WO2009011448A1 - 熱可塑性エラストマー組成物および複合成形体 - Google Patents
熱可塑性エラストマー組成物および複合成形体 Download PDFInfo
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- WO2009011448A1 WO2009011448A1 PCT/JP2008/063220 JP2008063220W WO2009011448A1 WO 2009011448 A1 WO2009011448 A1 WO 2009011448A1 JP 2008063220 W JP2008063220 W JP 2008063220W WO 2009011448 A1 WO2009011448 A1 WO 2009011448A1
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- WIPO (PCT)
- Prior art keywords
- component
- ethylene
- weight
- propylene
- thermoplastic elastomer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/82—Testing the joint
- B29C65/8207—Testing the joint by mechanical methods
- B29C65/8215—Tensile tests
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/114—Single butt joints
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/434—Joining substantially flat articles for forming corner connections, fork connections or cross connections
- B29C66/4344—Joining substantially flat articles for forming fork connections, e.g. for making Y-shaped pieces
- B29C66/43441—Joining substantially flat articles for forming fork connections, e.g. for making Y-shaped pieces with two right angles, e.g. for making T-shaped pieces, H-shaped pieces
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
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- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
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- B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
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- 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
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- 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
- C08L23/14—Copolymers of propene
- C08L23/142—Copolymers of propene at least partially crystalline copolymers of propene with other olefins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- 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—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/009—Shaping techniques involving a cutting or machining operation after shaping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/82—Testing the joint
- B29C65/8207—Testing the joint by mechanical methods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
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- B29C66/731—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the intensive physical properties of the material of the parts to be joined
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- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
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- B29K2023/06—PE, i.e. polyethylene
- B29K2023/0608—PE, i.e. polyethylene characterised by its density
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- B29L2031/3005—Body finishings
- B29L2031/3038—Air bag covers
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- C—CHEMISTRY; METALLURGY
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Definitions
- the present invention relates to a thermoplastic elastomer composition, and an airbag cannula molded product obtained by injection molding the thermoplastic elastomer.
- the present invention also relates to a composite molded body in which a molded body made of a polypropylene resin and a molded body made of a thermoplastic elastomer are integrated by adhesion. Background
- the airbag cover of the automotive airbag system has difficult Oka IJ characteristics, and in the event of a collision, it must be ruptured so that the airbag can be deployed and 3 ⁇ 4 will not scatter. It is necessary to have a bow that can withstand, and to have metaphysics.
- the material used for the airbag cover include a material containing random polypropylene, low-density polyethylene, and an ethylene copolymer rubber, and a material containing olefinic resin and olefinic rubber.
- the following materials have been prepared (Japanese Patent Laid-Open No. 8-27 3 31, Japanese Patent Laid-Open No. 10-2 7300 1 and Japanese Patent Laid-Open No. 10-2 6 5 6 28). «Airbag canopies are molded by injection molding using such materials.
- an airbag device for a passenger seat is sometimes placed on an instrument panel (hereinafter referred to as instrument panel) which is an interior part of an automobile.
- the airbag device is an airbag that inflates and absorbs impact to the human body when the automobile collides, an airbag (gas generator) for inflating the airbag, and an airbag canopy that accommodates the airbag. It has become.
- instrument panels are made of materials mainly composed of polypropylene resin because BH 'raw materials are required.
- the airbag cover has mechanical properties such as low-temperature impact, shape retention, It is required to be excellent in workability when modularizing with other airbag parts, and an olefin-based thermoplastic elastomer composition is used as a material satisfying such required performance.
- JP-A-7-53828, JP-A-8-27331 As a method for embodying an instrument panel and an airbag canopy, there is known a method in which an instrument panel jar (inner) and an airbag cover are aged by wearing M (see Japanese Patent Laid-Open No. 2004-98734, Japanese Laid-Open Patent Publication No. 2004). — No. 231027). Disclosure of the invention
- the first problem of the present invention is the melt flowability during injection molding, the mold release property when the molded product is released from the mold, the airbag cano-molded product obtained by injection molding » « 4, weld properties It is an object of the present invention to provide a thermoplastic elastomer having a well-balanced required characteristic, and an airbag bag made of the elastomer, and a molded body.
- thermoplastic elastomer thread that is excellent in mechanical properties such as laver fermentation, etc., shape stability, and modularity with other airbag parts! It is an object of the present invention to provide a composite molded body in which a molded body made of the above and a molded body made of a polypropylene-based resin are firmly aged by W section and integrated.
- the present invention relates to a thermoplastic elastomer spun product containing the following component (A1), component (B 1) and component (C 1), wherein component (A1), component (B 1) And the total amount of component (C 1) is 100% by weight, the content of component (A 1) is 30 to 55% by weight, and the content of component (B 1) and component (C 1)
- a thermoplastic elastomer composition having a weight ratio (content of component (B 1), content of component Z (C 1)) of 0.25 to 5.0 is provided.
- Component (A 1) 70 to 90% by weight of a propylene-based polymer part ( ⁇ 1) obtained by polymerizing a monomer mainly composed of propylene polymerized in the first step, and polymerized in the second step.
- T An ethylene copolymer part obtained by copolymerizing ethylene with propylene and Z or monoolefin having 4 or more carbon atoms, the ethylene copolymer part being 100% by weight Ethylene-based copolymer part with an ethylene monomer content of 20-80% by weight (/ 31) 10-30% by weight, 20 ° C xylene soluble part (CX S Propylene-based polymer (Propylene-based polymer part (a 1) and ethylene-based copolymer) having an intrinsic viscosity [77] measured in 135 ° C tetralin of 2.5 to 8.0 Part
- the content of (i31) is the value when the total amount of component (A1) is 100% by weight), component (B1): mu-vis-one viscosity (ML m , 125 ° C) 20-: 100 Yes, ethylene-propylene-based copolymer rubber in which the weight ratio of monomer units derived from ethylene and monomer units derived from propylene is 30 70 to 75Z25 (however, a single amount derived from ethylene in component (B1))
- Component (C 1) an ethylene copolymer that is a copolymer of ethylene and a single olefin having 4 or more carbon atoms.
- the melt flow rate measured at a density of 0.860 to 0.910 gZcm 3 and a force of 190 ° C and a weight of 21.18 N is 0.01 to L0 gZ 10 Ethylene copolymer that is min.
- the present invention provides an airbag can molded product obtained by injection molding the thermoplastic elastomer single thread.
- the present invention provides a composite product in which a molded product made of a polypropylene-based shelf (A2) that satisfies the following requirements and a molded product made of a thermoplastic elastomer (B2) are integrated by leak welding.
- a molded body is provided.
- (A2) a polypropylene resin having a flexural modulus of 1000 MPa or more and a melting peak temperature measured by a differential scanning calorimeter of 160 ° C or more,
- (B2) The difference from the peak of the polypropylene resin (A2) is 1 O: a polypropylene polymer (component (1)) having the following melting peak temperature, an ethylene-derived monomer unit and propylene The weight ratio of the derived monomer units is 30/70 to 75/25 Ethylene-propylene-based copolymer rubber (component (b2)) (provided that the total of ethylene-derived monomer units and propylene-derived monomer units in component (b2) is 100) And a thermoplastic elastomer composition having a flexural modulus of 150 to 80 OMPa.
- FIG. 1 is a schematic diagram of a molded body used for evaluation of releasability.
- Figure 2 shows the composite molded body obtained in the example.
- Fig. 3 is a schematic diagram of a composite molded body used to measure the bonding strength.
- the thermoplastic elastomer fiber according to the present invention contains a component (A1), a component (B 1) and a component (C 1) which are finished.
- Component (A1) is a propylene polymer part (a 1) obtained by polymerizing a monomer mainly composed of propylene polymerized in the first step, and is polymerized in the second step.
- An ethylene copolymer part obtained by copolymerizing ethylene and propylene and Z or monoolefin having 4 or more carbon atoms, the ethylene copolymer part being 100% by weight.
- the propylene polymer of component (A 1) is composed of propylene polymer part (1) 70 to 90% by weight and ethylene copolymer part ( ⁇ 1) 10 to 30% by weight, preferably It consists of 75 to 85% by weight of a propylene-based polymer part ( ⁇ 1) and 15 to 25% by weight of an ethylene-based copolymer part ( ⁇ 1) (provided that component (A1) is 100% by weight). If the content of the ethylene copolymer part ( ⁇ 1) contained in the propylene polymer of component (A1) is too large, the melt flowability of the thermoplastic elastomer yarn 1 ⁇ product tends to be inferior.
- ( ⁇ 1) is a content of ethylene-derived monomer units of 20 to 80% by weight, preferably 30 to 70% by weight, when the ethylene copolymer part is 100% by weight, More preferably, it is 35 to 60% by weight.
- An airbag cano obtained when the content of ethylene-derived single unit is too small or too large.
- the propylene-based polymer of component (A1) has an intrinsic viscosity [77] measured in 135 ° C tetralin of a 20 ° C xylene soluble part (CXS part) of 2.5 to 8.0, preferably 3. 0 to 7.5.
- CXS part 20 ° C xylene soluble part
- a polymerization method using a olefin polymerization vessel is used.
- the ethylene-propylene copolymer rubber component (B 1) contained in the thermoplastic elastomer ffifig product of the present invention has a weight ratio of ethylene-derived monomer units to propylene-derived monomer units of 30 X Ethylene-propylene-based copolymer rubber that is 7 0-7 5/2 5, preferably 3 5/6 5-7 70/30 (provided that the monomer unit derived from ethylene in component (B 1))
- the total amount of propylene-derived single-quantity zen positions is 1 0 0).
- the ethylene-propylene copolymer of the component (B 1) has a viscosity of 1 to 12 measured at 100 ° C. (ML 1M , 1 25 ° C.) 2 0 to; L 0 0, Preferably it is 40-80. If the viscosity is too low, the moldability and low temperature »14 of the air bag cover molded product obtained may be inferior, and the melt fluidity of the thermoplastic elastomer composition obtained if it is excessive is inferior. Sometimes. The viscosity is measured according to AS TM D— 1 6 4 6.
- the component (B 1) may contain a monomer unit derived from ethylene, a unit derived from ethylene, a unit derived from propylene, and a monomer unit derived from non-conjugated gen.
- Examples of the non-conjugated gen include 1, 4
- the component (B1) is contained in the component (B1) because the age of the ethylene-propylene-non-conjugated dicopolymer rubber and the durability of the airbag canopy obtained using the rubber-containing product
- the amount of monomer units derived from non-conjugated gen is preferably 10% by weight or less, and more preferably 5% by weight or less.
- the ethylene copolymer which is a copolymer of the component (C1) ethylene contained in the thermoplastic elastomer product of the present invention and hyolein having 4 or more carbon atoms, has a density of 0.886 0 to 0. 910 gZcm 3 , preferably 0.865-0.905 gZcm 3 , more preferably 0.865-0.900 gZcm 3 .
- the degree is less than 0.860 gZcm 3
- the density is from 0.910 gZ cm 3
- the display difficulty 14 of the airbag cover molded product obtained using the thermoplastic elastomer containing the component (C1) tends to be inferior.
- the density of component (C1) is measured without annealing according to JIS K7112.
- the ethylene copolymer as the component (C 1) has a melt flow rate (hereinafter referred to as MFR) measured at a temperature of 190 ° C. and a load of 21.18 N of 0.01 to 108/10 minutes, Preferably, the content is 0.5 to 8 gZlO. If the MFR is too small, the melt flowability of the resulting thermoplastic elastomer yarn tends to be inferior, and if it is too large, the thermoplastic elastomer composition containing sincerity (C1) is injection molded. There is a tendency that the mold release properties and the welded physical properties of the molded airbag cover obtained by injection molding tend to be inferior.
- thermoplastic elastomer monolith of the present invention includes the component (A1), the component (B 1), and the component (ci), and the ratio thereof is such that the thermoplastic elastomer is 100% by weight.
- the component (A1) is 30 to 55% by weight, preferably 35 to 53% by weight. If the content of component (A1) is too low, the melt flowability of the thermoplastic elastomer obtained tends to be inferior. If it is too high, the thermal shock resistance of the air bag cano-molded product obtained using a discriminating product Tend to be inferior.
- thermoplastic elastomer of the present invention When the thermoplastic elastomer of the present invention is used for injection molding, it is added to the component (A1), the component (B 1) and the component (C 1) from the viewpoint of improving the releasability from the mold. Further, it is preferable to contain the following component (D 1).
- Ingredient (D1) Compound group consisting of a fatty acid having 5 or more carbon atoms, a metal salt of a fatty acid having 5 or more carbon atoms, an amide of an aliphatic vein having 5 or more carbon atoms, and an ester of fatty oil having 5 or more carbon atoms At least one compound selected from.
- fats and oils of component (D 1) having a carbon atom of 5 or more include lauryl, urine, luminic acid, stearic acid, behenic acid, oleic acid, erucic acid, linoleic acid, and ricinoleic acid. be able to.
- Component (D l) is a metal salt of an oil candy having 5 or more carbon atoms, and the above oil candy and a metal such as Li, Na, Mg, Al, K, Ca, Zn, Ba, Pb, etc. Specific examples of the salt include lithium stearate, sodium stearate, calcium stearate, stearin and the like.
- Component (D 1) Carbon Raw Material 5 or higher amides of lime are lauriamide, palmitic acid amide, stearic acid amide, oleic acid amide, L force acid amide, methylenebis stearic acid, ethylene bisstearic acid Examples thereof include amides, ethylene bisoleic acid amides, and stearyl jeanol amides. Of these, L-acid amide is preferred.
- Component (D 1) carbon source »C 5 or higher fatty ester includes fatty female alcohol (such as myristyl alcohol, palmityl alcohol, stearyl alcohol, behenyl alcohol, 12 hydroxystearyl alcohol), aromatic Alcohol (benzyl alcohol, monophenylethyl alcohol, phthalyl alcohol, etc.), Alcohol (darisylin, diglycerin, polyglycerin, sorbitan, sorbyl !, propylene glycol, polypropylene glycol, polyethylene glycol, pen erythritol 1 ⁇ 1, ⁇ Limethylolpropane, etc.) and esters of the above fatty acids, such as glycerin monooleate, glycerin dioleate, polyethylene glycol monostearate, citrate diester It can be exemplified Teareto.
- fatty female alcohol such as myristyl alcohol, palmityl alcohol, stearyl alcohol, behenyl alcohol, 12 hydroxystearyl alcohol
- thermoplastic elastomer of the present invention contains the component (D 1), the balance between the mold releasability from the mold at the time of injection molding and the appearance of the molded body surface obtained by injection molding.
- thermoplastic elastomer according to the present invention may be made of an inorganic filler (talc, carbonic acid, calcinated kaolin, etc.), an organic filler (fiber, wood powder, cellulose powder, etc.), a lubricant (silicone oil).
- inorganic filler talc, carbonic acid, calcinated kaolin, etc.
- organic filler fiber, wood powder, cellulose powder, etc.
- a lubricant silicone oil
- antioxidants phenolic, thioic, phosphorus
- lactone system lactone system
- vitamin system etc.
- weather resistance stabilizer UV absorber (benzotriazole system, triazine system, anilide system, benzophenone system, etc.), heat stabilizer, light stabilizer (hindered amine system, benzoate) ), Pigments, nucleating agents, m (metal oxides (oxidizing bacteria, magnesium oxide, etc.), metal chlorides (iron chloride, calcium chloride, etc.), hydrated talcite, aluminate, etc.) You may contain.
- thermoplastic elastomer of the present invention comprises component (A1), component (B1) and component (C1).
- thermoplastic elastomer composition can be molded into a desired molded body by the molding method, preferably the injection molding method.
- the thermoplastic elastomer of the present invention is a material for producing an air bag canopy molded body by injection molding.
- the airbag cover made of a single thermoplastic elastomer fiber according to the present invention is used for an operating airbag canopy, a passenger seat airbag canopy, a side airbag cover, a knee airbag cover, and a curtain airbag cover.
- the hoop thickness (T1) is the ratio of 1.55 (T1) to Tengu ( ⁇ 2) (T1ZT
- the air bag cover has excellent appearance and excellent physical properties. Become a body.
- the hoop thickness (T1) of the molded body is preferably 1.55 mm, and more preferably 1.88 4.8 mm.
- the ratio of the hoop thickness (T1) to the balance (T2) (T1ZT2) of the molded product is preferably 0.5 to L. 1. 6 1.0 is more preferable. In particular, if the ratio is too large, sink marks tend to occur in the resulting molded article.
- the opening area per one opening portion of the hoop of the shaped body is preferably 7 cm 2 or less, and more preferably 6 cm 2 or less.
- the composite molded body of the present invention is a composite molded body in which a molded body made of a polypropylene resin (A2) and a molded body made of a thermoplastic elastomer (B2) are materialized by igliig attachment.
- the polypropylene resin (A2) in the present invention has a curvature ratio of 100 OMPa or more, and preferably 150 OMPa or more. If the curvature ratio is too small, the resulting composite molded body may be easily formed.
- the curvature ratio is a value measured by JIS-K-7171.
- the polypropylene resin (A2) has a melting peak temperature measured by a differential meter of 16 O: or higher, preferably 163 or higher.
- the melting peak fig is a value measured according to JIS-K-7 1 2 1 for the polypropylene resin used as a raw material. Specifically, it was heated at the room temperature—220 ⁇ one 90 ⁇ —200 (ascending 3 ⁇ 4M degree 10: Z minutes, falling ⁇ ⁇ 5 ⁇ ⁇ minutes, no holding time), and measured in the second temperature rising process. SI ⁇ peak. 3 ⁇ 4 ⁇ where the awakening peak is duplicated ifffl the peak value located on the highest temperature side.
- the polypropylene resin (A2) according to the present invention includes an inorganic filler (talc, calcium carbonate, calcined kaolin, etc.), an organic filler (fiber, * min, cellulose powder, etc.), a lubricant (silicone oil, silicone gum) as necessary.
- an inorganic filler talc, calcium carbonate, calcined kaolin, etc.
- an organic filler fiber, * min, cellulose powder, etc.
- a lubricant silicone oil, silicone gum
- Antioxidants phenolic, phenolic, phosphorus, lactone, vitamins, etc.
- weathering stabilizers UV absorbers (benzotriazoles, triazines, anilides, benzophenones, etc.), Heat stabilizers, light stabilizers (such as hindered amines, benzoic acid bases), pigments, nucleating agents, adsorbents (metal oxides (oxidation, Magnesium oxide, etc.), metal chlorides (iron chloride, calcium chloride, etc.), hydrated talcite, aluminates, etc.), etc.
- the thermoplastic elastomer (B2) in the present invention is derived from a polypropylene polymer (component (1)) having a melting peak temperature of 10 or less from the melting peak temperature of the polypropylene resin (A2), and ethylene.
- the component (b 1) contained in the plastic elastomer monocycle (B2) is a polypropylene having a melting peak temperature lower than the melting peak temperature of the polypropylene resin (A2) by 10 or less, preferably 7 or less. Based polymer.
- the present invention relates to the melting peak of the polypropylene resin (A2) constituting one molded article to be sprinkled, and the component (b 1) contained in the thermoplastic elastomer fiber (B2) constituting the other molded article. It has been found that by making the difference from the peak peak value below a certain level in this way, it can be made stronger by ⁇ welding.
- the melting peak of component (1) is a value measured by JIS-K-7121 for component (b 1) used as a raw material.
- the temperature is increased by the procedure of room temperature ⁇ 220 ⁇ —90 ⁇ 20 Ot (increased SI degree 10 ⁇ : apportioned, descending 3 ⁇ 4 ⁇ 5 / min, no holding time), and measured in the second temperature raising process ⁇ Peak as is. If multiple mm peaks are obtained, the peak value located at the highest temperature is reversed.
- Polypropylene polymer as component (b 1) contained in the thermoplastic elastomer composition (B2) is composed of 70 to 90% by weight of the following propylene polymer part (2) and ethylene copolymer.
- Part (/ 32) is preferably a polypropylene polymer composed of 10 to 30% by weight (provided that the total amount of component (b 1) is 100% by weight).
- (32) An ethylene copolymer part obtained by copolymerizing ethylene and propylene and Z or ⁇ -olefin having 4 or more carbon atoms in the second step, the ethylene copolymer part Ethylene-based copolymer part in which the content of monomer units derived from ethylene is 20 to 80% by weight with respect to 100% by weight
- the ethylene copolymer part (/ 32) obtained by copolymerizing ethylene and propylene and Z or ⁇ -olefin having 4 or more carbon atoms contained in the polypropylene polymer of component (1) is
- the content of the ethylene-derived monomer unit when the ethylene copolymer is 100% by weight is preferably 20 to 80% by weight, and more preferably 30 to 70% by weight.
- the polypropylene polymer of component (b 1) is preferably composed of 70 to 90% by weight of propylene polymer part ( ⁇ 2) and 10 to 30% by weight of ethylene copolymer part ( ⁇ 2). It is more preferable that the polymer-based polymer part (ii) 75 to 85% by weight and the ethylene-based copolymer part (] 32) 15 to 25% by weight (provided that component (b 1) is 100% by weight And).
- the content of the ethylene copolymer part ( ⁇ 2) contained in the polypropylene polymer (b 1) is excessive, the melt fluidity of the resulting thermoplastic elastomer will be poor. Therefore, if the content of (/ 32) is too small, the low temperature characteristics of the molded product made of the thermoplastic elastomer product obtained may be inferior.
- Polypropylene polymer component (1) is composed of 2 Ot: xylene soluble part (CXS part).
- the intrinsic viscosity [r?] Measured in 135 ° C tetralin is preferably 2.55 to 8.0, more preferably 3.0 to 7.5, and 3.5 to 7 It is preferable to have a component of a polypropylene polymer containing a CXS part having an intrinsic viscosity [/?] Of 2.5 or more.
- a component of a polypropylene polymer containing a CXS part having an intrinsic viscosity [/?] Of 2.5 or more By using it as (bl), it is possible to obtain a composite molded body that is more excellent for a bonded bow daughter after drooping.
- the component (bl) a polypropylene polymer containing a CXS part with an intrinsic viscosity [??] of 8.0 or less, the yarn has excellent melt fluidity! It becomes a thing.
- the 2 xylene soluble part means that 5 g of polypropylene polymer is completely dissolved in 500 ml of boiling xylene, then cooled to 2 Ot: and left for 4 hours or more. Thereafter, this is separated into a precipitate and a solution, and the solution obtained by filtration is dried and dried at 70 under reduced pressure.
- Intrinsic viscosity [ ⁇ ?] was calculated using the Ubbelohde viscometer, 3 ⁇ 4 viscosity, and the calculation described in “Polymer Solution, High Liver Experimental 1” (published by Kyoritsu Shuppan Co., Ltd., 1982), page 491. It is obtained by the method using the method.
- a method for producing the component (b 1) polypropylene-based polymer a known polymerization method using soot for olefin polymerization is used. For example, a slurry polymerization method, a solution polymerization method, a bulk polymerization method, a polymerization method, and the like using a complex catalyst such as Ziegler's Natsume-type cocoon, a meta-octacene complex, or a non-meta-octacene complex. It is also possible to use commercially available products.
- a complex catalyst such as Ziegler's Natsume-type cocoon, a meta-octacene complex, or a non-meta-octacene complex. It is also possible to use commercially available products.
- the component (b2) contained in the thermoplastic elastomer monocycle (B2) has a weight ratio of ethylene-derived monomer units to propylene-derived monomer units of 30/70 to 75/25, preferably 3
- the total of the ethylene-derived monomer units and propylene-derived monomer units # units in (b 2) is 10
- thermoplastic elastomer composition (B) containing component (b2) is contained.
- the low temperature characteristics of the molded product may be inferior.
- Component (b2) ethylene-propylene copolymer rubber, is measured by l O Ot:
- Component (b2) may be a copolymer of ethylene and propylene with a non-conjugated diene.
- non-conjugated genes examples include 1,4_hexagen, 1,6-year-old cugen, 2-methyl-1,5_hexagen, 6-methyl_1,5-hexabutadiene, 7-methyl-1 , 6_ octene-like chain non-conjugated genes; cyclohexagen, dicyclopentene, methyltetrahydroindene, 5-vinylnorbornene, 5-ethylidene-2-norbornene, 5-methylene-2-norbornene , 5—Isopropylidene—2-Norbornene, 6 —Chloromethylylone, 5-Isopropylenyl, 2-Norbornene and other cyclic non-conjugated gens; 2,3-Disopropylidene, 1—Norbornene, 2—Ethylidene, 1— Isopropylene 1-5-norbornene, 2-propenyl 1,2-norpora
- component (b2) is an ethylene-propylene-non-conjugated-gen copolymer rubber
- a non-conjugated-gen-derived monomer contained in 100% by weight of the copolymer rubber is used.
- the content of the ⁇ zen position is preferably 10% by weight or less, and more preferably 5% by weight or less.
- thermoplastic elastomer product ( ⁇ 2) in the present invention preferably contains 100 parts by weight of the component (1) and 50 to 300 parts by weight of the component (b2) per 100 parts by weight of the component (b 1).
- thermoplastic elastomer composition (B2) according to the present invention comprises the component (b 1) and the component described above.
- an ethylene copolymer which is a copolymer of ethylene and monoolefin having 4 or more carbon atoms, has a density of 0.860. ⁇ 0.9 1 0 is g / cm 3, Chikarari 19 Ot: Oyo Weight 21.18 Mel coating outlet one rate is measured under the condition of N contains ethylene copolymer is 0. 01 ⁇ 1 OgZl 0 minutes It is preferable.
- Component (b 3) it forces preferably a density of 0. 860 ⁇ 0. 910 gZcm 3, more preferably 0. 865 ⁇ 0. 905gZcm 3.
- the density of the component (b3) is 0.860 g / cm 3 or more, a composite molded article having better bonding strength is obtained.
- the density of the component (b3) is 0.91 OgZcm 3 or less, the molded article that is a thermoplastic elastomer fiber (B2) is more excellent in thigh properties. The degree is measured according to JIS K7112 without annealing.
- Component (b 3) preferably has a melt opening rate (hereinafter referred to as MFR) measured at a temperature of 190 and a weight of 21.18 N of 0.01 to: L OgZl 0 min. More preferably, it is 5 to 8 gZl 0 minutes.
- MFR melt opening rate
- thermoplastic elastomer (B2) containing a component (b 3) with an MFR of 1 O gZl for 0 minutes or less By using a thermoplastic elastomer (B2) containing a component (b 3) with an MFR of 1 O gZl for 0 minutes or less, the molded product of the plastic elastomer (B2) is not bonded. It will be better.
- thermoplastic elastomer fiber (B2) in the present invention contains the component (b 1), the component (b 2) and the component (b3)
- the content thereof is 100 parts by weight of the component (bl)
- component (b2) is 50 to 300 parts by weight
- component (b3) is 3 to 100 parts by weight per 100 parts by weight of component (bl). More preferably, the content of component (b 3) is 5 to 90 parts by weight.
- the content of the component (b 3) is 3 parts by weight or more, the resulting composite molded body is superior to the bonded daughter.
- the content of the component (b3) is 100 parts by weight or less, the low-temperature impact characteristics of the molded product obtained by molding the thermoplastic elastomer monofilament (B2) are further improved.
- the IT composition (B2) is injection-molded to form a molded product for $ 3 ⁇ 4i, the mold releasability from the mold is also excellent.
- a polymerization method of ⁇ 0 using an olefin polymerization kit is used. For example, slurry polymerization method, melt polymerization method, bulk polymerization method, mffi polymerization method, etc. using complex catalyst such as cheddarer-Natta series, meta-mouth complex, non-meta-mouth complex, etc. . It is also possible to use commercially available products.
- the thermoplastic elastomer complete product (B2) in the present invention has a curvature ratio of 150 to 800 MPa, preferably 200 to 70 OMPa, and more preferably 250 to 550 MPa. If the curvature rate is too small, the strength of the object (B2) and the shape retention of the molded body may be inferior. If it is excessive, the molded body of the discriminating substance (B2) may be removed. Cover-When used as a molded body, when it is modularized with other airbag parts, its workability may decrease.
- thermoplastic elastomer fiber (B2) is In addition to the component (b 1), the component (b2) and the component (b 3), it is preferable to further contain the following component (b4).
- Compound # 1 consisting of a fatty acid having 5 or more carbon atoms, a metal salt of a fatty acid having 5 or more carbon atoms, an amide of fatty acid having 5 or more carbon atoms, and an ester of fatty acid having 5 or more carbon atoms At least one compound selected from ⁇
- Examples of fats having 5 or more carbon atoms as component (b4) include lauryl, palmitic acid, stearic acid, behenic acid, oleic acid, erucic acid, linoleic acid, and ricinone ⁇ . .
- Component (b4) has 5 or more carbon atoms as the metal salt of the fat J3 male and metals such as Li, Na, Mg, Al, K, Ca, Zn, Ba, and Pb.
- Specific examples of the salt include lithium stearate, sodium stearate, calcium stearate, and zinc stearate.
- Ingredients (b 4) of lipid amides having 5 or more carbon atoms include lauric amide, palmitic acid amide, stearic acid amide, oleic acid amide, L force acid amide, methylenebis stearic acid amide, ethylenebisstearic acid Examples thereof include amide, ethylenebisoleic acid amide, and stearyl diethanolamide. Of these, L-acid amide is preferred.
- Ingredients (b 4) of carbon source 5 or more fatty esters include fatty female alcohols (such as myristyl alcohol, bis, applicationmityl alcohol, stearyl alcohol, behenyl alcohol, 12 hydroxy stearyl alcohol), aromatic Alcohol (benzyl alcohol,) 3-phenylethyl alcohol, phthalyl alcohol, etc., decorative alcohol (darisylin, diglycerin, polyglycerin, sorbitan, sorbitol, propylene glycol)
- esters of the above oils such as glycerin monooleate, glycerin diolate, polyethylene glycol mono Examples include stearate and citrate distearate.
- thermoplastic elastomer single thread (B 2) is based on the balance between the releasability in injection molding and the appearance of the resulting molded product surface. It is preferably 0.001 to 1.5 parts by weight, more preferably 0.02 to 1 part by weight per 0.0 part by weight.
- the thermoplastic elastomer yarn (B 2) is made of an inorganic filler (talc, calcium, «kaolin, etc.), an organic filler ( ⁇ , «, cellulose powder, etc.), a lubricant (silicone oil, Silicone gum, etc.), antioxidants (phenol, io, phosphorus, lactone, vitamins, etc.), weather resistance stabilizer, UV absorber (benzotriazol, triazine, anilide, benzophenone, etc.) , Heat stabilizer, light stabilizer (hindered amine, benzoate, etc.), pigment, nucleating agent, adsorbent (metal oxide (acid (Chemical conversion, magnesium oxide, etc.), metal chlorides (iron chloride, calcium chloride, etc.), hydrated lucsite, aluminium, etc.) may be contained.
- an inorganic filler talc, calcium, «kaolin, etc.
- an organic filler ⁇ , «, cellulose powder, etc.
- a lubricant silicone
- the thermoplastic elastomer disintegrated product (B2) comprises a component (bl) and a component (b2), and optionally a component (b3), a component (b4), and other components. It can be obtained by melting with a brewing machine or a Banbury mixer.
- the above-mentioned thermoplastic elastomer (B2) and polypropylene resin (A2) are each molded by the method described above to obtain a molded product.
- the S ⁇ method of the molded body is not particularly specified, but it is preferable to use injection molding because it can efficiently form a molded body having a difficult shape.
- a method of attaching a molded product made of polypropylene resin (A2) and a molded product made of thermoplastic elastomer (B 2) use a device with a vibration frequency of 50 MHz or higher. It is preferable to weld under the condition that the thickness is 0.1 to 3 mm.
- the composite molded body of the present invention is a bag as an automobile interior part.
- an instrument panel is formed as a molded body made of polypropylene resin (A2)
- an airbag is molded as a molded body made of thermoplastic elastomer (B2), and these are shaken and welded to form an airbag. It is a spider as a body instrument panel.
- A2 polypropylene resin
- B2 thermoplastic elastomer
- component (A 1) ⁇ Plastic elastomer composition is 23
- composition of the ethylene-propylene-based copolymer rubber (B1) was determined by a method using an infrared absorption spectrum (FT-IR 5200 type manufactured by JASCO Corporation) according to ASTM D 3900.
- Injection molding machine IS 100- EN using a side-gate flat plate mold, injection molding of thermoplastic elastomer yarn under conditions of cylinder temperature 220 ° C and mold temperature 50 ° C. An injection-molded body having a length of 90 mm, a width of 150 mm, and a thickness of 2 mm was obtained. For welded properties, an injection-molded body of the same size as above was obtained at the opposing two-point gate.
- test piece with a thickness of 2 mm which was injection-molded under the above conditions, was measured under the conditions of 30 mm span and 1 mmZ bending speed.
- thermoplastic elastomer When PP-2 was used as component (A1), a thermoplastic elastomer was obtained in the same manner as in Example 1. Table 1 shows the measurement results of physical properties of the obtained thermoplastic elastomer and the molded product obtained by injection molding. Examples 2-5 In the same manner as in Example 1, the thermoplastic elastomer having the composition shown in Table 2 was obtained. Table 2 shows the measurement results of physical properties of the obtained thermoplastic elastomer product and a molded product obtained by injection molding the product. Contrast 2-7
- thermoplastic elastomer was obtained in the same manner as in Example 1 except that the composition shown in Table 3 was used.
- Table 3 shows the physical property measurement results of the molded products obtained by injection molding of the thermoplastic elastomer ffifigs and M «.
- polypropylene resin (A2) and plastic elastomer monofilament were measured for MFR at 2.16 kg load at 230.
- the ethylene copolymer (component (b 3)) was measured for MFR at 230 at 2.16 kg load.
- the reduced viscosity is measured using an Ubbelohde viscometer, and is obtained by the outer method using the calculation method described in “Polymer Solution, Polymer Experiments 11” (1 982 published by Kyoritsu Shuppan Co., Ltd.), page 491. It was.
- composition of the ethylene-propylene copolymer rubber (b2) was determined by a method using an infrared absorption spectrum (FT-IR 5200 type, manufactured in Japan) according to ASTM D 3900.
- thermoplastic elastomer fiber (B2) is used to mold thermoplastic elastomer fiber (B2) using side-gate flat plate molds at a cylinder temperature of 220 and a mold temperature of 50.
- the same dog injection-molded body was obtained by injection-molding the polypropylene resin (A2).
- JI S K7171 measurement was performed under the conditions of 30 mm span and bend HmmZ using a 2 mm thick test piece injection molded under the above conditions.
- thermoplastic elastomer composition (B)
- a flat test piece injection-molded under the above conditions is cut into a predetermined size, and leakage welding is performed under a predetermined condition using a vibration welding device (model: 2800 J-DC) manufactured by Branson.
- a composite molded body was obtained.
- Specimens integrated by leak welding Polypropylene resin (A 2) Molded body and thermoplastic elastomer (B2) Composite molded body by molding the molded body by vibration welding) 60mm wide, fix the molded body made of polypropylene resin (A2), fix the molded body of thermoplastic elastomer (B2), pull the molded body, and attach it to the load cell jig of the testing machine.
- the stripping test was conducted at OmmZ, and the maximum value of the stripping daughter was defined as joint i.
- FR (230V) 52g / 10min
- content of ethylene copolymer part ( ⁇ 2) in component (1) 13% by weight
- Some polypropylene polymers (2) Ethylene-propylene copolymer rubber (b2)
- thermoplastic elastomer fiber (B2) As component (bl) (PP-1 1) 100 parts by weight, as component (b2) (rubber 1 1) 80 parts by weight and (rubber-12) 20 parts by weight, 0.1 part by weight of Newtron S) and 0.2 part by weight of antioxidant (b) 3 ⁇ 4M Sumilyzer 1 GA8 0) (Ilgaphos 168 from Ciba Specialty Co., Ltd.) After blending a certain amount of parts and carrying out melting and easting with a Banbury mixer, and processing into pellets, a thermoplastic elastomer fiber (B2) was obtained. Table 4 shows the measurement results of the physical properties of the obtained molded article made of the thermoplastic elastomer (B2) and i3 ⁇ 4a ⁇ .
- thermoplastic elastomer fiber (B2) was obtained in the same manner as in Example 6 except that the components and amounts to be blended were changed as shown in Table 4.
- Table 4 shows the measurement results of the physical properties of the resulting molded product composed of the thermoplastic elastomer (B2) and the destroyed product.
- Example 8
- thermoplastic elastomer product (B2) was obtained in the same manner as in Example 6 except that the components and amounts to be blended were changed as shown in Table 4, a thermoplastic elastomer product (B2) was obtained.
- Table 4 shows the measurement results of the physical properties of the obtained thermoplastic elastomer yarn (B2) and a molded article made of the same. Comparative Example 8 The components and amounts to be blended were changed as shown in Table 4.
- a thermoplastic elastomer fiber (B2) was obtained.
- Table 4 shows the measurement results of the properties of the molded article composed of the thermoplastic elastomer (B2) and the humility obtained. Table 4
- thermoplastic elastomer single yarn (B2) was obtained in the same manner as in Example 6 except that the components and amounts to be blended were changed as shown in Table 5.
- Table 5 shows the measurement results of the properties of the molded product consisting of the thermoplastic elastomer (B2) and Mffi ⁇ obtained.
- the airbag cover molded body of the present invention obtained by injection molding of this thermoplastic elastomer spun product has melt flowability during injection molding, releasability when releasing the molded body from the mold, Air bag cover molded body obtained by injection molding has the required properties such as low temperature fermentation 14 and weld properties.
- thermoplastic elastomer having excellent mechanical properties such as difficulty and property, origami property, and workability when modularizing with other airbag parts, etc.
- a composite molded body is provided in which a body and a molded body made of polypropylene resin are firmly bonded and integrated by adhesion.
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- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Air Bags (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/669,168 US9694522B2 (en) | 2007-07-18 | 2008-07-16 | Thermoplastic elastomer composition and composite molded body |
DE112008001887.1T DE112008001887B4 (de) | 2007-07-18 | 2008-07-16 | Thermoplastische Elastomerzusammensetzung und Formkörper für Airbagabdeckungen |
CN2008800250495A CN101754996B (zh) | 2007-07-18 | 2008-07-16 | 热塑性弹性体组合物及复合成型体 |
Applications Claiming Priority (4)
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JP2007-186711 | 2007-07-18 | ||
JP2007186712A JP5205842B2 (ja) | 2007-07-18 | 2007-07-18 | 熱可塑性エラストマー組成物およびエアバッグカバー成形体 |
JP2007-186712 | 2007-07-18 | ||
JP2007186711 | 2007-07-18 |
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WO2009011448A1 true WO2009011448A1 (ja) | 2009-01-22 |
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PCT/JP2008/063220 WO2009011448A1 (ja) | 2007-07-18 | 2008-07-16 | 熱可塑性エラストマー組成物および複合成形体 |
Country Status (4)
Country | Link |
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US (1) | US9694522B2 (ja) |
CN (1) | CN101754996B (ja) |
DE (1) | DE112008001887B4 (ja) |
WO (1) | WO2009011448A1 (ja) |
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US20110218283A1 (en) * | 2010-03-02 | 2011-09-08 | Nadeem Akhtar Bokhari | Reactor thermoplastic polyolefin elastomer composition |
US20110315200A1 (en) * | 2009-03-09 | 2011-12-29 | Masahiro Asuka | Underside protective sheet for solar cell, solar cell module, and gas-barrier film |
US20120259057A1 (en) * | 2011-04-05 | 2012-10-11 | Sumitomo Chemical Company, Limited | Air bag cover and thermoplastic elastomer composition therefor |
JP2018141092A (ja) * | 2017-02-28 | 2018-09-13 | Mcppイノベーション合同会社 | 熱可塑性エラストマー組成物 |
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BR112018074402B1 (pt) * | 2016-05-31 | 2022-10-18 | Dow Global Technologies Llc | Composição e artigo |
EP3395882B1 (en) * | 2017-04-28 | 2023-06-28 | Sumitomo Chemical Company, Ltd | Thermoplastic elastomer composition, process for producing the thermoplastic elastomer composition and molded body thereof |
US11518881B2 (en) * | 2017-11-13 | 2022-12-06 | Avient Corporation | Polysiloxanes in thermoplastic elastomer compounds for overmolded thermoplastic articles |
KR101943224B1 (ko) * | 2017-12-12 | 2019-01-28 | 한화토탈 주식회사 | 이종 고무 성분을 포함하는 전선용 폴리올레핀 수지 조성물 |
WO2020256000A1 (ja) * | 2019-06-21 | 2020-12-24 | 三井化学株式会社 | 熱可塑性エラストマー組成物および熱可塑性エラストマー成形体 |
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Also Published As
Publication number | Publication date |
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DE112008001887B4 (de) | 2020-10-22 |
US20100207365A1 (en) | 2010-08-19 |
CN101754996A (zh) | 2010-06-23 |
DE112008001887T5 (de) | 2010-05-20 |
US9694522B2 (en) | 2017-07-04 |
CN101754996B (zh) | 2013-01-02 |
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