WO2016039310A1 - 熱可塑性エラストマー組成物及びその成形体 - Google Patents
熱可塑性エラストマー組成物及びその成形体 Download PDFInfo
- Publication number
- WO2016039310A1 WO2016039310A1 PCT/JP2015/075397 JP2015075397W WO2016039310A1 WO 2016039310 A1 WO2016039310 A1 WO 2016039310A1 JP 2015075397 W JP2015075397 W JP 2015075397W WO 2016039310 A1 WO2016039310 A1 WO 2016039310A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- thermoplastic elastomer
- weight
- parts
- elastomer composition
- olefin
- Prior art date
Links
Classifications
-
- 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
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- 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
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
- B29C44/42—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
-
- 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
-
- 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
- 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
- C08J9/06—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 by a chemical blowing agent
-
- 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
- C08J9/06—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 by a chemical blowing agent
- C08J9/08—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 by a chemical blowing agent developing carbon dioxide
-
- 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—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
- B29K2025/04—Polymers of styrene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
-
- 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
- C08J2201/00—Foams characterised by the foaming process
- C08J2201/02—Foams characterised by the foaming process characterised by mechanical pre- or post-treatments
- C08J2201/026—Crosslinking before of after foaming
-
- 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
- C08J2207/00—Foams characterised by their intended use
- C08J2207/06—Electrical wire insulation
-
- 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
- C08J2207/00—Foams characterised by their intended use
- C08J2207/12—Sanitary use, e.g. diapers, napkins or bandages
-
- 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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/16—Ethene-propene or ethene-propene-diene copolymers
-
- 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
- C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2325/02—Homopolymers or copolymers of hydrocarbons
- C08J2325/04—Homopolymers or copolymers of styrene
-
- 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
- C08J2353/00—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
-
- 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
- C08J2353/00—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2353/02—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers of vinyl aromatic monomers and conjugated dienes
-
- 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
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/12—Polypropene
-
- 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
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/16—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
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
-
- 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
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- 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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- 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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- 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
Definitions
- the present invention relates to a thermoplastic elastomer composition and a molded body thereof.
- Thermoplastic elastomers are lightweight and easy to recycle, making them energy- and resource-saving elastomers, especially for automotive parts, industrial machine parts, electrical / electronic parts, and building materials as substitutes for vulcanized rubber and vinyl chloride resin. Widely used.
- thermoplastic elastomers are made from crystalline polyolefins such as ethylene / propylene / non-conjugated diene copolymers (EPDM) and polypropylene, and therefore have a lower specific gravity and heat resistance than other thermoplastic elastomers. Although it is excellent in durability such as aging and weather resistance, further improvements are required depending on applications.
- EPDM non-conjugated diene copolymers
- vulcanized rubber is mainly composed of EPDM, it is easy to contain softeners such as oil and is easy to be softened.
- softeners such as oil
- olefinic thermoplastic elastomers are generally fluid when trying to soften by increasing the rubber component. Decrease occurs and formability deteriorates.
- the vulcanized rubber sponge obtained by foaming the vulcanized rubber can give more flexibility by foaming.
- automobile interior parts are a laminate of a skin material using vinyl chloride resin, polyurethane, and olefinic thermoplastic elastomer, and foamed polyurethane or foamed polypropylene.
- There are complicated processes such as a bonding process, a foaming process, and an integral molding process with a substrate. From the viewpoint of simplifying the process and reducing the weight of parts, studies have been made by foaming thermoplastic elastomers.
- olefinic thermoplastic elastomers are generally difficult to foam.
- Patent Document 1 Patent Document 2, etc.
- the olefinic plastic component is decomposed when dynamically heat-treated in the presence of an organic peroxide, and since the tension at the time of melting is poor, it is easy to defoam and a foam is obtained.
- the rough surface due to defoaming is remarkable at a foaming ratio of about 1.5 times at most.
- Patent Document 3 discloses that the type A hardness of the foamed layer composition in a composite molded body obtained by foaming and injection-molding the foamed layer composition into the polyolefin-based composite resin layer and integrally molding the foamed layer is small ( If it is too soft), when using the composite molded article, a feeling of bottoming out to the polyolefin composite resin layer (base material) (bottoming feeling) occurs, so the type A hardness of the foam layer composition is 60 It is described that the above is preferable.
- thermoplastic elastomer composition in which an olefinic thermoplastic elastomer and a styrene thermoplastic elastomer are blended has been reported (for example, Patent Document 4 and Patent Document 5). Since it is easy to generate and heat resistance is likely to be lowered, an olefin-based thermoplastic elastomer has been mainly formulated and designed.
- An object of the present invention is to provide a thermoplastic elastomer composition that is injection-foamable and flexible and has no bottoming feeling.
- the gist of the present invention is as follows. (1) 35 to 65 parts by weight of an olefin thermoplastic elastomer (A) having a type A hardness (instantaneous value) of 75 or less according to JIS K6253 and a styrene type having a type A hardness (instantaneous value) of 60 or less according to JIS K6253 A composition containing 65 to 35 parts by weight of a thermoplastic elastomer (B) (the total amount of the components (A) and (B) is 100 parts by weight) and having a type A hardness (instantaneous value) of 55 in accordance with JIS K6253 The following thermoplastic elastomer composition.
- A olefin thermoplastic elastomer having a type A hardness (instantaneous value) of 75 or less according to JIS K6253 and a styrene type having a type A hardness (instantaneous value) of 60 or less according to JIS K6253
- thermoplastic elastomer composition according to (1) wherein the compression set after 70 hours at 70 ° C. is 95% or less in accordance with JIS K6262.
- thermoplastic elastomer composition according to (1) or (2) obtained by further adding a foaming agent (C).
- thermoplastic elastomer molded article obtained by molding the thermoplastic elastomer composition according to (1) or (2).
- thermoplastic elastomer composition of the present invention has both flexibility and moldability (injection foaming).
- thermoplastic elastomer composition of the present invention will be specifically described.
- thermoplastic elastomer composition of the present invention contains an olefin-based thermoplastic elastomer (A), a styrene-based thermoplastic elastomer (B), and, if necessary, a foaming agent (C).
- A olefin-based thermoplastic elastomer
- B styrene-based thermoplastic elastomer
- C foaming agent
- thermoplastic elastomer (A) There is no restriction
- thermoplastic elastomer for example, (1) a mixture of (a) peroxide-crosslinked olefin copolymer rubber and (b) peroxide-decomposable olefin-based plastic, or (a) peroxide-crosslinked olefin copolymer rubber, and (b) peroxide Obtained by dynamically heat-treating a mixture of a cracked olefin-based plastic and (c) a non-peroxide rubber-like material and / or (d) a mineral oil-based softener in the presence of an organic peroxide, Partially crosslinked thermoplastic elastomer, (2) (a) peroxide-crosslinked olefin copolymer rubber, (b) peroxide-decomposable olefin-based plastic, (c) peroxide non-crosslinked rubber-like substance and / or (d) mineral oil-
- the (a) peroxide-crosslinked olefin copolymer rubber is mainly composed of olefin such as ethylene / propylene copolymer rubber, ethylene / propylene / non-conjugated diene rubber, ethylene / butadiene copolymer rubber, etc.
- olefin such as ethylene / propylene copolymer rubber, ethylene / propylene / non-conjugated diene rubber, ethylene / butadiene copolymer rubber, etc.
- An amorphous random elastic copolymer that is mixed with a peroxide and cross-linked by kneading under heating, resulting in a decrease in fluidity or non-flowing rubber.
- peroxide-crosslinked olefin copolymer rubber examples include the following rubbers.
- ⁇ -olefin examples include ethylene, propylene, 1-butene, 1-pentene, 3-methyl-1-butene, 1-hexene, 3-methyl-1-pentene, and 4-methyl-1.
- -Pentene, 1-octene and the like examples include ethylene, propylene, 1-butene, 1-pentene, 3-methyl-1-butene, 1-hexene, 3-methyl-1-pentene, and 4-methyl-1.
- non-conjugated diene examples include dicyclopentadiene, cyclooctadiene, methylene norbornene (eg, 5-methylene-2-norbornene), ethylidene norbornene (eg, 5-ethylidene-2-norbornene), methyltetrahydro Cyclic dienes such as indene, 5-vinyl-2-norbornene, 5-isopropylidene-2-norbornene, 6-chloromethyl-5-isopropenyl-2-norbornene, norbornadiene; 1,4-hexadiene, 3-methyl-1 , 4-hexadiene, 4-methyl-1,4-hexadiene, 5-methyl-1,4-hexadiene, 4,5-dimethyl-1,4-hexadiene, 6-methyl-1,6-octadiene, 7-methyl -1,6-octadiene, 6-ethyl-1,6-
- copolymer rubbers have a Mooney viscosity ML 1 + 4 (100 ° C.) of usually 10 to 300, preferably 30 to 250.
- the iodine value when the non-conjugated diene is copolymerized is preferably 25 or less.
- the olefin copolymer rubber can exist in all cross-linked states such as uncrosslinked, partially cross-linked, and completely cross-linked, but in the present invention, it exists in a partially cross-linked state. It is preferable.
- the (b) peroxide-decomposable olefin plastic refers to an olefin plastic that is mixed with peroxide and thermally decomposed by mixing under heating to reduce the molecular weight and increase the fluidity of the resin.
- Examples of the (b) peroxide-decomposable olefin-based plastic include homopolymers or copolymers of ⁇ -olefins having 2 to 20 carbon atoms.
- ⁇ -olefin examples include ethylene, propylene, 1-butene, 1-pentene, 3-methyl-1-butene, 1-hexene, 3-methyl-1-pentene, and 4-methyl-1.
- -Pentene, 1-octene and the like examples include ethylene, propylene, 1-butene, 1-pentene, 3-methyl-1-butene, 1-hexene, 3-methyl-1-pentene, and 4-methyl-1.
- the (b) peroxide-decomposable olefin-based plastic include the following (co) polymers.
- Propylene homopolymer (2) Random copolymer of propylene and other ⁇ -olefin of 10 mol% or less (3) Block copolymer of propylene and other ⁇ -olefin of 30 mol% or less ( 4) 1-butene homopolymer (5) Random copolymer of 1-butene with 10 mol% or less of other ⁇ -olefin (6) 4-methyl-1-pentene homopolymer (7) 4-methyl Random copolymers of -1-pentene and other ⁇ -olefins up to 20 mol%
- the (c) peroxide non-crosslinked rubber-like substance is mixed with a peroxide such as polyisobutylene, butyl rubber, atactic polypropylene, and propylene / ⁇ -olefin copolymer rubber having a propylene content of 50 mol% or more.
- a peroxide such as polyisobutylene, butyl rubber, atactic polypropylene, and propylene / ⁇ -olefin copolymer rubber having a propylene content of 50 mol% or more.
- a hydrocarbon-based rubber-like substance that does not crosslink even when kneaded under heating and does not decrease fluidity.
- the above-mentioned (d) mineral oil-based softening agent is usually used to roll rubber, weaken the intermolecular action force of rubber, facilitate processing, and help disperse carbon black, white carbon, or the like.
- a high-boiling petroleum fraction used for the purpose of increasing the flexibility and elasticity by reducing the hardness of vulcanized rubber, and is classified into paraffinic, naphthenic, aromatic and the like.
- Examples of the mineral oil-based softener include paraffin-based process oil and naphthenic process oil.
- the (e) olefin plastic is ethylene, propylene, 1-butene, 1-pentene, 3-methyl-1-butene, 1-hexene, 3-methyl-1-pentene, 4-methyl-1-pentene.
- Homopolymers or copolymers of ⁇ -olefins such as 1-octene, or copolymers of ⁇ -olefins with small amounts of other polymerizable monomers such as 10 mol% or less, such as ethylene / vinyl acetate copolymer A polymer, an ethylene / acrylic acid copolymer, an ethylene / methacrylic acid copolymer, and the like.
- the rubber used in the present invention in addition to the olefin copolymer rubber, other rubbers such as styrene-butadiene rubber (SBR), nitrile rubber (NBR), natural rubber (NR), butyl rubber (IIR) are used. And diene rubbers.
- SBR styrene-butadiene rubber
- NBR nitrile rubber
- NR natural rubber
- IIR butyl rubber
- diene rubbers diene rubbers.
- the weight blending ratio ((b) / (a)) of (b) peroxide-decomposable olefin plastic and (a) peroxide-crosslinked olefin copolymer rubber is: The range is usually 90/10 to 10/90, preferably 70/30 to 15/85.
- the other rubber is usually 40 parts per 100 parts by weight of the total amount of the peroxide-decomposable olefin plastic and rubber. It is blended at a ratio of not more than parts by weight, preferably 5 to 20 parts by weight.
- thermoplastic elastomer (A) preferably used in the present invention comprises crystalline polypropylene and ethylene / ⁇ -olefin copolymer rubber or ethylene / ⁇ -olefin / non-conjugated diene copolymer rubber. These are thermoplastic elastomers which are present in a partially crosslinked state and have a weight blending ratio of crystalline polypropylene and rubber (crystalline polypropylene / rubber) in the range of 70/30 to 10/90.
- thermoplastic elastomer (A) preferably used in the present invention include 30 to 90 weights of rubber (a-1) made of ethylene / propylene copolymer rubber or ethylene / propylene / diene copolymer rubber. Parts and 70 to 10 parts by weight of crystalline polypropylene (b-1) [the total amount of components (a-1) and (b-1) is 100 parts by weight] and other than the rubber (a-1)
- the rubber (a-1) obtained by dynamically heat-treating a mixture comprising rubber (c) and / or mineral oil softener (d) 5 to 150 parts by weight in the presence of an organic peroxide is partially Cross-linked thermoplastic elastomers.
- organic peroxide examples include dicumyl peroxide, di-tert-butyl peroxide, 2,5-dimethyl-2,5-di- (tert-butylperoxy) hexane, 2,5-dimethyl-2, 5-di- (tert-butylperoxy) hexyne-3,1,3-bis (tert-butylperoxyisopropyl) benzene, 1,1-bis (tert-butylperoxy) -3,3,5-trimethylcyclohexane, n -Butyl-4,4-bis (tert-butylperoxy) valerate, benzoyl peroxide, p-chlorobenzoyl peroxide, 2,4-dichlorobenzoyl peroxide, tert-butylperoxybenzoate, tert-butylperoxyisopropyl carbonate, diacetylperoxy , Lauroyl peroxide, etc. tert
- the organic peroxide is used in a proportion of 0.01 to 5 parts by weight, preferably 0.05 to 3 parts by weight, with respect to 100 parts by weight of the total amount of crystalline polyolefin and rubber.
- divinylbenzene is most preferred in the present invention. Divinylbenzene is easy to handle, has a good compatibility with the crystalline polyolefin and rubber, which are the main components of the cross-linked product, and has a function of solubilizing the organic peroxide. Therefore, a thermoplastic elastomer having a uniform crosslinking effect by heat treatment and a balance between fluidity and physical properties can be obtained.
- the crosslinking aid or polyfunctional vinyl monomer as described above is preferably used in a proportion of 0.01 to 5 parts by weight, particularly 0.05 to 3 parts by weight, based on the entire cross-linked product.
- the crosslinking reaction proceeds too quickly when the amount of the organic peroxide is large, so that the resulting thermoplastic elastomer has fluidity.
- the amount of the organic peroxide is small, the crosslinking aid and the polyfunctional vinyl monomer remain as unreacted monomers in the thermoplastic elastomer, and the thermoplastic elastomer is heated during processing and molding. Changes in physical properties due to history may occur. Therefore, the crosslinking aid and the polyfunctional vinyl monomer should not be added in excess.
- the above “dynamic heat treatment” means kneading each component as described above in a molten state.
- a conventionally known kneading apparatus for example, an open type mixing roll, a non-open type Banbury mixer, an extruder, a kneader, a continuous mixer or the like is used.
- a non-open type kneading apparatus is preferable, and the kneading is preferably performed in an atmosphere of an inert gas such as nitrogen gas or carbon dioxide gas.
- the kneading is desirably performed at a temperature at which the half-life of the organic peroxide used is less than 1 minute.
- the kneading temperature is usually 150 to 280 ° C., preferably 170 to 270 ° C.
- the kneading time is usually 0.5 to 20 minutes, preferably 1 to 10 minutes.
- the shear force applied is typically a shear rate, 10 ⁇ 50,000sec -1, is preferably determined in the range of 100 ⁇ 10,000sec -1.
- the completely crosslinked thermoplastic elastomer can be prepared by changing the conditions such as the amount of organic peroxide used and the kneading time in accordance with the method for preparing the thermoplastic elastomer described in (1) and (2) above. .
- the olefinic thermoplastic elastomer (A) used in the present invention needs to have a type A hardness (instantaneous value) of 75 or less in accordance with JIS K6253.
- a type A hardness instantaneous value
- the type A hardness (instantaneous value) is usually 1 to 73, preferably 1 to 65, more preferably 1 to 60, and particularly preferably 1 to 55.
- styrenic thermoplastic elastomer (B) Specific examples of the styrenic thermoplastic elastomer (B) used in the present invention include styrene / isoprene block copolymers, hydrogenated styrene / isoprene block copolymers (SEP), styrene / isoprene / styrene blocks.
- SEPS Hydrogenated copolymer
- SEBS hydrogenated styrene / butadiene block copolymer
- SEBS hydrogenated styrene / butadiene block copolymer
- the styrenic thermoplastic elastomer (B) used in the present invention needs to have a type A hardness (instantaneous value) of 60 or less in accordance with JIS K6253.
- a type A hardness instantaneous value
- the type A hardness (instantaneous value) is preferably 1 to 50.
- the (A) / (B) is preferably 37/63 to 63/37, more preferably 40/60 to 60/40, still more preferably 45/55 to 55/45.
- thermoplastic elastomer composition of the present invention needs to have a type A hardness (instantaneous value) of 55 or less in accordance with JIS K6253.
- type A hardness instantaneous value
- the obtained foamed molded product is hard and has no soft feeling.
- the thermoplastic elastomer composition of the present invention preferably has a compression set of 95% or less after 24 hours at 70 ° C. in accordance with JIS K6262.
- Ordinary leather products may be said to be valuable over time to deform and adapt to the user's body (hands, feet, etc.). From that point of view, the compression set is zero when the material is not sluggish even when used for a long time (maintains elasticity), more specifically, compression set after 24 hours at 70 ° C. in accordance with JIS K6262. It is preferable that the strain is 5% or more.
- thermoplastic elastomer composition The thermoplastic elastomer composition of the present invention is produced by melt-kneading the olefin-based thermoplastic elastomer (A), the styrene-based thermoplastic elastomer (B), and, if necessary, the foaming agent (C) and other components. can do.
- a mixing roll and an intensive mixer for example, a Banbury mixer, a kneader
- a single-screw or twin-screw extruder can be used, and a non-open type apparatus is preferable.
- the thermoplastic elastomer composition of the present invention is preferably foamed by adding a foaming agent (C) as necessary.
- a foaming agent (C) include inorganic or organic pyrolytic foaming agents (chemical foaming agents), carbon dioxide, nitrogen, and a mixture of carbon dioxide and nitrogen.
- Examples of the inorganic pyrolytic foaming agent include inorganic carbonates such as sodium hydrogen carbonate, sodium carbonate, ammonium hydrogen carbonate and ammonium carbonate, and nitrites such as ammonium nitrite.
- Organic pyrolytic foaming agents include N, N′-dimethyl-N, N′-dinitrosotephthalamide, nitroso compounds such as N, N′-dinitrosopentamethylenetetramine; azodicarbonamide, azobisiso Azo compounds such as butyronitrile, azocyclohexyl nitrile, azodiaminobenzene, barium azodicarboxylate; benzenesulfonyl hydrazide, toluenesulfonyl hydrazide, p, p'-oxybis (benzenesulfonyl hydrazide), diphenylsulfone-3,3 Sulfonyl hydrazide compounds such as' -disulfonylhydrazide; azide compounds such as calcium azide, 4,4'-diphenyldisulfonyl azide, p-toluenesulfonyl azide,
- thermoplastic elastomer composition for foaming When carbon dioxide or nitrogen is used, the thermoplastic elastomer composition for foaming is melted at 100 to 300 ° C. in a resin plasticizing cylinder, and the thermoplastic elastomer composition for foaming and carbon dioxide or nitrogen are compatible. A melt-foamable thermoplastic elastomer composition in a state is formed.
- the foaming agent (C) is usually used in a proportion of 0.5 to 30 parts by weight, preferably 1 to 20 parts by weight, based on 100 parts by weight of the thermoplastic elastomer composition for foaming.
- a foaming aid can be added.
- the amount added is usually 0.01 to 10 parts by weight, preferably 0.02 to 5 parts by weight, per 100 parts by weight of the thermoplastic elastomer composition for foaming.
- foaming aid examples include metal compounds such as zinc, calcium, lead, iron and barium, higher fatty acids such as stearic acid and metal salts thereof, and fine inorganic particles such as talc, barium sulfate and silica.
- polyvalent acids such as citric acid, oxalic acid, fumaric acid, phthalic acid, malic acid, tartaric acid, cyclohexane 1,2-dicarboxylic acid, camphoric acid, ethylenediaminetetraacetic acid, triethylenetetramine hexaacetic acid and nitrilotriacetic acid
- inorganic carbonate compounds such as sodium hydrogen carbonate, sodium aluminum hydrogen carbonate and potassium hydrogen carbonate, and intermediates produced by these reactions, for example, polyvalent carboxylic acids such as sodium dihydrogen citrate and potassium oxalate Examples include acid salts.
- the foaming auxiliary agent has functions such as lowering the decomposition temperature of the foaming agent, accelerating the decomposition, forming foam nuclei, and uniforming the bubbles, and is generally preferably used.
- a compound that decomposes at about the extrusion temperature at the time of raw material pellets or the melting temperature of the foam has the effect of forming the foam cell diameter finely and uniformly.
- thermoplastic elastomer composition of the present invention using the body disodium citrate.
- foaming agents or foaming aids may be dry blended before injection molding and decomposed during injection molding, or may be added after melt blending into pellets in advance.
- the method for preparing the foam from the thermoplastic elastomer composition of the present invention is not particularly limited, and using a molding machine used in a known resin processing method, extrusion molding, press molding, injection molding, blow molding, It can be prepared by extrusion blow molding, injection blow molding, inflation molding, stamping mold molding, compression molding and bead molding.
- An example is a method of preparing a foamed molded article by an extrusion molding method using carbon dioxide in a supercritical state as a foaming agent. That is, the thermoplastic elastomer composition of the present invention is melted with an extruder, and the temperature of carbon dioxide is increased within the range of the critical pressure (7.4 to 40 MPa) to the critical temperature of carbon dioxide (31 ° C.) or higher. Supercritical carbon dioxide is then mixed with the molten thermoplastic elastomer composition in an extruder.
- thermoplastic elastomer composition mixed with supercritical carbon dioxide is transferred to a die connected to the tip of the extruder set to the optimum foaming temperature, extruded from the die into the atmosphere, and the pressure is rapidly reduced. Then, carbon dioxide is gasified and foamed, and then cooled and solidified by a subsequent cooling device to obtain the desired foamed molded product.
- the temperature of the thermoplastic elastomer composition during extrusion is preferably in the range of 110 to 250 ° C.
- thermoplastic elastomer composition a method for preparing a foamed molded article by a press molding method will be described as an example. That is, the chemical foaming agent and the pellets of the thermoplastic elastomer composition are placed in a heated mold of a press molding machine, and the thermoplastic elastomer composition is applied with or without applying mold pressure. After melting, foaming is performed to form a foamed molded article. At this time, the temperature of the mold is preferably in the range of 110 to 250 ° C.
- thermoplastic elastomer foam molded article of the present invention by an injection molding method. That is, there is a method in which a thermoplastic elastomer composition is heated and melted with an injection molding machine, and then injected into a mold so as to be foamed at a nozzle tip, thereby forming a foamed molded product.
- the resin temperature during injection is preferably in the range of 110 to 250 ° C.
- thermoplastic elastomer composition of the present invention has high fluidity, it is preferable to form a foam molded article by an injection molding method. Further, after the injection molding is completed, the injection molding mold injects the thermoplastic elastomer composition into the cavity, and after the injection is completed, the movable mold is maintained while maintaining the contact with the mold wall surface by the expansion of the resin by the foaming gas. Is moved, and the movable mold is stopped at a preset reference thickness position for molding. After completion of cooling of the mold, injection foam molding with a core back obtained by retracting the movable mold and taking out the product is preferable.
- thermoplastic elastomer composition of the present invention contains components other than the olefin thermoplastic elastomer (A), styrene thermoplastic elastomer (B), and foaming agent (C), for example, other conventionally known resins. It can mix
- resins include homopolymers or copolymers of ⁇ -olefins having 2 to 20 carbon atoms.
- ⁇ -olefin examples include ethylene, propylene, 1-butene, 1-pentene, 3-methyl-1-butene, 1-hexene, 3-methyl-1-pentene, and 4-methyl-1.
- -Pentene, 1-octene and the like examples include ethylene, propylene, 1-butene, 1-pentene, 3-methyl-1-butene, 1-hexene, 3-methyl-1-pentene, and 4-methyl-1.
- the other resin include the following (co) polymers.
- Ethylene homopolymer (The production method may be either a low pressure method or a high pressure method) (2) Copolymer of ethylene and other ⁇ -olefin of 10 mol% or less or vinyl monomer such as vinyl acetate or ethyl acrylate (3) Propylene homopolymer (4) Propylene and other of 10 mol% or less of other Random copolymer with ⁇ -olefin (5) Block copolymer with propylene and other ⁇ -olefin of 30 mol% or less (6) 1-butene homopolymer (7) 1-butene with 10 mol% or less Random Copolymers with Other ⁇ -Olefins (8) 4-Methyl-1-pentene Homopolymer (9) Random Copolymers of 4-Methyl-1-pentene with 20 mol% or Less of Other ⁇ -Olefins Polymer
- the other resin is preferably a polypropylene homopolymer or copolymer of the above (3) to (5), which may have an isotactic structure or a syndiotactic structure. It may also be a blend of both.
- the polypropylene homopolymer or copolymer of (3) to (5) has a melting point obtained by differential scanning calorimetry (DSC) of usually 40 to 170 ° C., preferably 50 to 167 ° C., more preferably 60 to 165 ° C. Have in range.
- the melting point was measured by DSC when the sample was held at 200 ° C. for 5 minutes, then the temperature was lowered to ⁇ 20 ° C. at a temperature drop rate of ⁇ 20 ° C./min, and again raised to 180 ° C. at a temperature rise rate of 20 ° C./min. Do. It is preferable that the polypropylene or the copolymer of (3) to (5) has a melting point within the above range because sufficient heat resistance can be obtained.
- the melt flow rate (MFR; ASTM D 1238-65T, 230 ° C., load 2.16 kg) of the polypropylene homopolymer or copolymer of (3) to (5) is usually 0.01 to 100 g / 10 min, preferably 0.05 to 70 g / 10 min.
- the method for producing the polypropylene homopolymer or copolymer of (3) to (5) is not particularly limited, and a known production method can be used.
- thermoplastic elastomer composition of the present invention the polypropylene of the above (3) to (5) alone or in combination with respect to 100 parts by weight of the total amount of the olefin thermoplastic elastomer (A) and the styrene thermoplastic elastomer (B).
- a thermoplastic elastomer composition having both flexibility and moldability (injection foaming property) can be obtained.
- the polypropylene homopolymer or copolymer of (3) to (5) preferably contains a polypropylene having a melt tension value at 190 ° C. of 3 g or more.
- Melt tension is measured using a capillary rheometer at an extrusion temperature of 190 ° C., an extrusion speed of 10 mm / min, an extrusion nozzle diameter of 2.095 mm, a nozzle length of 8 mm, and a take-up speed of 4 m / min.
- Examples of the polypropylene having a melt tension value of 3 g or more at 190 ° C. include, for example, a broad molecular weight distribution type partly containing a high molecular weight component, a part containing a long chain branching component by electron beam crosslinking, and a partly crosslinked type. And those containing polypropylene. Among these, considering the foamability, appearance, and recyclability of the molded product, a wide molecular weight distribution type partly containing a high molecular weight component is preferable.
- the intrinsic viscosity [ ⁇ ] of this high molecular weight component is usually 3 to 15 dl / g, preferably 4 to 14 dl / g, more preferably 5 to 13 dl / g, and usually 1 to 49% by weight in polypropylene, preferably Is contained in an amount of 3 to 45% by weight, more preferably 5 to 40% by weight.
- the molecular weight distribution (Mw / Mn) of polypropylene having a melt tension value of 3 g or more at 190 ° C. is usually 5 to 20, preferably 6 to 18, and more preferably 7 to 15.
- the melt flow rate (MFR; ASTM D 1238-65T; 230 ° C., load 2.16 kg) of polypropylene having a melt tension value at 190 ° C. of 3 g or more is usually 0.01 to 100 g / 10 min, preferably 0.05. ⁇ 50 g / 10 min.
- the polypropylene having a melt tension value at 190 ° C. of 3 g or more is usually 1 to 60 parts by weight, preferably 3 to 55 parts by weight in 100 parts by weight of the polypropylene homopolymer or copolymer of (3) to (5). More preferably, it is contained in an amount of 5 to 50 parts by weight.
- the total blending amount of the polypropylene alone or copolymer of (3) to (5) added as the other resin and the polypropylene alone or copolymer in the olefinic thermoplastic elastomer (A) is the olefinic heat.
- the amount is preferably 5 to 30 parts by weight based on 100 parts by weight of the total amount of the plastic elastomer (A) and the styrenic thermoplastic elastomer (B).
- thermoplastic elastomer composition of the present invention components other than the olefin thermoplastic elastomer (A), styrene thermoplastic elastomer (B), and foaming agent (C), for example, conventionally known inorganic fillers, Reinforcing materials, softeners, heat stabilizers (processing heat stabilizers), anti-aging agents, weathering stabilizers, antistatic agents, crystal nucleating agents, colorants, lubricants, and other additives that do not impair the purpose of the present invention Can be blended.
- conventionally known inorganic fillers Reinforcing materials, softeners, heat stabilizers (processing heat stabilizers), anti-aging agents, weathering stabilizers, antistatic agents, crystal nucleating agents, colorants, lubricants, and other additives that do not impair the purpose of the present invention.
- the total amount of inorganic filler, reinforcing material, softener, heat stabilizer (processing heat stabilizer), anti-aging agent, weathering stabilizer, antistatic agent, crystal nucleating agent, colorant and lubricant is the thermoplasticity of the present invention.
- the amount is usually 100 parts by weight or less, preferably 50 parts by weight or less with respect to 100 parts by weight of the total amount of the elastomer composition.
- the total amount of the olefinic thermoplastic elastomer (A) and the styrene thermoplastic elastomer (B) is usually 50 to 100 parts by weight, preferably 100 parts by weight based on the total amount of the thermoplastic elastomer composition of the present invention. Is 65 to 100 parts by weight.
- the softener is a softener usually used for rubber.
- petroleum-based substances such as process oil, lubricating oil, paraffin, liquid paraffin, petroleum asphalt and petroleum jelly; synthetic oil such as low molecular weight ethylene / ⁇ -olefin random copolymer; coal tar and coal tar pitch Coal tars such as castor oil, linseed oil, rapeseed oil, soybean oil and coconut oil; waxes such as tall oil, beeswax, carnauba wax and lanolin; ricinoleic acid, palmitic acid, stearic acid, stearic acid Fatty acids such as barium and calcium stearate or metal salts thereof; synthetic polymer materials such as petroleum resins, coumarone indene resins and atactic polypropylene; ester plasticizers such as dioctyl phthalate, dioctyl adipate and dioctyl sebacate; other microcrystalline waxes ,
- thermoplastic elastomer composition of the present invention When a softening agent is added to the thermoplastic elastomer composition of the present invention, it may be added during the production of the thermoplastic elastomer composition, or may be added in advance to the olefin-based thermoplastic elastomer (A), styrene-based thermoplastic elastomer ( B)
- a softener may be added to the ethylene / ⁇ -olefin / non-conjugated polyene copolymer rubber used as the base of the olefin-based thermoplastic elastomer (A), but is not limited thereto.
- the softening agent is usually 20 to 130 parts by weight, preferably 22 to 128 parts by weight, more preferably 24 to 128 parts by weight based on 100 parts by weight of the total of the olefinic thermoplastic elastomer (A) and the styrene thermoplastic elastomer (B).
- the amount used is 126 parts by weight.
- the softening agent is contained in the thermoplastic elastomer composition of the present invention, it is preferable in terms of obtaining foamability and flexibility.
- lubricant examples include higher fatty acid amides, metal soaps, waxes, silicone oils, fluoropolymers and the like. Of these, higher fatty acid amides, silicone oils and fluoropolymers are preferred.
- Higher fatty acid amides include saturated fatty acid amides such as lauric acid amide, palmitic acid amide, stearic acid amide, and behemic acid amide; unsaturated fatty acid amides such as erucic acid amide, oleic acid amide, brassic acid amide, and elaidic acid amide.
- Bis fatty acid amides such as methylene bis stearic acid amide, methylene bis oleic acid amide, ethylene bis stearic acid amide and ethylene bis oleic acid amide;
- silicone oil examples include dimethyl silicone oil, phenylmethyl silicone oil, alkyl silicone oil, fluorosilicone oil, tetramethyltetraphenyltrisiloxane, and modified silicone oil.
- fluorine-based polymer examples include polytetrafluoroethylene, vinylidene fluoride copolymer, and the like.
- the inorganic filler include calcium carbonate, calcium silicate, clay, kaolin, talc, silica, diatomaceous earth, mica powder, asbestos, alumina, barium sulfate, aluminum sulfate, calcium sulfate, and basic magnesium carbonate. , Molybdenum disulfide, graphite, glass fiber, glass sphere, shirasu balloon, basic magnesium sulfate whisker, calcium titanate whisker, aluminum borate whisker, and the like.
- the crosslinked rubber in the olefin-based thermoplastic elastomer (A) contributes to imparting flexibility and heat resistance.
- Styrenic thermoplastic elastomer (B) also contributes to imparting flexibility.
- the resin component in the olefinic thermoplastic elastomer (A) for example, the (b) peroxide-decomposable olefinic plastic
- the styrene thermoplastic elastomer (B) contribute to bubble growth during foam molding.
- fine bubbles can be obtained.
- it since it has both flexibility and injection foamability, it becomes a thermoplastic elastomer composition that is flexible and does not have a feeling of bottoming.
- thermoplastic elastomer composition of the present invention can be produced by various known molding methods, specifically, by various methods such as extrusion molding, press molding, injection molding, calendar molding, and hollow molding building. It can be. Furthermore, a molded body such as a sheet obtained by the molding method can be subjected to secondary processing by thermoforming or the like.
- thermoplastic elastomer molded body of the present invention is not particularly limited in its application, but for various known applications such as automotive parts, civil engineering / building materials, electrical / electronic components, hygiene products, films / sheets, etc. Is preferred.
- thermoplastic elastomer molded body of the present invention examples include automobile interior parts and automobile exterior parts.
- automobile interior parts and automobile exterior parts For example, weather strip materials, bumper moldings, side moldings, air spoilers, air duct hoses, wire harness grommets, racks. Andpinion boots, suspension cover boots, glass guides, inner belt line seals, corner moldings, glass encapsulation, hood seals, glass run channels, secondary seals, various packings, hoses, etc. can be exemplified, among which the thermoplasticity of the present invention Since the elastomer composition is excellent in injection molding and injection foam molding, a molded product obtained by injection molding or injection foam molding is particularly preferable.
- thermoplastic elastomer molded body of the present invention includes, for example, ground improvement sheets, waterworks, noise prevention and other civil engineering materials and building materials, various civil engineering / architectural gaskets and sheets, waterstops, etc. Examples thereof include materials, joint materials, and window frames for construction.
- thermoplastic elastomer composition of the present invention is excellent in injection molding and injection foam molding, a molded product obtained by injection molding or injection foam molding is particularly preferable.
- thermoplastic elastomer molded article of the present invention examples include electric / electronic parts such as wire coating materials, connectors, caps, plugs, etc.
- the thermoplastic elastomer composition of the present invention can be exemplified. Is excellent in injection molding and injection foaming moldability, and a molded product obtained by injection molding or injection foaming molding is particularly preferable.
- thermoplastic elastomer molded body of the present invention examples include sanitary products such as sanitary products, disposable diapers, and toothbrush grips.
- the thermoplastic elastomer composition of the present invention includes injection molding and A molded product obtained by injection molding or injection foam molding is particularly preferred because of excellent injection foam molding properties.
- thermoplastic elastomer molded article of the present invention examples include, for example, infusion bags, medical containers, automotive interior and exterior materials, beverage bottles, clothing cases, food packaging materials, food containers, retort containers, pipes, transparent A base, a sealant, etc. can be illustrated, and among them, the thermoplastic elastomer composition of the present invention is excellent in injection molding and injection foam molding, and thus a molded product obtained by injection molding or injection foam molding is particularly preferable.
- thermoplastic elastomer molded article of the present invention examples include, for example, footwear such as shoe soles and sandals, swimming fins, underwater glasses, golf club grips, baseball bat grips and other leisure goods, gaskets, and waterproof cloths. Belts, garden hoses, anti-slip tapes for stairs, non-slip tapes for logistics pallets, and the like.
- thermoplastic elastomer molded body of the present invention is not limited to the above use, and can be used for various uses.
- MFR (g / 10 min) MFR was measured at 230 ° C. with a load of 2.16 kgf according to ASTM D 1238.
- Test conditions were measured using a laminated sheet with a thickness of 12 mm (six pieces of 2 mm thick pieces) under conditions of 25% compression, 70 ° C., 24 hours, and 30 minutes after strain (compression) removal. did.
- the state of the foam layer was evaluated as follows. ⁇ Bubbles are uniform and no bubble breaks or tears. ⁇ Bubbles are partially uneven, but no bubbles are broken or broken. ⁇ : The bubbles are not uniform, and some of the bubbles are broken or broken. X The bubble is severely broken or torn, or the bubble is swollen and cannot be evaluated. As evaluated.
- Styrenic thermoplastic elastomer (B) (2-1): Styrenic thermoplastic elastomer (St-1) Product name Septon (trademark) 2063 (manufactured by Kuraray): Shore A hardness according to JIS K6253: 36) (2-2): Styrenic thermoplastic elastomer (St-2) Product name EARNESTON (trademark) JS20N (manufactured by Kuraray): (Shore A hardness according to JIS K6253: 1) (2-3): Styrenic thermoplastic elastomer (St-3) Product name Tuftec TM H1221 (manufactured by Asahi Kasei Chemicals): (Shore A hardness according to JIS K6253: 42) (2-4): Styrenic thermoplastic elastomer (St-4) Product name Tuftec TM H1062 (Asahi Kasei Chemicals): (Shore A hardness according to JIS K6253
- thermoplastic elastomer composition 2 parts by weight of a chemical foaming agent Hydrocerol (trademark) CF (manufactured by Clariant) is added as a foaming agent to 100 parts by weight of the obtained thermoplastic elastomer composition, and an injection molding machine (core machine) having a core back mechanism. Molding was performed using a 150-ton injection molding machine manufactured by Seisakusho. At an injection temperature of 220 ° C and a mold temperature of 50 ° C, the gap of the mold is set to 2.5 mm. After the molten resin is injected into the mold and filling is completed, the movable mold is moved 2 mm to increase the internal volume of the gap. The molded body was taken out after the cooling was completed. The obtained molded body had a thickness of 4.5 mm, and a 5 cm square (vertical / horizontal) test piece was prepared and used for various evaluation tests.
- Hydrocerol trademark
- thermoplastic elastomer composition and the foamed molded product were evaluated according to the method described above. The results are shown in Table 1.
- thermoplastic elastomer composition of the present invention has both flexibility and moldability (injection foaming).
- thermoplastic elastomer composition of the present invention had a type A hardness (instantaneous value) of 55 or less, but almost no feeling of bottoming of the obtained foamed molded article was recognized.
Abstract
Description
(1)JIS K6253に準拠するタイプA硬度(瞬間値)75以下のオレフィン系熱可塑性エラストマー(A)35~65重量部と、JIS K6253に準拠するタイプA硬度(瞬間値)60以下のスチレン系熱可塑性エラストマー(B)65~35重量部(成分(A)及び(B)の合計量は100重量部である)を含む組成物であり、JIS K6253に準拠するタイプA硬度(瞬間値)55以下の熱可塑性エラストマー組成物。
(2)JIS K6262に準拠する70℃24時間後の圧縮永久歪が95%以下である前記(1)に記載の熱可塑性エラストマー組成物。
(3)更に発泡剤(C)を添加して得られた前記(1)又は(2)に記載の熱可塑性エラストマー組成物。
(4)前記(1)又は(2)に記載の熱可塑性エラストマー組成物を成形して得られる熱可塑性エラストマー成形体。
(5)前記(3)に記載の熱可塑性エラストマーを成形して得られる熱可塑性エラストマー発泡成形体。
本発明で用いられるオレフィン系熱可塑性エラストマー(A)としては、特に制限はなく、例えば従来公知のポリオレフィン系の完全又は部分架橋熱可塑性エラストマーが用いられる。
(1)(a)ペルオキシド架橋型オレフィン系共重合体ゴムと、(b)ペルオキシド分解型オレフィン系プラスチックとからなる混合物、又は(a)ペルオキシド架橋型オレフィン系共重合体ゴムと、(b)ペルオキシド分解型オレフィン系プラスチックと、(c)ペルオキシド非架橋型ゴム状物質及び/又は(d)鉱物油系軟化剤とからなる混合物を、有機ペルオキシドの存在下に動的に熱処理して得られた、部分的に架橋された熱可塑性エラストマー、
(2)(a)ペルオキシド架橋型オレフィン系共重合体ゴムと、(b)ペルオキシド分解型オレフィン系プラスチックと、(c)ペルオキシド非架橋型ゴム状物質及び/又は(d)鉱物油系軟化剤とからなる混合物を、有機ペルオキシドの存在下に動的に熱処理して得られた架橋されたゴム組成物に、(e)オレフィン系プラスチックを均一に配合せしめた、部分的に架橋された熱可塑性エラストマー等が挙げられる。
(1)エチレン・α-オレフィン共重合体ゴム
[エチレン/α-オレフィン(モル比)=約95/5~50/50]
(2)エチレン・α-オレフィン・非共役ジエン共重合体ゴム
[エチレン/α-オレフィン(モル比)=約95/5~50/50]
(1)プロピレン単独重合体
(2)プロピレンと10モル%以下の他のα-オレフィンとのランダム共重合体
(3)プロピレンと30モル%以下の他のα-オレフィンとのブロック共重合体
(4)1-ブテン単独重合体
(5)1-ブテンと10モル%以下の他のα-オレフィンとのランダム共重合体
(6)4-メチル-1-ペンテン単独重合体
(7)4-メチル-1-ペンテンと20モル%以下の他のα-オレフィンとのランダム共重合体
本発明で用いられるスチレン系熱可塑性エラストマー(B)としては、具体的には、スチレン・イソプレンブロック共重合体、スチレン・イソプレンブロック共重合体の水添物(SEP)、スチレン・イソプレン・スチレンブロック共重合体の水添物(SEPS;ポリスチレン・ポリエチレン/プロピレン・ポリスチレンブロック共重合体)、スチレン・ブタジエン共重合体、スチレン・ブタジエンブロック共重合体の水添物(SEBS;ポリスチレン・ポリエチレン/ブチレン・ポリスチレンブロック共重合体)等が挙げられ、より具体的には、セプトン[クラレ(株)製]、EARNESTON[クラレプラスチック(株)製]、ハイブラー(HYBRAR)[クラレ(株)製]、クレイトン(KRATON)、クレイトンG[Kraton Polymer社製]、ユーロプレンSOLT[Versalis社製]、JSR-TR、JSR-SIS[JSR(株)製]、クインタック[日本ゼオン(株)製]、タフテック[旭化成工業(株)製](以上商品名)等が挙げられる。
本発明の熱可塑性エラストマー組成物は、オレフィン系熱可塑性エラストマー(A)、スチレン系熱可塑性エラストマー(B)、及び必要に応じて、発泡剤(C)、更にその他の成分を溶融混練して製造することができる。
(1)エチレン単独重合体(製法は、低圧法、高圧法のいずれでもよい)
(2)エチレンと、10モル%以下の他のα-オレフィン又は酢酸ビニル、エチルアクリレート等のビニルモノマーとの共重合体
(3)プロピレン単独重合体
(4)プロピレンと10モル%以下の他のα-オレフィンとのランダム共重合体
(5)プロピレンと30モル%以下の他のα-オレフィンとのブロック共重合体
(6)1-ブテン単独重合体
(7)1-ブテンと10モル%以下の他のα-オレフィンとのランダム共重合体
(8)4-メチル-1-ペンテン単独重合体
(9)4-メチル-1-ペンテンと20モル%以下の他のα-オレフィンとのランダム共重合体
オレフィン系熱可塑性エラストマー(A)中の架橋ゴム(例えば、前記の(a)ペルオキシド架橋型オレフィン系共重合体ゴム)は、柔軟性付与と耐熱性付与に寄与する。スチレン系熱可塑性エラストマー(B)も柔軟性付与に寄与する。また、オレフィン系熱可塑性エラストマー(A)中の樹脂成分(例えば、前記の(b)ペルオキシド分解型オレフィン系プラスチック)と、スチレン系熱可塑性エラストマー(B)は、発泡成形時に気泡の成長に寄与し、本発明にしたがった組成により微細な気泡を得ることができる。このように柔軟性と射出発泡性を兼ね備えることから、柔軟で底付き感のない熱可塑性エラストマー組成物となる。
本発明の熱可塑性エラストマー組成物は、種々公知の成形方法、具体的には、例えば、押出成形、プレス成形、射出成形、カレンダー成形、中空成形棟の各種の成形方法により、熱可塑性エラストマー成形体とすることができる。更に、前記成形方法で得られたシートなど成形体を熱成形などで二次加工することができる。
本発明の熱可塑性エラストマー成形体の使用しえる自動車部品としては、自動車内装部品、自動車外装部品があり、例えば、ウェザーストリップ材、バンパーモール、サイドモール、エアスポイラー、エアダクトホース、ワイヤーハーネスグロメット、ラックアンドピニオンブーツ、サスペンションカバーブーツ、ガラスガイド、インナーベルトラインシール、コーナーモールディング、グラスエンキャプシュレーション、フードシール、グラスランチャンネル、セカンダリーシール、各種パッキン類、ホース等を例示でき、中でも本発明の熱可塑性エラストマー組成物は、射出成形や射出発泡成形性に優れるため、射出成形や射出発泡成形で得られる成形品が特に好ましい。
本発明の熱可塑性エラストマー成形体の使用しえる土木・建材用品としては、例えば、地盤改良用シート、上水板、騒音防止等の土木資材や建材、土木・建築用各種ガスケット及びシート、止水材、目地材、建築用窓枠などを例示できる。中でも本発明の熱可塑性エラストマー組成物は、射出成形や射出発泡成形性に優れるため、射出成形や射出発泡成形で得られる成形品が特に好ましい。
本発明の熱可塑性エラストマー成形体の使用しえる電気・電子部品としては、例えば、電線被覆材、コネクター、キャップ、プラグ等の電気・電子部品などを例示でき、中でも本発明の熱可塑性エラストマー組成物は、射出成形や射出発泡成形性に優れるため、射出成形や射出発泡成形で得られる成形品が特に好ましい。
本発明の熱可塑性エラストマー成形体の使用しえる衛生用品としては、例えば生理用品、使い捨ておむつ、歯ブラシ用グリップ等の衛生用品などを例示でき、中でも本発明の熱可塑性エラストマー組成物は、射出成形や射出発泡成形性に優れるため、射出成形や射出発泡成形で得られる成形品が特に好ましい。
本発明の熱可塑性エラストマー成形体の使用しえるフィルム・シートとしては、例えば、輸液バッグ、医療容器、自動車内外装材、飲料ボトル、衣装ケース、食品包材、食品容器、レトルト容器、パイプ、透明基盤、シーラントなどを例示でき、中でも本発明の熱可塑性エラストマー組成物は、射出成形や射出発泡成形性に優れるため、射出成形や射出発泡成形で得られる成形品が特に好ましい。
本発明の熱可塑性エラストマー成形体の使用しえるその他用途としては、例えば、靴底、サンダル等の履物、水泳用フィン、水中メガネ、ゴルフクラブグリップ、野球バットグリップ等のレジャー用品、ガスケット、防水布、ベルト、ガーデンホース、階段用滑り止めテープ、物流用パレットの滑り止めテープなどを例示できる。
以下において実施した物性の測定方法及び評価方法は次のとおりである。
MFRは、ASTM D 1238に準拠して、230℃で2.16kgfの荷重にて測定した。
JIS K6253に準拠して、厚さ2mmのプレスシートを用い、厚み6mm(厚み2mm片の3枚重ね)の積層されたシートを用いてショアーA硬度計により測定した。ショアーA硬度については、測定直後の値(瞬間値)を求めた。
JIS K6250に準拠して、作成したシートを積層し、JIS K6262に準拠して圧縮永久ひずみ試験を行った。
得られた発泡成形品の発泡層を切断し、気泡生成状態を実体顕微鏡(10倍)にて観察した。
◎ 気泡の状態が均一で、気泡の破れ、裂け等がみられない。
○ 気泡の状態が一部不均一であるが、気泡の破れ、裂け等がみられない。
△ 気泡の状態が不均一であり、気泡の破れ、裂け等が一部みられる。
× 気泡の破れ、裂け等が激しい、又は膨れが発生し、評価不能である。
として評価した。
得られた発泡成形品の外観を目視にて下記の基準で評価した。
◎ ヒケ、アバタ又はウエルドライン等の凹みがなく、平滑である
○ ヒケ、アバタ又はウエルドライン等の凹みがない
× 前記不良がみられ、実用上問題となる
得られた発泡成形品の表面を指で押して下記の基準で評価した。
◎ 指で押し込むのにあまり力が必要なく柔らかく、良好なソフト感を有するもの
○ 指で押し込むのにやや力が必要だが良好なソフト感を有するもの
× 樹脂成形品のように硬く、指で押し込むのにかなり力が必要でソフト感がないもの
得られた発泡成形品の表面に指を滑らして触った際に下記の基準で評価した。
○ 触った際に指に成形品表面がくっつかず、引っ掛かりを感じない
× 触った際に指に成形品表面がくっつき、引っ掛かりを感じる
得られた発泡成形品を指で押した際に下記の基準で評価した。
○ 押込み直後から適度な反発力があり、成形品底部の硬さを感じない
× 成形品が硬く指で押し込むことが難しい、又は、押込み直後に成形品底部まで到達し硬さを感じる
(成形材料)
(1)オレフィン系熱可塑性エラストマー(A)
(1-1):オレフィン系熱可塑性エラストマー(TPV-1)
ペルオキシド架橋型オレフィン系共重合体ゴムとしてエチレン・プロピレン・ジエン共重合体ゴム:商品名 三井EPT(商標)3072EPM(三井化学社製)65重量部、ペルオキシド分解型オレフィン系プラスチックとしてプロピレン・エチレンブロック共重合体:商品名 プライムポリプロ(商標)J707G(プライムポリマー製)15重量部、ペルオキシド非架橋型ゴム状物質としてブチルゴム:商品名 IIR065(エクソンモービルケミカル社製、不飽和度:0.8モル%、ムーニー粘度ML(1+8)125℃:32)20重量部、軟化剤としてパラフィン系プロセスオイル:商品名ダイアナプロセスオイルPW-100(出光興産製)10重量部を、予め密閉式混合機[神戸製鋼(株)ミクストロンBB16]で混合し、シーティングロールに通しシート状にした後、朋来鉄工社製ペレタイザーにより角ペレットを製造した。
ペルオキシド架橋型オレフィン系共重合体ゴムとしてエチレン・プロピレン・ジエン共重合体ゴム:商品名 三井EPT(商標)4100E(三井化学社製)67重量部、ペルオキシド分解型オレフィン系プラスチックとしてホモプロピレン:商品名 プライムポリプロ(商標)F704NP(プライムポリマー製)16重量部、軟化剤としてパラフィン系プロセスオイル:商品名ダイアナプロセスオイルPW-100(出光興産製)17重量部を、予め密閉式混合機[神戸製鋼(株)ミクストロンBB16]で混合し、シーティングロールに通しシート状にした後、朋来鉄工社製ペレタイザーにより角ペレットを製造した。
ペルオキシド架橋型オレフィン系共重合体ゴムとしてエチレン・プロピレン・ジエン共重合体ゴム:商品名 三井EPT(商標)3072EPM(三井化学社製)70重量部、ペルオキシド分解型オレフィン系プラスチックとしてホモプロピレン:商品名 プライムポリプロ(商標)J105G(プライムポリマー製)20重量部、ペルオキシド非架橋型ゴム状物質としてプロピレン・α-オレフィン共重合体:商品名 Vistamaxx6102(エクソンモービル社製)10重量部、軟化剤としてパラフィン系プロセスオイル:商品名ダイアナプロセスオイルPW-100(出光興産製)20重量部を、予め密閉式混合機[神戸製鋼(株)ミクストロンBB16]で混合し、シーティングロールに通しシート状にした後、朋来鉄工社製ペレタイザーにより角ペレットを製造した。
(2-1):スチレン系熱可塑性エラストマー(St-1)
商品名 セプトン(商標)2063(クラレ製):JIS K6253に準拠するショアーA硬度:36)
(2-2):スチレン系熱可塑性エラストマー(St-2)
商品名 EARNESTON(商標)JS20N(クラレ製):(JIS K6253に準拠するショアーA硬度:1)
(2-3):スチレン系熱可塑性エラストマー(St-3)
商品名 タフテック(商標)H1221(旭化成ケミカルズ製):(JIS K6253に準拠するショアーA硬度:42)
(2-4):スチレン系熱可塑性エラストマー(St-4)
商品名 タフテック(商標)H1062(旭化成ケミカルズ製):(JIS K6253に準拠するショアーA硬度:67)
(3-1)ホモポリプロピレン(PP-1)
商品名 プライムポリプロ(商標)J105G(プライムポリマー製)
(3-2)ホモポリプロピレン(PP-2)
極限粘度[η]が8.5dl/gの高分子量成分を12質量%含有し、メルトフローレートが3.0g/10分のホモタイプのポリプロピレン
(3-3)ブロックポリプロピレン(PP-3)
メルトフローレート(ASTM-D-1238-65T;230℃、2.16kg荷重)が55g/10分であるブロックタイプのポリプロピレン(エチレン単位含量9モル%)
各材料を表1に記載した量で、それぞれ秤量し、各材料の混合物100重量部に対して、耐熱安定剤としてフェノール系酸化防止剤(イルガノックス1010、BASF(株)製)0.1重量部と、耐候安定剤としてジアゾ系耐候安定剤(チヌビン326、BASF(株))0.1重量部とをヘンシェルミキサーで充分に混合し、押出機(品番 KTX-46、神戸製鋼(株)製)にて200℃で1時間当たり60kgの処理速度で混練を行い、熱可塑性エラストマー組成物のペレットを得た。
Claims (5)
- JIS K6253に準拠するタイプA硬度(瞬間値)75以下のオレフィン系熱可塑性エラストマー(A)35~65重量部と、JIS K6253に準拠するタイプA硬度(瞬間値)60以下のスチレン系熱可塑性エラストマー(B)65~35重量部(成分(A)及び(B)の合計量は100重量部である)を含む組成物であり、JIS K6253に準拠するタイプA硬度(瞬間値)55以下の熱可塑性エラストマー組成物。
- JIS K6262に準拠する70℃24時間後の圧縮永久歪が95%以下である請求項1に記載の熱可塑性エラストマー組成物。
- 更に発泡剤(C)を添加して得られた請求項1又は2に記載の熱可塑性エラストマー組成物。
- 請求項1又は2に記載の熱可塑性エラストマー組成物を成形して得られる熱可塑性エラストマー成形体。
- 請求項3に記載の熱可塑性エラストマーを成形して得られる熱可塑性エラストマー発泡成形体。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/507,464 US20170253709A1 (en) | 2014-09-08 | 2015-09-08 | Thermoplastic elastomer composition and molded product obtained therefrom |
EP15840900.3A EP3192831A4 (en) | 2014-09-08 | 2015-09-08 | Thermoplastic elastomer composition and molded article of same |
CN201580047913.1A CN106661286B (zh) | 2014-09-08 | 2015-09-08 | 热塑性弹性体组合物及其成型体 |
KR1020187031719A KR102001799B1 (ko) | 2014-09-08 | 2015-09-08 | 열가소성 엘라스토머 조성물 및 그의 성형체 |
KR1020177005720A KR20170039261A (ko) | 2014-09-08 | 2015-09-08 | 열가소성 엘라스토머 조성물 및 그의 성형체 |
JP2016547440A JPWO2016039310A1 (ja) | 2014-09-08 | 2015-09-08 | 熱可塑性エラストマー組成物及びその成形体 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014-181885 | 2014-09-08 | ||
JP2014181885 | 2014-09-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016039310A1 true WO2016039310A1 (ja) | 2016-03-17 |
Family
ID=55459056
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2015/075397 WO2016039310A1 (ja) | 2014-09-08 | 2015-09-08 | 熱可塑性エラストマー組成物及びその成形体 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20170253709A1 (ja) |
EP (1) | EP3192831A4 (ja) |
JP (1) | JPWO2016039310A1 (ja) |
KR (2) | KR20170039261A (ja) |
CN (1) | CN106661286B (ja) |
WO (1) | WO2016039310A1 (ja) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3354686A4 (en) * | 2015-09-25 | 2018-08-01 | Bridgestone Corporation | Tire |
WO2018180371A1 (ja) | 2017-03-29 | 2018-10-04 | 三井化学株式会社 | 成形外観に優れた熱可塑性エラストマー組成物及びその成形体 |
WO2019116669A1 (ja) | 2017-12-11 | 2019-06-20 | 三井化学株式会社 | 重合体組成物及びその用途 |
JP2019527761A (ja) * | 2016-08-12 | 2019-10-03 | ダウ グローバル テクノロジーズ エルエルシー | 炭素繊維および少なくとも1つの熱可塑性ポリオレフィンエラストマーを含む組成物 |
JP2020055942A (ja) * | 2018-10-01 | 2020-04-09 | キョーラク株式会社 | 発泡ダクト |
WO2020105089A1 (ja) * | 2018-11-19 | 2020-05-28 | 株式会社アシックス | 靴底用部材、靴、及び、靴底用部材の製造方法 |
WO2021200928A1 (ja) | 2020-03-31 | 2021-10-07 | 三井化学株式会社 | 熱可塑性エラストマー組成物およびその成形体 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019005387A (ja) * | 2017-06-27 | 2019-01-17 | 美津濃株式会社 | スポーツ用シューズ |
CN112616310B (zh) * | 2019-08-06 | 2021-12-07 | 株式会社爱世克私 | 注塑成型品和鞋 |
CN115477821A (zh) * | 2022-11-15 | 2022-12-16 | 苏州海天运动器材有限公司 | 一种蹦床用护垫 |
KR102641704B1 (ko) * | 2023-04-25 | 2024-02-28 | 주식회사 대한터링협회 | 터링 게임의 재미와 편의성을 강화한 터링 패드 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09143297A (ja) * | 1995-11-22 | 1997-06-03 | Mitsui Petrochem Ind Ltd | オレフィン系熱可塑性エラストマー発泡体およびその製造方法 |
JP2002206034A (ja) * | 2001-01-10 | 2002-07-26 | Mitsui Chemicals Inc | 射出発泡成形性の良好な熱可塑性エラストマー組成物 |
JP2005075895A (ja) * | 2003-08-29 | 2005-03-24 | Riken Technos Corp | 熱可塑性エラストマー組成物及びその成形体 |
JP2006274119A (ja) * | 2005-03-30 | 2006-10-12 | Mitsui Chemicals Inc | 熱可塑性エラストマー組成物及びその積層成形品 |
JP2011102028A (ja) * | 2009-10-13 | 2011-05-26 | Kaneka Corp | 射出発泡成形用熱可塑性エラストマー組成物及び該樹脂組成物からなる射出発泡成形体 |
JP2013515102A (ja) * | 2009-12-29 | 2013-05-02 | サン−ゴバン パフォーマンス プラスティックス コーポレイション | フレキシブルチューブ材料およびその材料を製造する方法 |
JP2013245235A (ja) * | 2012-05-23 | 2013-12-09 | Mitsui Chemicals Inc | 熱可塑性エラストマー組成物及び該組成物から得られる成形体並びに発泡体 |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3806558A (en) | 1971-08-12 | 1974-04-23 | Uniroyal Inc | Dynamically partially cured thermoplastic blend of monoolefin copolymer rubber and polyolefin plastic |
JPS6011937B2 (ja) | 1978-02-24 | 1985-03-29 | 三井化学株式会社 | 熱可塑性エラストマ−発泡体の製造方法 |
JP2803311B2 (ja) * | 1990-04-09 | 1998-09-24 | 住友化学工業株式会社 | 熱可塑性エラストマー組成物 |
USH1798H (en) * | 1994-12-22 | 1999-07-06 | Shell Oil Company | Soft compounds containing elastomeric metallocene polyolefins and styrenic block copolymers |
FR2730242B1 (fr) * | 1995-02-08 | 1997-04-25 | Chaignaud Ind | Composition thermoplastique et procede de preparation |
US5939464A (en) * | 1997-05-02 | 1999-08-17 | Advanced Elastomer Systems, L.P. | High elasticity foams |
US5985962A (en) * | 1997-12-05 | 1999-11-16 | Becton, Dickinson And Company | Composition and article of improved compression set |
JP2000119447A (ja) | 1998-10-09 | 2000-04-25 | Mitsui Chemicals Inc | 熱可塑性エラストマー組成物 |
TWI297344B (en) * | 2001-01-17 | 2008-06-01 | Mitsui Chemicals Inc | Soft resin composition for injection molding and uses thereof |
US7196137B2 (en) * | 2002-02-08 | 2007-03-27 | Teknor Apex Company | Polymer compositions |
US7109135B2 (en) * | 2002-12-03 | 2006-09-19 | Central Products Company | Soft tactile coating for multi-filament woven fabric |
JP2004288296A (ja) * | 2003-03-24 | 2004-10-14 | Nok Corp | ハードディスクドライブ用カバー一体型ガスケット |
KR100726276B1 (ko) * | 2003-06-27 | 2007-06-08 | 미쓰이 가가쿠 가부시키가이샤 | 발포체용 수지 조성물 및 그 용도 |
CN1842573A (zh) * | 2004-01-09 | 2006-10-04 | Jsr株式会社 | 热塑性弹性体组合物及其模塑件 |
JP2006175825A (ja) | 2004-12-24 | 2006-07-06 | Mitsubishi Chemicals Corp | 複合成形体 |
US9260578B2 (en) * | 2005-11-30 | 2016-02-16 | Tsrc Corporation | Thermoplastic elastomer foaming material |
US20070129454A1 (en) * | 2005-12-05 | 2007-06-07 | Tsrc Corporation | Thermoplastic elastomer foaming material and the manufacturing method thereof |
JP2008162183A (ja) | 2006-12-28 | 2008-07-17 | Asahi Kasei Chemicals Corp | オレフィン系積層体 |
JP5550215B2 (ja) | 2008-07-18 | 2014-07-16 | 三井化学株式会社 | 発泡用熱可塑性エラストマー組成物、その発泡成形体、その複合成形体および自動車用インストゥルメントパネル |
JP2010274627A (ja) * | 2009-06-01 | 2010-12-09 | Canon Inc | インクジェットプリンター用インク接液熱可塑性エラストマー組成物 |
JP2011184503A (ja) * | 2010-03-05 | 2011-09-22 | Sumitomo Chemical Co Ltd | 熱可塑性エラストマー組成物 |
-
2015
- 2015-09-08 WO PCT/JP2015/075397 patent/WO2016039310A1/ja active Application Filing
- 2015-09-08 KR KR1020177005720A patent/KR20170039261A/ko active IP Right Grant
- 2015-09-08 CN CN201580047913.1A patent/CN106661286B/zh not_active Expired - Fee Related
- 2015-09-08 KR KR1020187031719A patent/KR102001799B1/ko active IP Right Grant
- 2015-09-08 US US15/507,464 patent/US20170253709A1/en not_active Abandoned
- 2015-09-08 EP EP15840900.3A patent/EP3192831A4/en not_active Withdrawn
- 2015-09-08 JP JP2016547440A patent/JPWO2016039310A1/ja not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09143297A (ja) * | 1995-11-22 | 1997-06-03 | Mitsui Petrochem Ind Ltd | オレフィン系熱可塑性エラストマー発泡体およびその製造方法 |
JP2002206034A (ja) * | 2001-01-10 | 2002-07-26 | Mitsui Chemicals Inc | 射出発泡成形性の良好な熱可塑性エラストマー組成物 |
JP2005075895A (ja) * | 2003-08-29 | 2005-03-24 | Riken Technos Corp | 熱可塑性エラストマー組成物及びその成形体 |
JP2006274119A (ja) * | 2005-03-30 | 2006-10-12 | Mitsui Chemicals Inc | 熱可塑性エラストマー組成物及びその積層成形品 |
JP2011102028A (ja) * | 2009-10-13 | 2011-05-26 | Kaneka Corp | 射出発泡成形用熱可塑性エラストマー組成物及び該樹脂組成物からなる射出発泡成形体 |
JP2013515102A (ja) * | 2009-12-29 | 2013-05-02 | サン−ゴバン パフォーマンス プラスティックス コーポレイション | フレキシブルチューブ材料およびその材料を製造する方法 |
JP2013245235A (ja) * | 2012-05-23 | 2013-12-09 | Mitsui Chemicals Inc | 熱可塑性エラストマー組成物及び該組成物から得られる成形体並びに発泡体 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3192831A4 * |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10946698B2 (en) | 2015-09-25 | 2021-03-16 | Bridgestone Corporation | Tire |
EP3354686A4 (en) * | 2015-09-25 | 2018-08-01 | Bridgestone Corporation | Tire |
JP7218285B2 (ja) | 2016-08-12 | 2023-02-06 | ダウ グローバル テクノロジーズ エルエルシー | 炭素繊維および少なくとも1つの熱可塑性ポリオレフィンエラストマーを含む組成物 |
JP2019527761A (ja) * | 2016-08-12 | 2019-10-03 | ダウ グローバル テクノロジーズ エルエルシー | 炭素繊維および少なくとも1つの熱可塑性ポリオレフィンエラストマーを含む組成物 |
WO2018180371A1 (ja) | 2017-03-29 | 2018-10-04 | 三井化学株式会社 | 成形外観に優れた熱可塑性エラストマー組成物及びその成形体 |
KR20190112133A (ko) | 2017-03-29 | 2019-10-02 | 미쓰이 가가쿠 가부시키가이샤 | 성형 외관이 우수한 열가소성 엘라스토머 조성물 및 그의 성형체 |
CN110461933A (zh) * | 2017-03-29 | 2019-11-15 | 三井化学株式会社 | 成型外观优异的热塑性弹性体组合物及其成型体 |
US11407885B2 (en) | 2017-03-29 | 2022-08-09 | Mitsui Chemicals, Inc. | Thermoplastic elastomer composition having excellent molding appearance and a molded product obtained therefrom |
CN110461933B (zh) * | 2017-03-29 | 2022-03-11 | 三井化学株式会社 | 成型外观优异的热塑性弹性体组合物及其成型体 |
KR20200070397A (ko) | 2017-12-11 | 2020-06-17 | 미쓰이 가가쿠 가부시키가이샤 | 중합체 조성물 및 그의 용도 |
WO2019116669A1 (ja) | 2017-12-11 | 2019-06-20 | 三井化学株式会社 | 重合体組成物及びその用途 |
JP2020055942A (ja) * | 2018-10-01 | 2020-04-09 | キョーラク株式会社 | 発泡ダクト |
JP7277866B2 (ja) | 2018-10-01 | 2023-05-19 | キョーラク株式会社 | 発泡ダクト |
JPWO2020105089A1 (ja) * | 2018-11-19 | 2021-09-02 | 株式会社アシックス | 靴底用部材、靴、及び、靴底用部材の製造方法 |
AU2018450366B2 (en) * | 2018-11-19 | 2021-09-23 | Asics Corporation | Shoe sole member, shoe, and method for producing shoe sole member |
WO2020105089A1 (ja) * | 2018-11-19 | 2020-05-28 | 株式会社アシックス | 靴底用部材、靴、及び、靴底用部材の製造方法 |
US11517075B2 (en) | 2018-11-19 | 2022-12-06 | Asics Corporation | Shoe sole member, shoe, and method for manufacturing shoe sole member |
WO2021200928A1 (ja) | 2020-03-31 | 2021-10-07 | 三井化学株式会社 | 熱可塑性エラストマー組成物およびその成形体 |
KR20220105659A (ko) | 2020-03-31 | 2022-07-27 | 미쓰이 가가쿠 가부시키가이샤 | 열가소성 엘라스토머 조성물 및 그 성형체 |
Also Published As
Publication number | Publication date |
---|---|
US20170253709A1 (en) | 2017-09-07 |
EP3192831A4 (en) | 2018-05-16 |
JPWO2016039310A1 (ja) | 2017-06-22 |
KR20170039261A (ko) | 2017-04-10 |
KR20180122045A (ko) | 2018-11-09 |
CN106661286A (zh) | 2017-05-10 |
CN106661286B (zh) | 2019-12-06 |
KR102001799B1 (ko) | 2019-07-18 |
EP3192831A1 (en) | 2017-07-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN106661286B (zh) | 热塑性弹性体组合物及其成型体 | |
AU700598B2 (en) | Olefin thermoplastic elastomer foamed products and processes for preparing the same | |
AU705660B2 (en) | Foamable olefin thermoplastic elastomer compositions and foamed products thereof | |
JP4728735B2 (ja) | オレフィン系熱可塑性エラストマー組成物及びその発泡体 | |
JP5972200B2 (ja) | 熱可塑性エラストマー組成物、それを用いた成形体、および用途 | |
JP3711183B2 (ja) | 発泡性オレフィン系熱可塑性エラストマー組成物およびその発泡体 | |
EP1510542A1 (en) | Olefin-base thermoplastic elastomer foam and olefin-base thermoplastic elastomer composition for the form | |
JP3714874B2 (ja) | 射出発泡成形性の良好な熱可塑性エラストマー組成物 | |
JP5221000B2 (ja) | オレフィン系熱可塑性エラストマー発泡体および発泡積層体 | |
JP5188301B2 (ja) | 発泡用熱可塑性エラストマー組成物、その発泡成形体、その複合成形体および自動車用インストゥルメントパネル | |
JPS6259139B2 (ja) | ||
JP2003191378A (ja) | オレフィン系発泡積層体および用途 | |
JP7034176B2 (ja) | 重合体組成物及びその用途 | |
JP6153788B2 (ja) | 発泡熱可塑性エラストマー組成物、及び複合成形体 | |
JP5361761B2 (ja) | オレフィン系熱可塑性エラストマー組成物及びその用途 | |
JPS6011938B2 (ja) | 熱可塑性樹脂発泡体の製造方法 | |
JP2010241934A (ja) | 熱可塑性エラストマー組成物 | |
JP2013245235A (ja) | 熱可塑性エラストマー組成物及び該組成物から得られる成形体並びに発泡体 | |
JPH02255738A (ja) | 部分架橋熱可塑性エラストマー発泡体およびその製造方法 | |
JP3784226B2 (ja) | 発泡性オレフィン系熱可塑性エラストマー組成物及びその発泡体 | |
JP2013067819A (ja) | 熱可塑性エラストマー組成物 | |
JP2019001888A (ja) | 柔らかい触感の熱可塑性エラストマー組成物及びその成形体 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15840900 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2016547440 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 20177005720 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15507464 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
REEP | Request for entry into the european phase |
Ref document number: 2015840900 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2015840900 Country of ref document: EP |