having 2 to 8 carbon atoms.
- the polyolefin-based resin include polyethylene, polypropylene, polybutene-11, and copolymers of propylene with other ⁇ -olefins (eg, 1-butene).
- thermoplastic elastomer composition of the present invention provides a molded article having particularly excellent flexibility. Can be. In two or more stages, it is also possible to use a copolymer obtained by copolymerizing two or more types of monomers selected from len and one-year-old fins having 3 to 8 carbon atoms. For example, it is possible to use a copolymer obtained by homopolymerizing propylene in the first step and copolymerizing propylene with one-year-old olefin other than ethylene or propylene in the second step.
- melt flow rate (MFR) measured at 230 ° C and a load of 2.16 kgf according to 210 is usually 20 to 500 g / 10 min, preferably 50 to 3 It is within the range of 0 gZlO.
- the (b) ethylene'polyolefin copolymer rubber has at least 50% by weight or more of a unitary olefin unit, and is selected from non-crystalline ethylene-polyolefin copolymers.
- the olefin is a olefin having 3 to 8 carbon atoms, such as propylene, 1-butene, 1-hexene, and 1-octene, and is preferably a olefin having 4 to 8 carbon atoms. Holefin having a number of 4 to 6 is particularly preferred.
- the content of the unitary olefin unit in the ethylene-thiorefined copolymer rubber is preferably 50 to 90% by weight, more preferably 60 to 90% by weight.
- ethylene-diol copolymer rubber dicyclopentene diene, 2-methyl-2,5-norbornadiene, 5-ethylidene-2-norpolonene, 1,4-hexadiene, 1,6 —
- the group compound may be copolymerized.
- the content of the olefin units is determined by the beaks derived from the olefin units determined by infrared absorption spectroscopy (for example, symmetric bending vibration of the terminal methyl group of the short-chain branch, or the methylene group in the branch). (Beak of the side-to-side vibration).
- infrared absorption spectroscopy for example, symmetric bending vibration of the terminal methyl group of the short-chain branch, or the methylene group in the branch.
- Beak of the side-to-side vibration For the method of measuring the content of this unit, see, for example, Reference 1 “Polymer Analysis Handbook, published by Kinokuniya Bookstore, The Japan Society for Analytical Chemistry” Ed., Chapter 2, Section 2.2 (pp. 587-591, pp.
- Ethylene-hydroolefin copolymer rubber is disclosed in, for example,
- ethylene and ⁇ -olefin and, if necessary, other monomers are mixed with a metal complex in the presence of a cocatalyst.
- a cocatalyst can be produced by a method of polymerizing using as an initiator.
- the co-catalyst include aluminum compounds such as methylaluminoxane, aluminum halide, aluminum alkyl halide, and trialkylaluminum; tris (benzoyl fluorophenyl) borane; triphenylcarbenyltetrax (pennite); Includes Lewis acids containing boron, such as fluorophenyl) porane.
- One type of compound may be used as a cocatalyst, or two or more types of compounds may be used in combination.
- metal complexes (tert butylamine de) dimethyl (7 5 -? Shikuropen evening Jeniru) silane zirconium dichloride Rye Donado zirconium complexes, (tert butylamine de) dimethyl (tetramethyl -5 - Shikuropen evening Jeniru) Shiranchi evening includes titanium complexes such as dichloride, (anilide), (dimethyl) (tetramethyl-7? 5 -cyclopentagenenyl), and silanine dichloride.
- the polymerization of ethylene and hyolefin is usually carried out in a solvent.
- a solvent for example, a hydrocarbon solvent such as hexane, heptane, toluene, ethylbenzene and xylene is used.
- the polymerization can be performed under an atmospheric pressure or a reduced pressure in an atmosphere of an inert gas such as nitrogen, argon, or hydrogen.
- the polymerization temperature is usually in the range from 130 to 250 ° C.
- the content of the (b) ethylene-vinyl olefin copolymer rubber is preferably 5 to 250 parts by weight per 100 parts by weight of the (a) polyolefin resin. , Preferably 20 to 250 parts by weight, more preferably 50 to 250 parts by weight. Parts by weight, more preferably 80 to 220 parts by weight.
- thermoplastic elastomer composition of the present invention contains the following (a) 100 parts by weight of the polyolefin-based resin and 500 parts by weight or less of (c) an ethylene-vinyl olefin copolymer rubber.
- c thermoplastic elastomer first composition which may contain the copolymer rubber (c)
- improvements in low-temperature resistance of a molded article obtained by using the (low-temperature impact resistance) is provided.
- Ethylene / 1-year-old olefin copolymer rubber is a non-crystalline ethylene / 1-year-old olefin copolymer containing less than 50% by weight of a one-year-old olefin unit. At least one selected from the group consisting of ethylene-co-olefin and non-conjugated gen copolymer.
- Preferred olefins are olefins having from 3 to 10 carbon atoms, such as propylene, 1-butene, 3-methyl-pentene-11,1-octene and 1-decene. Butene is preferred.
- ethylene-polyolefin copolymer rubbers include ethylene-propylene copolymer rubber, ethylene / 1-butene copolymer rubber, and ethylene 'propylene' ethylidene norporene copolymer rubber.
- EPDM ethylene-propylene copolymer rubber, ethylene / 1-butene copolymer rubber, and ethylene 'propylene' ethylidene norporene copolymer rubber.
- the thermoplastic elastomer composition of the present invention containing EPDM can give a molded article having particularly excellent heat resistance and tensile properties.
- the content of the unit of single olefin in the ethylene-unique olefin copolymer rubber is preferably in the range of 5 to 40% by weight, more preferably 10 to 35% by weight. The content is usually 60 to 95% by weight, preferably 65 to 90% by weight.
- the content of the olefin unit and the ethylene unit is 13 It can be determined by the C-NMR method or infrared absorption spectroscopy.
- the (c) ethylene-hydrogen olefin-based 100 in accordance with ASTMD-927-57T of copolymer rubber is preferably in the range of 10 to 350, more preferably 15 to 300.
- the content of (c) the ethylene-dilute olefin copolymer rubber is as follows: (a) 100 to 100 parts by weight of the polyolefin resin, usually 0 to 500 parts by weight. It is preferably from 5 to 400 parts by weight, more preferably from 10 to 250 parts by weight, from the viewpoint of cold resistance (low-temperature impact resistance) of the obtained molded article. is there.
- the (a) polyolefin resin, (b) ethylene- ⁇ -olefin copolymer rubber and (c) ethylene-one-olefin refin copolymer rubber may be cross-linked within and / or between molecules. That is, (a) the polyolefin-based resin may be cross-linked intramolecularly and / or intermolecularly, and (b) the ethylene-one-year-old olefin-based copolymer rubber is crosslinked intramolecularly and cross-linked between molecules.
- the ethylene-hyorefin-based copolymer rubber may be cross-linked intramolecularly and / or intermolecularly, or (a) polyolefin-based resin and (b) ethylene- (A) Polyolefin resin and (c) Ethylene '' copolymer, or (b) Ethylene / Hyolefin copolymer and (c) Ethylene.
- the olefin copolymer may be cross-linked between molecules.
- the cross-linking of (a) a polyolefin resin and (c) an ethylene / polyolefin copolymer rubber is carried out, for example, by (a) polyolefin resin and (c) ethylene / ⁇ -olefin copolymer.
- the kneading can be carried out by kneading the combined rubber and subjecting the kneaded mixture to a dynamic bridge.
- the dynamic crosslinking of the kneaded mixture can be performed, for example, by kneading the kneaded mixture and a crosslinking agent under heating.
- a crosslinking agent usually, 2,5-dimethyl-2,5-di (tert-butylperoxino) hexane, dicumylbenzoxa Organic peroxides such as sulfides are used.
- the crosslinking agent is a total of 10% of (a) a polyolefin-based resin, (b) ethylene- ⁇ -olefin-based copolymer rubber, and (c) ethylene-one-liter olefin-based copolymer rubber.
- thermoplastic elastomer composition that gives a molded article having excellent heat resistance can be obtained by performing dynamic crosslinking in the presence of a crosslinking auxiliary such as a vismaleimide compound. Obtainable.
- the amount of the organic peroxide to be used depends on the amount of (a) polyolefin resin, (b) ethylene / thioolefin copolymer rubber, and (c) ethylene / thioolefin copolymer rubber to be crosslinked.
- the total amount is usually up to 0.8 part by weight, preferably from 0.2 to 0.8 part by weight, more preferably from 0.4 to 0.6 part by weight, per 100 parts by weight.
- the amount of the crosslinking aid used is the total of 100% of (a) polyolefin resin, (b) ethylene-co-olefin copolymer rubber and (c) ethylene-co-olefin copolymer rubber to be cross-linked.
- the amount is usually 1.5 parts by weight or less, preferably 0.2 to 1 part by weight, more preferably 0.4 to 0.8 part by weight per part by weight.
- the crosslinking aid is preferably added before the addition of the crosslinking agent, and is usually added when kneading the components (a), (b) and (c) to be crosslinked.
- the cross-linking of (a) polyolefin resin (b) ethylene-co-olefin copolymer rubber and (c) ethylene-co-olefin copolymer rubber is performed by cross-linking these components, cross-linking agent, and if necessary
- the auxiliary agent can be kneaded with a single-screw extruder or a twin-screw extruder while heating.
- the (b) ethylene-hyorefin-based copolymer rubber and (c) the ethylene-hyo-refin-based copolymer rubber are usually preferentially intramolecularly and / or intermolecularly.
- thermoplastic elastomer composition of the present invention can include a crosslinked product of any of the eves.
- the thermoplastic elastomer composition of the present invention may contain various additives in addition to the above main components.
- the additives include mineral oil-based softeners such as paraffin-based process oils, phenol-based, sulfite-based, phenylalkane-based, phosphite-based, amine-based or amide-based heat stabilizers, antioxidants, Weathering stabilizers, antistatic agents, lubricants such as metal stones and waxes, internally added mold release agents such as methylpolysiloxane compounds, coloring pigments, fillers, foaming agents, foaming aids, cell conditioning agents, etc. No.
- the mineral oil-based softener improves the melt fluidity of the thermoplastic elastomer composition of the present invention, and the thermoplastic elastomer composition containing the same provides a molded article having excellent flexibility. It is preferable because it can be done.
- a composition comprising this mineral oil-based softening agent and the above-mentioned (c) ethylene-one-year-old olefin-based copolymer rubber, so-called oil-extended ethylene '
- the use of the Hi-Iseki olefin copolymer rubber can provide excellent processability in kneading and dynamic crosslinking.
- the content of the mineral oil-based softening agent in the oil-extended ethylene / hydroolefin olefin copolymer rubber is as follows: (C) 100 weight parts of the ethylene / hydroolefin copolymer rubber, usually 1% by weight. 20 parts by weight or less, preferably in the range of 30 to 120 parts by weight c
- thermoplastic elastomer composition of the present invention may comprise natural rubber, butyl rubber, chloroprene rubber, acrylonitrile 'butene-gene rubber, hydrogenated acrylonitrile' butadiene rubber, ebichlorohydrin rubber, as long as the effects of the present invention are not impaired.
- Rubber polymers such as acryl rubber, ethylene acrylic acid copolymer, ethylene / vinyl acetate copolymer and saponified products thereof, ethylene / methyl methacrylate copolymer, ethylene / glycidyl methacrylate / vinyl acetate copolymer
- the thermoplastic elastomer composition of the present invention may have various ranges of viscoelasticity depending on the molding conditions of the composition.
- Complex dynamic viscosity 77 * measured at a vibration frequency omega 1 Rajian'no sec at C (1), from the viewpoint of molding processability of the composition, it is preferred properly 1.
- the lower limit of 77 * (1) is usually 1 ⁇ 10 2 voices, preferably 3 ⁇ 10 2 voices, and more preferably 5 ⁇ 10 2 voices.
- the complex dynamic viscosity * ( ⁇ ) measured at 250 ° C at the vibration frequency ⁇ is the storage viscoelasticity G ′ ( ⁇ ) and the loss viscoelasticity G measured at the vibration frequency ⁇ at 250 ° C.
- Viscosity ?? * (1) is preferably 5 ⁇ 10 4 voids or less, more preferably 1 ⁇ 10 2 to 3 ⁇ 10 3 voids, from the viewpoint of processability of the thermoplastic elastomer composition, and is particularly preferable. Preferably it is in the range of 3x10 2 to 2x10 3 voices. Further, the Newton's viscosity index n is preferably 0.28 or less, more preferably 0.01 to 0.25, particularly preferably 0. . 0 It is in the range of 3 to 0.20.
- thermoplastic elastomer composition of the present invention includes, for example, (a) a polyolefin resin,
- thermoplastic elastomer composition of the present invention in which (a) a polyolefin-based resin and / or (c) ethylene-cr-one-year-old olefin-based copolymer rubber is crosslinked intra- and / or intermolecularly.
- the product is usually (a) polyolefin resin
- It can be produced by dynamically cross-linking (c) an ethylene-polyolefin copolymer rubber, and further adding (b) an ethylene-polyolefin copolymer rubber and kneading the resulting mixture.
- a single-screw extruder or a twin-screw extruder can be used for kneading (b) the ethylene / a-olefin copolymer rubber.
- dynamically cross-linking a mixture of (a) a polyolefin-based resin, (b) an ethylene-only-olefin-based copolymer rubber, and (c) an ethylene'-one-olefin-based copolymer rubber.
- thermoplastic elastomer yarn of the present invention can be produced.
- the thermoplastic elastomer composition of the present invention can be obtained as a melt-kneaded product.
- the various additives can be prepared, for example, by adding (a) a polyolefin resin, (b) ethylene-one-year-old olefin copolymer rubber or (c) ethylene It can be carried out by using a hypoolefin-based copolymer rubber or blending the above components (a), (b) and (c) during kneading or dynamic crosslinking.
- thermoplastic elastomer composition of the present invention can be processed into molded articles of various sizes and shapes by various molding methods.
- the molded article obtained from the thermoplastic elastomer composition of the present invention has a feature that it is not easily whitened even when bent.
- the thermoplastic elastomer composition of the present invention can be molded from its melt, for example, the above-mentioned melt-kneaded product, into various molded articles by, for example, a breath molding method, an injection molding method, or an extrusion molding method. You.
- the shape and size of the compact are particularly limited Absent.
- thermoplastic elastomer composition of the present invention can be processed into powders of various sizes and shapes, and can be processed into a molded product such as a sheet or a film by a powder molding method using the powder. it can.
- the sphere-equivalent average particle diameter of the powder is preferably 1.2 mm or less, more preferably 0.15 to 1.0, from the viewpoint of ease of thermal fusion between the particles during powder molding. mm range. If the particles are not sufficiently heat-sealed, binholes or underfilling are likely to occur in the molded product.
- the bulk specific gravity is preferably 0.38 or more, more preferably 0.38 to 0.65, from the viewpoint of easy adhesion of the powder to the mold surface during powder molding. Particularly preferably, it is in the range of 0.42 to 0.65. If the powder does not adhere sufficiently to the mold surface, the molded product is likely to have bin holes and underfill.
- the spherical average particle diameter of the powder is defined as the diameter of a sphere having the same volume as the average volume of the powder.
- the average volume (V) of the powder was determined by calculating the total weight (W) of the powder of 100 thermoplastic elastomer compositions randomly taken out, the density (D) of the thermoplastic elastomer composition, and the average volume (V). The following equation for V):
- V W / D
- the bulk specific gravity of the powder is defined and measured according to JISK-6721.
- the powder as described above can be produced by various methods as described below.
- Frozen powder ⁇ thermal plasticity elastomer first composition below its glass transition temperature (typically one 70 ° C or less, preferably one 90 e C below) was cooled to and Kona ⁇ .
- Solvent treatment method The powder produced by the above-mentioned freeze pulverization method is used to melt the thermoplastic elastomer composition in the presence of a dispersing agent and an emulsifier with a solvent having poor compatibility with the thermoplastic elastomer composition. temperature or higher, preferably after stirring at 30 to 5 0 e C higher temperature than the melting temperature, cooling (for example, see JP Sho 62- 280226). By this method, a spherical powder can be obtained.
- Strand cutting method A molten thermoplastic elastomer composition is extruded from a die into the air to form a strand, which is cooled and cut (for example, Japanese Patent Publication No. 50-1494974). See).
- Die-face cutting method A molten thermoplastic elastomer composition is cut from a die while being extruded into water.
- ethylene glycol, polyethylene glycol, polypropylene glycol, etc. is usually 300 to 100 parts by weight per 100 parts by weight of the thermoplastic elastomer composition. It is preferably used in the range of 400 to 800 parts by weight.
- dispersant for example, ethylene-acrylic acid copolymer, citric anhydride, titanium oxide, etc.
- the emulsifier include polyoxyethylene sorbitan monolaurate, polyethylene glycol monolaurate, and sorbitan tristearate, etc.
- the discharge port of the die is usually in the range of 0.1 to 3 mm, preferably in the range of 0.2 to 2 mm. It is in.
- the discharge rate of the thermoplastic elastomer composition per discharge port of the die is usually in the range of 0.1 to 5 kgZ, preferably in the range of 0.5 to 3 kgZ.
- the take-off speed of the strand is usually in the range from 1 to 100 m />, preferably in the range from 5 to 50 m / min.
- the cooled strand is usually cut to 1.4 mm or less, preferably to 0.3 to 1.2 nun.
- the discharge diameter of the die is usually in the range of 0 ⁇ l to 3 nn, preferably in the range of 0.2 to 2 mm.
- the discharge rate of the thermoplastic elastomer composition per discharge port of the die is usually in the range of 0.1 to 5 kgZ, preferably in the range of 0.5 to 3 kgZ.
- the temperature of the water is usually 30 to 70 ° C, preferably 40 to 60. It is in the range of C.
- the powder produced by the above-mentioned solvent treatment method, strand cutting method and die cut method may be referred to as pellet.
- the powder of the thermoplastic elastomer composition can be applied to various powder molding methods such as a powder slush molding method, a fluid immersion method, an electrostatic coating method, a powder spraying method, and a powder rotational molding method.
- the powder slush molding method is performed as follows. First, the powder of the thermoplastic elastomer first composition, the melting temperature or higher of the composition, usually 1 6 0 to 3 0 0 C, preferably formed of 2 1 0 ⁇ 2 7 0 e die heated to C Supply on form. The powder is heated on the molding surface for a predetermined period of time, and the powders whose surfaces have at least been fused are fused together. After the lapse of the predetermined time, the unfused powder is recovered.
- the mold containing the molten thermoplastic elastomer composition is further heated. Thereafter, the mold is cooled, and the sheet formed thereon is removed from the mold.
- the mold is heated by, for example, a gas heating furnace method, a heating medium oil circulation method, a dipping method in heating medium oil or hot fluidized sand, a high-frequency induction heating method, or the like.
- the heating time for heat-sealing the particles of the thermoplastic elastomer composition is appropriately selected according to the size and thickness of the target molded product.
- the molded article of the present invention obtained from the thermoplastic elastomer composition of the present invention is characterized by being rich in flexibility and hardly whitened even when bent.
- thermoplastic elastomer composition of the present invention containing a foaming agent is excellent in flexibility by various molding methods such as a powder molding method, a breath molding method, an extrusion molding method and an injection molding method.
- a foamed molded article can be manufactured.
- a foamed molded article can be produced by powder-forming a powder of the thermoplastic elastomer of the present invention containing a foaming agent, and further foaming the powder.
- a pyrolytic foaming agent As the foaming agent, a pyrolytic foaming agent is usually used.
- pyrolytic foaming agents include azodicarbonamide, azo compounds such as 2,2,2′-bisisobutyronitrile, diazodiaminobenzene, benzenesulfonylhydrazide, benzene-1,3 - sulfonyl hydrazide, sulfonyl hydrazide compounds such as p- toluenesulfonyl hydrazinium de, New 'over dinitrosopentamethylene methylene tetramine, New, N' one Jinitoroso New, New 5 over dimethyl terephthalate Ami de of any nitroso compounds, such as terephthalic azide Azide compounds, sodium bicarbonate And carbonates such as ammonium bicarbonate and ammonium bicarbonate.
- thermoplastic elastomer composition of the present invention may contain a foaming aid and a cell conditioner together with the foaming agent. It should be noted that a similar foam can be obtained by performing powder molding using a mixed powder containing a powder of the thermoplastic elastomer composition of the present invention containing no foaming agent and a foaming agent.
- the molded article obtained from the thermoplastic elastomer composition of the present invention can form a two-layer molded article by, for example, laminating a foam.
- a two-layered molded article can be produced, for example, by a powder molding method as disclosed in JP-A-5-4733, and the thermoplastic elastomer composition of the present invention which is produced separately. It can also be manufactured by a method of bonding a molded article made of a product and a foam with an adhesive or the like.
- a layer made of the thermoplastic elastomer composition of the present invention containing no foaming agent is formed on the molding surface of the powder molding die according to the method described above.
- a powder of a composition containing a foaming agent and a thermoplastic resin (or a thermoplastic elastomer) is further supplied thereon, and the powders are thermally fused to form a new layer. It can be produced by foaming a layer of the composition containing the agent.
- a composite molded article having a configuration of non-foaming layer / foaming layer / non-foaming layer can be produced by a similar method.
- the two non-foamed layers may be the same or different.
- the same pyrolytic foaming agent as described above can be used as the foaming agent used in the production of the above-described two-layer molded article and composite molded article.
- thermoplastic resin or the thermoplastic elastomer contained in the composition containing the foaming agent examples include a vinyl chloride resin, a polyolefin resin, and an olefin thermoplastic elastomer.
- a polyethylene foamable composition disclosed in JP-A-7-228720 can be used as the composition containing the foaming agent.
- the foamed layer may be made of foamed polyurethane.
- the thermoplastic elastomer composition of the present invention and the polyurethane generally have an adhesive property. Usually, it is preferable to improve the adhesion by pre-treating the surface of the thermoplastic elastomer composition of the present invention with a primer such as chlorinated polyethylene.
- the foamed layer made of the foamed polyurethane is, for example, a mixture of a polyol, a polyisocyanate, and a foaming agent between a molded article made of the thermoplastic elastomer composition of the present invention and a resin core material described below. It can be formed by supplying and foaming.
- a molded article comprising the thermoplastic elastomer composition of the present invention described above, or a composite molded article comprising a layer of the thermoplastic elastomer composition of the present invention and a foamed layer is a resin molded article (resin core). It can be used as a skin material to form a multilayer molded body.
- a sheet (skin material) comprising the thermoplastic elastomer composition of the present invention can be bonded to a resin core material to form a two-layer molded article, and a layer of the thermoplastic elastomer composition of the present invention can be formed.
- a two-layer molded body (two-layer skin material) composed of a foam layer and a foam layer can be bonded to the resin core material on the foam layer side to form a three-layer molded body.
- the resin constituting the resin core material include a polyolefin resin such as polyethylene and polypropylene, and a thermoplastic resin such as an ABS resin (acrylonitrile-butadiene-styrene copolymer resin). Among them, polyolefin resins such as polypropylene are preferably used.
- the multilayer molded body as described above can be manufactured, for example, by supplying a molten resin to one side of the skin material and applying pressure.
- the pressurization may be started after the completion of the supply of the resin, may be started before the completion of the supply of the resin, and may be continued until the completion of the supply of the resin. Further, the above-mentioned pressurization may be performed by clamping the molding apparatus, or may be performed by a tree supply pressure.
- Various methods such as an injection molding method, a low-pressure injection molding method, and a low-pressure compression molding method can be applied to the production of the multilayer molded body as described above.
- a molding apparatus including a pair of first and second mold members that can relatively freely move between an open position and a closed position, the first and second mold members in the uncovered position are used.
- a skin material including a layer made of the thermoplastic elastomer composition of the present invention is supplied between the mold members, and then a molten resin is supplied between the skin material and one of the mold members. I do.
- Supply resin After or while supplying, the first and second mold members are relatively moved to compress the skin material and the resin, whereby a multilayer molded body can be manufactured.
- the space between the foam layer of the skin material and the mold member opposed thereto is used.
- the supply of the resin between the skin material and the mold member can be performed, for example, from a resin passage provided in the mold member, or provided outside the molding device. It is also possible to insert the resin supply nozzle of the resin supply device between the skin material and the mold member to supply the resin, and then to withdraw the resin supply nozzle.
- the direction of movement of the first and second mold members is not particularly limited, and may be, for example, a vertical direction or a horizontal direction.
- the position of the skin material is less displaced compared to the injection molding method in which the molten thermoplastic resin is supplied while the first and second mold members are held in the closed positions, and This is more preferable because damage to the skin material can be avoided.
- the mold used in the powder molding can be applied as a mold member for producing a multilayer molded body.
- a mold for powder molding is attached to the first mold member while the skin material formed by powder molding is held on the molding surface, and thereafter, By performing the same operation as above, a multilayer molded body can be obtained! ⁇ It is built. According to this method, it is possible to manufacture a multilayer molded body without substantially impairing the pattern formed on the surface of the skin material by the powder molding.
- the pair of mold members may be, for example, a so-called pair of male and female mold members in which the outer peripheral surface of the first mold member and the inner peripheral surface of the second mold member can slide.
- a multilayer molded body having an extra skin material at the end is manufactured. be able to.
- a multilayer molded body whose end is covered with the skin material can be manufactured.
- thermoplastic elastomer composition of the present invention can provide a molded article having excellent flexibility which does not easily whiten even when bent.
- the ethylene '1-butene copolymer rubber was heated to a temperature equal to or higher than its melting temperature and breathed to produce a film having a thickness of 0.05 ⁇ .
- the absorbance ratio between the ethylene unit-derived beak and the 1-butene unit-derived beak was determined for this film, and using a calibration curve, the content of 11-butene units in the ethylene / 1-butene copolymer rubber was determined. The amount was determined.
- thermoplastic elastomer powder The bulk specific gravity of the thermoplastic elastomer powder was determined in accordance with JIS K-67271.
- a load of 500 gf or 1 kgf is applied to the compact bent at the center for 1 minute, then the load is removed, and the whitening state of the bent portion of the compact is visually evaluated according to the following criteria. did.
- An ethylene 1-butene copolymer rubber was produced in the same manner as in Reference Example 2 except that the 1-butene gas supply rate, the polymerization temperature, and the polymerization time were changed as shown in Table 1.
- Table 1 shows the results of the evaluation of each of the ethylene 1-butene copolymer rubbers.
- thermoplastic elastomer composition 100 parts by weight of the composition produced in Reference Example 1 and the ethylene.
- 1-butene copolymer rubber five-fold S part produced in Reference Example 2 were mixed with each other using a twin-screw kneader to obtain 190 parts by weight.
- the mixture was kneaded at ° C to obtain a melt-kneaded product of the thermoplastic elastomer composition.
- the resulting melt-kneaded material was subjected to breath forming to obtain a sheet having a thickness of 1 mm.
- Table 2 shows the evaluation results of the thermoplastic elastomer composition subjected to molding and the obtained sheet.
- thermoplastic elastomer composition and sheet were produced in the same manner as in Example 1 except that the amount of the ethylene / 1-butene copolymer rubber was changed to 10 parts by weight.
- Table 2 shows the evaluation results of the thermoplastic elastomer composition and the sheet.
- thermoplastic elastomer composition and sheet were produced in the same manner as in Example 1 except that the amount of the ethylene / 1-butene copolymer rubber was changed to 20 parts by weight.
- Table 2 shows the evaluation results of the thermoplastic elastomer composition and the sheet.
- Example 1 was repeated except that 10 parts by weight of the ethylene / 1-butene copolymer rubber produced in Reference Example 3 was used instead of 5 parts by weight of the ethylene / 1-butene copolymer rubber produced in Reference Example 2. Similarly, a thermoplastic elastomer composition and a sheet were produced. Table 2 shows the evaluation results of the thermoplastic elastomer composition and the sheet.
- thermoplastic elastomer composition and sheet were produced in the same manner as in Example 4, except that 20 parts by weight of the ethylene / 1-butene copolymer rubber produced in Reference Example 3 was used. Table 2 shows the evaluation results of the thermoplastic elastomer composition and the sheet.
- Example 1 was repeated except that 10 parts by weight of the ethylene / 1-butene copolymer rubber produced in Reference Example 4 was used instead of 5 parts by weight of the ethylene-1 butene copolymer rubber produced in Reference Example 2.
- a thermoplastic elastomer composition and a sheet were produced in the same manner as described above. Table 2 shows the evaluation results of the thermoplastic elastomer composition and the sheet.
- thermoplastic elastomer composition and sheet were produced in the same manner as in Example 6, except that 20 parts by weight of the ethylene 1-butene copolymer rubber produced in Reference Example 4 was used.
- C Comparative Example 1 shown thermoplastic elastomer first composition and Hyo ⁇ result of the sheet in Table 2
- Example 1 was repeated except that 10 parts by weight of the ethylene / 1-butene copolymer rubber produced in Reference Example 5 was used instead of 5 parts by weight of the ethylene / 1-butene copolymer rubber produced in Reference Example 2. Similarly, a thermoplastic elastomer composition and a sheet were produced. Table 2 shows the evaluation results of the thermoplastic elastomer composition and the sheet. Comparative Example 2
- Example 1 except that 10 parts by weight of the ethylene / 1-butene copolymer rubber produced in Reference Example 6 was used instead of 5 parts by weight of the ethylene / 1-butene copolymer rubber produced in Reference Example 2.
- a thermoplastic elastomer composition and a sheet were produced in the same manner as described above. Table 2 shows the evaluation results of the thermoplastic elastomer composition and the sheet.
- thermoplastic elastomer composition and a sheet were produced in the same manner as in Example 6, except that 20 parts by weight of the ethylene-1 butene copolymer rubber produced in Reference Example 6 was used.
- Table 2 shows the evaluation results of the thermoplastic elastomer composition and the sheet.
- thermoplastic elastomer composition 100 parts by weight of the composition thus obtained and 66.7 parts by weight of the ethylene / 1-butene copolymer rubber produced in Reference Example 3 were used. The resulting mixture was kneaded with C to obtain a molten thermoplastic elastomer composition, which was then breath-formed to produce a sheet having a thickness of 1 mm. Table 2 shows the evaluation results of the obtained thermoplastic elastomer composition and sheet.
- Comparative Example 1 40 20 1.3X10 4 0.45
- Compounding amount Compounding amount per 100 parts by weight of ethylene / propylene random copolymer resin
- thermoplastic elastomer composition was produced in the same manner as in Example 3, and this was processed into pellets (diameter 3 mm, length 6 mm) using a pelletizer. The pellet was cooled to ⁇ 120 ° C. and further pulverized by a freeze pulverizer to obtain a powder of a thermoplastic elastomer composition. The average sphere-equivalent particle size of the powder was 0.20 mm, and the bulk specific gravity was 0.32.
- Nickel electrodeposition ⁇ type having a grain pattern on the molding surface (30 mmx 30 mm, thickness 3 mm) was heated to 250 ° C, the c 14 seconds after sprinkling the powder 1 kg obtained above on its molding surface
- the unfused powder was removed, and the mold carrying the fused thermoplastic elastomer composition was heated in a 250 ° C. oven for 60 seconds. Thereafter, the mold was taken out of the heating furnace and cooled, and the formed compact was removed from the mold.
- This molded product had a uniform thickness and no binhole.
- Table 3 shows the evaluation results.
- thermoplastic elastomer composition In the same manner as in Example 9 except that the ethylene'1-1-hexene copolymer rubber produced in Reference 7 was used instead of the ethylene * 1-butene copolymer rubber produced in Reference Example 2, A plastic elastomer composition and sheet were produced. Table 3 shows the evaluation results of the obtained thermoplastic elastomer composition and sheet. Of the thermoplastic E elastomer composition? 7 * (1) 1.2 XI 0 3 Boyes, n represents was 0.1 5. Table 3
- thermoplastic elastomer composition a powder of a thermoplastic elastomer composition.
- the powder had an average sphere-equivalent particle size of 0.20 mm and a bulk specific gravity of 0.33.
- a nickel metal mold (30 mm ⁇ 30 mm, thickness 3 mm) having a grain pattern on a molding surface was heated to 250 ′′ C, and 1 kg of the powder obtained above was sprinkled on the molding surface.
- Example I 3 shows the evaluation results of the obtained molded bodies.
- thermoplastic elastomer composition in which 7 * (1) was 3 ⁇ 10 2 voids and ⁇ was 0.04 was obtained in the same manner as in Example 11 except that it was used.
- a powder of this composition was prepared in the same manner as in Example 11, and a molded article was produced. Table 4 shows the evaluation results of the obtained molded bodies.
- Cross-linking assistant (Sumitomo Chemical Co., Ltd., Sumifine BM, bismaleide compound) and kneading for 10 minutes using a Banbury mixer, and the kneaded composition is pelletized using an extruder and a pelletizer. (Diameter 3 mm, length 6 mm). 100 parts by weight of this pellet and 0.4 parts by weight of 2,3-dimethyl-2,5-di (tert-butylperoxino) hexane (Sanvelox AP O) manufactured by Sanken Kako Co., Ltd.
- a molded article was produced in the same manner as in Example 11 except that the powder obtained above was used.
- Table 4 shows the evaluation results of the obtained molded bodies.
- thermoplastic elastomer composition obtained by kneading has a? 7 *
- the powder obtained above was subjected to powder slush molding using a molding apparatus whose schematic diagram is shown in FIG.
- the powder (3) obtained above is supplied into a container (2), and then, as shown in FIG. 1, the container (2) and the mold (1) are placed around the periphery of each opening. Were fixed so that they adhered to each other.
- the mold (1) has three concave portions on the molding surface, namely, a concave portion having a depth of 7 mm, a concave portion having a depth of 11 mm, and a concave portion having a depth of 15 mm.
- the opening of each recess was a square with a side length of 25 mm.
- the entire mold surface of the mold (1) had a leather grain pattern.
- the temperature of the mold (1) was 250 ° C.
- the two are rotated 180 ° around the rotation axis (4) using a uniaxial rotating device, and the powder (3) is removed from the mold (1). It was supplied on the molding surface.
- the container (2) and the mold (1) fixed to each other are reciprocated twice in a range of 45 ° around the rotation axis (4) over 15 seconds to melt the powder (3).
- the molten powder (3) was attached to the molding surface of the mold (1).
- the fixed container (2) and the mold (1) are again 180. It was rotated back to its original position, and the powder (3) that did not adhere to the molding surface of the mold (1) was collected in the container (2).
- the mold (1) to which the molten powder (3) was attached was removed from the container (2), and this was removed to 250. After heating in oven C for 2 minutes, it was cooled. Thereafter, the compact (5) was removed from the mold (1).
- the obtained molded body (5) has a thickness of 1.2 mm, and has three protrusions, namely, a protrusion A having a height of 7 mm, a protrusion B having a height of 11 mm, and a height of 15 mm. It had a convex portion C of mm. The roots of all the projections were square with a side of 25 mm. Also, on the surface of the molded body that was in contact with the mold (1), the grain pattern applied to the molding surface of the mold (1) was accurately transferred. FIG. 3 shows a cross-sectional view of this compact. Table 5 shows the evaluation results of the powder and the compact. Example 15
- Example 14 In the same manner as in Example 14, except that the discharge speed of the composition from the die was 0.8 kg / hour and the take-off rate of the composition was 35 mZ during the production of the powder of the thermoplastic elastomer composition. Thus, a molded body was manufactured.
- the average sphere-equivalent particle diameter of the powder used for the production of the compact was 0.94 mm, and the bulk specific gravity was 0.460.
- Table 5 shows the evaluation results of the obtained molded bodies.
- a molded product was produced in the same manner as in Example 1 except that the take-up speed of the thermoplastic elastomer composition during the production of the powder was 14 m / min.
- the average sphere-equivalent particle diameter of the powder used for the production of the molded product was 1.25 imn, and the bulk specific gravity was 0.470.
- Table 5 shows the evaluation results of the obtained molded bodies.
- the powder used for the production of the compact had a spherical average particle diameter of 0.92 mm and a bulk specific gravity of 0.460.
- * (1) of the thermoplastic elastomer composition constituting the above powder was 1.2 ⁇ 10 3 poise, and n was 0.15. Table 5 shows the evaluation results of the obtained molded bodies.
- the pellet of the obtained thermoplastic elastomer composition was prepared using liquid nitrogen—100. After cooling to C, the powder was ground to obtain a powder passing through a 32 mesh (ie, 500 in ⁇ 500 m mesh) standard sieve. Ball conversion of this powder The average particle size was 0.20 mm, and the bulk specific gravity was 0.290.
- thermoplastic elastomer composition obtained by kneading was 2 ⁇ 10 3 voids, and n was 0.14.
- the Beretsuto kneading composition obtained in the same manner as in Comparative Example 4 was cooled to one 10 0 e C using liquid nitrogen, and pulverized to a powder passing through a 32 mesh Tyler standard sieve Obtained.
- the average sphere-equivalent particle size of this powder was 0.18 mm, and the bulk specific gravity was 0.293.
- the extruded composition was extruded at a discharge speed of 1 kg / hour per discharge port, and the extruded composition was taken up at a take-up speed of 32 m / min and then cooled to produce a strand having a diameter of 0.8 nun.
- the strand was cut with a pelletizer to obtain a powder having an average sphere-equivalent particle diameter of 0.91 mm and a bulk specific gravity of 0.460.
- The? 7 * (1) of the thermoplastic elastomer composition was 1 4 ⁇ 10 3 boys, n was 0.13.
- a molded product was produced in the same manner as in Example 14, except that the powder obtained above was used. Table 6 shows the evaluation results of the obtained molded bodies.
- thermoplastic elastomer composition A powder of a thermoplastic elastomer composition was produced in the same manner as in Example 20, except that the blending amount of the ethylene / 1-butene copolymer rubber was changed to 200 parts by weight, S part.
- the average sphere-equivalent particle diameter of this powder was 0.94 mm, and the bulk specific gravity was 0.450.
- 7? * (1) of the above thermoplastic elastomer composition was 1.8 ⁇ 10 3 voids, and n was 0.15.
- a molded article was produced in the same manner as in Example 20, except that .03) was used.
- the average sphere-equivalent particle size of the powder used to manufacture the compact was 0.93 mm, and the bulk specific gravity Was 0.458,? * (1) of the thermoplastic elastomer composition constituting the powder was 3 * 10 ⁇ 2 > boise, and n was 0.04.
- Table 6 shows the evaluation results of the obtained molded bodies.
- thermoplastic elastomer composition was produced in the same manner as in Example 20, except that the take-up speed of the thermoplastic elastomer composition from the die was 14 m / min. This powder had an average sphere-equivalent particle size of 1.25 nun and a bulk specific gravity of 0.450. Using this powder, a molded article was produced in the same manner as in Example 20. Table 6 shows the evaluation results of the obtained molded bodies.
- a thermoplastic elastomer composition was prepared in which 77 * (1) was 1.4 ⁇ 10 3 voids and n was 0.13. The composition was extruded from the twin-screw extruder and cut by a cutter to protect the pellets (diameter: 3 mm, length: 6 mm).
- the pellet was cooled to 110 ° C. using liquid nitrogen, and then pulverized to obtain a powder that passed through a 32-mesh Tyler standard sieve.
- the average sphere-equivalent particle diameter of the powder was 0.20 mm, and the bulk specific gravity was 0.270.
- thermoplastic elastomer composition After feeding this pellet to a 30 mm i extruder and kneading at 160 ° C, the resulting thermoplastic elastomer composition was discharged from a die with a discharge port diameter of 1.0 mm to 1 kg / per discharge port. Extruded at the discharge speed at the time, the extruded composition was 32 m After withdrawing at a withdrawal speed of / min, the strand was cooled to produce a strand having a diameter of 0.8 mm. This strand was cut with a pelletizer to obtain a powder having a spherical equivalent diameter of 0.91 mm and a bulk specific gravity of 0.450.
- the pellet of the thermoplastic elastomer composition produced in Comparative Example 7 was cooled to 100 ° C. using liquid nitrogen and then pulverized to obtain a powder that passed through a 32 mesh standard sieve. .
- the average sphere-equivalent particle diameter of the powder was 0.18 mm, and the bulk specific gravity was 0.293.
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Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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DE69730124T DE69730124D1 (de) | 1996-03-15 | 1997-03-13 | Thermoplastische elastomerzusammensetzung, daraus hergestelltes pulver und formkörper |
EP19970907302 EP0887378B1 (en) | 1996-03-15 | 1997-03-13 | Thermoplastic elastomer composition and powder and molded article thereof |
US09/142,691 US6331360B1 (en) | 1996-03-15 | 1997-03-15 | Thermoplastic elastomer composition and powder and molded article thereof |
Applications Claiming Priority (10)
Application Number | Priority Date | Filing Date | Title |
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JP5910296 | 1996-03-15 | ||
JP8/59102 | 1996-03-15 | ||
JP8/120354 | 1996-05-15 | ||
JP12035896 | 1996-05-15 | ||
JP12035496 | 1996-05-15 | ||
JP8/120358 | 1996-05-15 | ||
JP12035596 | 1996-05-15 | ||
JP8/120355 | 1996-05-15 | ||
JP8/124462 | 1996-05-20 | ||
JP12446296 | 1996-05-20 |
Publications (1)
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WO1997033940A1 true WO1997033940A1 (fr) | 1997-09-18 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP1997/000794 WO1997033940A1 (fr) | 1996-03-15 | 1997-03-13 | Composition et poudre d'elastomere thermoplastique et article moule obtenu |
Country Status (6)
Country | Link |
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US (1) | US6331360B1 (ja) |
EP (1) | EP0887378B1 (ja) |
KR (1) | KR19990087815A (ja) |
CN (1) | CN1218490A (ja) |
DE (1) | DE69730124D1 (ja) |
WO (1) | WO1997033940A1 (ja) |
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WO1999032556A1 (fr) * | 1997-12-22 | 1999-07-01 | Sumitomo Chemical Company, Limited | Composition thermoplastique d'elastomere d'olefine servant a mouler une poudre, poudre de moulage et objet moule |
EP0950490A1 (en) * | 1998-04-13 | 1999-10-20 | Mitsuboshi Belting Ltd. | Bilayered skin, slush molding thermoplastic elastomer composition for use in the skin, and an article including the skin |
EP0987287A4 (en) * | 1998-01-29 | 2001-03-21 | Sumitomo Chemical Co | POWDERED THERMOPLASTIC ELASTOMER COMPOSITION, POWDER COMPRESSING PROCESS AND THE MOLDINGS |
EP1038918A4 (en) * | 1997-12-11 | 2001-03-21 | Sumitomo Chemical Co | THERMOPLASTIC OLEFIN ELASTOMER COMPOSITION |
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EP1022292B1 (en) * | 1999-01-21 | 2005-05-04 | JSR Corporation | Ethylene-1-butene random copolymer and polypropylene resin composition comprising the same |
US6805822B2 (en) | 2000-09-20 | 2004-10-19 | Sumitomo Chemical Company, Limited | Method for producing thermoplastic elastomer powder |
US7550103B2 (en) * | 2001-10-09 | 2009-06-23 | International Automotive Components Group North America, Inc. | Plastic skin forming process |
MXPA03005062A (es) * | 2001-10-09 | 2004-09-10 | Collins & Aikman Automotive Co | Proceso para formar una pelicula de plastico. |
US7585516B2 (en) * | 2001-11-12 | 2009-09-08 | Advanced Cardiovascular Systems, Inc. | Coatings for drug delivery devices |
US7091282B2 (en) * | 2003-05-15 | 2006-08-15 | Bridgestone Corporation | Composition containing ethylene/propylene/diene copolymer and polyalkylene/olefin copolymer |
ATE437202T1 (de) * | 2004-11-16 | 2009-08-15 | Dow Global Technologies Inc | Elastomere zusammensetzungen mit erhöhter einschnürungsresistenz für hochgeschwindigkeits- blechextrudierungsanwendungen |
US8709315B2 (en) * | 2009-08-18 | 2014-04-29 | Exxonmobil Chemical Patents Inc. | Process for making thermoplastic polymer pellets |
CN102193106A (zh) * | 2010-03-18 | 2011-09-21 | 长江大学 | 一种可控震源专用扫频信号的产生方法 |
KR101282630B1 (ko) * | 2011-09-01 | 2013-07-12 | 현대자동차주식회사 | 자동차 내장재용 적층시트 |
WO2013138204A1 (en) | 2012-03-13 | 2013-09-19 | Mikulak James | Materials for powder-based additive manufacturing processes |
JP6405459B2 (ja) * | 2014-09-30 | 2018-10-17 | エクソンモービル ケミカル パテンツ インコーポレイテッド | タイヤトレッド性能の改善のためのプロピレン−エチレン−ジエンターポリマー添加剤 |
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JPH07102126A (ja) | 1993-08-12 | 1995-04-18 | Tosoh Corp | ポリプロピレン系樹脂組成物 |
JP3428092B2 (ja) | 1993-10-29 | 2003-07-22 | 東ソー株式会社 | 熱可塑性エラストマー組成物 |
ES2107315T3 (es) * | 1994-03-29 | 1997-11-16 | Advanced Elastomer Systems | Elastomeros termoplasticos que tienen propiedades superficiales mejoradas. |
EP0712891B1 (en) * | 1994-11-16 | 2002-09-18 | Sumitomo Chemical Company Limited | Thermoplastic elastomer powder, molding method of the same, and molded article comprising the same |
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1997
- 1997-03-13 DE DE69730124T patent/DE69730124D1/de not_active Expired - Lifetime
- 1997-03-13 CN CN97194659A patent/CN1218490A/zh active Pending
- 1997-03-13 KR KR1019980707320A patent/KR19990087815A/ko not_active Ceased
- 1997-03-13 WO PCT/JP1997/000794 patent/WO1997033940A1/ja not_active Application Discontinuation
- 1997-03-13 EP EP19970907302 patent/EP0887378B1/en not_active Expired - Lifetime
- 1997-03-15 US US09/142,691 patent/US6331360B1/en not_active Expired - Fee Related
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JPH01198649A (ja) * | 1987-10-29 | 1989-08-10 | Japan Synthetic Rubber Co Ltd | ゴム組成物 |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1038918A4 (en) * | 1997-12-11 | 2001-03-21 | Sumitomo Chemical Co | THERMOPLASTIC OLEFIN ELASTOMER COMPOSITION |
WO1999032556A1 (fr) * | 1997-12-22 | 1999-07-01 | Sumitomo Chemical Company, Limited | Composition thermoplastique d'elastomere d'olefine servant a mouler une poudre, poudre de moulage et objet moule |
EP1043358A4 (en) * | 1997-12-22 | 2001-03-21 | Sumitomo Chemical Co | THERMOPLASTIC OLEFIN ELASTOMER COMPOSITION FOR MOLDING POWDER, MOLDING POWDER AND MOLDED OBJECT |
US6531545B1 (en) | 1997-12-22 | 2003-03-11 | Sumitomo Chemical Company, Limited | Thermoplastic olefin elastomer composition for powder molding, powder for powder molding, and molded object |
EP0987287A4 (en) * | 1998-01-29 | 2001-03-21 | Sumitomo Chemical Co | POWDERED THERMOPLASTIC ELASTOMER COMPOSITION, POWDER COMPRESSING PROCESS AND THE MOLDINGS |
US6348535B1 (en) | 1998-01-29 | 2002-02-19 | Sumitomo Chemical Company, Limited | Thermoplastic elastomer composition powder, powder molding process with the same, and moldings |
EP0950490A1 (en) * | 1998-04-13 | 1999-10-20 | Mitsuboshi Belting Ltd. | Bilayered skin, slush molding thermoplastic elastomer composition for use in the skin, and an article including the skin |
Also Published As
Publication number | Publication date |
---|---|
EP0887378B1 (en) | 2004-08-04 |
DE69730124D1 (de) | 2004-09-09 |
KR19990087815A (ko) | 1999-12-27 |
EP0887378A4 (en) | 1999-07-14 |
US6331360B1 (en) | 2001-12-18 |
CN1218490A (zh) | 1999-06-02 |
EP0887378A1 (en) | 1998-12-30 |
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