Patents by Inventor Nobuhiro Natsuyama
Nobuhiro Natsuyama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Method for producing thermoplastic elastomer composition, and method for producing composite article
Patent number: 9708433Abstract: A method for producing a thermoplastic elastomer composition includes: (1) a step of dynamically vulcanizing 50 to 90% by weight of (A) an oil-extended ethylene-?-olefin-based copolymerized rubber and 10 to 50% by weight of (B) a propylene-based resin, where the total amount of the oil-extended ethylene-?-olefin-based copolymerized rubber (A) and the propylene-based resin (B) is taken as 100% by weight, in the presence of a crosslinking agent, thereby obtaining a thermoplastic elastomer, wherein the oil-extended ethylene-?-olefin-based copolymerized rubber (A) contains 100 parts by weight of an ethylene-?-olefin-based copolymer rubber having a Mooney viscosity (ML1+4100° C.) of 150 to 350 at 100° C.Type: GrantFiled: February 12, 2013Date of Patent: July 18, 2017Assignee: Sumitomo Chemical Company, LimitedInventor: Nobuhiro Natsuyama -
Patent number: 9518175Abstract: A flame-retardant thermoplastic elastomer composition is provided to produce a molded article possessing mechanical properties, flame retardancy and softness inherently possessed by a molted article obtained from a thermoplastic elastomer composition containing a mineral oil-based softening agent and a flame retardant and fails to stain a mold after injection molding. A production method includes step (1) obtaining a thermoplastic elastomer composition by dynamically crosslinking a polymer mixture (A) containing an ethylene-?-olefin-based copolymer rubber (A1) and a propylene-based polymer (A2) in the presence of a mineral oil-based softening agent (C) and a crosslinking agent (D), and step (2) kneading the thermoplastic elastomer composition, a halogen-free flame retardant (E), zinc oxide (F), and a thermoplastic resin with a polar group (G).Type: GrantFiled: December 20, 2014Date of Patent: December 13, 2016Assignee: Sumitomo Chemical Company, LimitedInventors: Ryosuke Kurokawa, Nobuhiro Natsuyama
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Patent number: 9399709Abstract: Disclosed is a method for producing a thermoplastic elastomer composition, the method comprising subjecting components (A), (B), (C), and (D) to dynamic thermal treatment in a melt-kneading apparatus, wherein the component (A) is an ethylene-?-olefin based copolymer rubber, the component (B) is a polyolefin resin, the component (C) is a liquid in which an alkylphenol resin has been dispersed and/or dissolved in a mineral oil, and the component (D) is a metal halide.Type: GrantFiled: August 16, 2012Date of Patent: July 26, 2016Assignee: Sumitomo Chemical Company, LimitedInventors: Shuhei Ono, Nobuhiro Natsuyama
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Patent number: 9102809Abstract: A method is provided for producing a flame retardant thermoplastic elastomer composition, wherein the method includes (1) a step of preparing a thermoplastic elastomer composition by dynamically vulcanizing a thermoplastic elastomer composition precursor containing (A) an ethylene-?-olefin-based copolymer rubber, (B) a propylene-based polymer and (C) a mineral oil-based softening agent in the presence of (D) a crosslinking agent, and (2) a step of kneading the thermoplastic elastomer composition, (E) a halogen-free flame retardant, (F) a zinc oxide, and optionally (G) a polyhydric compound.Type: GrantFiled: July 30, 2013Date of Patent: August 11, 2015Assignee: Sumitomo Chemical Company, LimitedInventors: Ryosuke Kurokawa, Nobuhiro Natsuyama
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Publication number: 20150183972Abstract: A flame-retardant thermoplastic elastomer composition is provided to produce a molded article possessing mechanical properties, flame retardancy and softness inherently possessed by a molted article obtained from a thermoplastic elastomer composition containing a mineral oil-based softening agent and a flame retardant and fails to stain a mold after injection molding. A production method includes step (1) obtaining a thermoplastic elastomer composition by dynamically crosslinking a polymer mixture (A) containing an ethylene-?-olefin-based copolymer rubber (A1) and a propylene-based polymer (A2) in the presence of a mineral oil-based softening agent (C) and a crosslinking agent (D), and step (2) kneading the thermoplastic elastomer composition, a halogen-free flame retardant (E), zinc oxide (F), and a thermoplastic resin with a polar group (G).Type: ApplicationFiled: December 20, 2014Publication date: July 2, 2015Inventors: Ryosuke KUROKAWA, Nobuhiro NATSUYAMA
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Patent number: 8703870Abstract: Disclosed is a thermoplastic elastomer composition that will provide little load on the environment and has superior mechanical characteristics, the composition being obtained by melt-kneading 10 to 90 parts of ethylene-?-olefin based copolymer rubber (A), 1 to 50 parts of non-petroleum source-derived thermoplastic resin (B), 0.01 to 20 parts of modified ethylene-based copolymer (C), 1 to 50 parts of propylene-based polymer (D), 0.001 to 5 parts of crosslinking agent (E), and 0 to 50 parts of a mineral oil-based softening agent (F), wherein the amounts of components (A), (B), (D) and (F) are amounts in weight calculated where the total amount of components (A), (B), (D) and (F) is considered to be 100 parts, and the amounts of components (C) and (E) are amounts in weight calculated where the total amount of components (A), (B), (D) and (F) is considered to be 100 parts.Type: GrantFiled: August 29, 2012Date of Patent: April 22, 2014Assignee: Sumitomo Chemical Company, LimitedInventors: Ryosuke Kurokawa, Nobuhiro Natsuyama
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Publication number: 20140039108Abstract: A method is provided for producing a flame retardant thermoplastic elastomer composition, wherein the method includes (1) a step of preparing a thermoplastic elastomer composition by dynamically vulcanizing a thermoplastic elastomer composition precursor containing (A) an ethylene-?-olefin-based copolymer rubber, (B) a propylene-based polymer and (C) a mineral oil-based softening agent in the presence of (D) a crosslinking agent, and (2) a step of kneading the thermoplastic elastomer composition, (E) a halogen-free flame retardant, (F) a zinc oxide, and optionally (G) a polyhydric compound.Type: ApplicationFiled: July 30, 2013Publication date: February 6, 2014Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Ryosuke KUROKAWA, Nobuhiro NATSUYAMA
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Patent number: 8598265Abstract: Disclosed is a thermoplastic elastomer composition that will provide little load on the environment and has superior mechanical characteristics, the composition being obtained by melt-kneading 10 to 90 parts of ethylene-?-olefin based copolymer rubber (A), 1 to 50 parts of non-petroleum source-derived thermoplastic resin (B), 1 to 50 parts of modified propylene-based copolymer (C), 1 to 50 parts of propylene-based polymer (D), 0.001 to 5 parts of crosslinking agent (E), and 0 to 50 parts of mineral oil-based softening agent (F), wherein the amounts of components (A), (B), (C), (D), and (F) are amounts in weight calculated where the combined amount of components (A), (B), (C), (D) and (F) is considered to be 100 parts by weight, and the amount of component (E) is an amount in weight calculated where the combined amount of components (A), (B), (C), (D), and (F) is considered to be 100 parts by weight.Type: GrantFiled: August 29, 2012Date of Patent: December 3, 2013Assignee: Sumitomo Chemical Company, LimitedInventors: Ryosuke Kurokawa, Nobuhiro Natsuyama
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Patent number: 8399104Abstract: The present invention provides a composite molded article and a method for producing the same. The composite molded article comprises a molded article of an olefin thermoplastic elastomer (A) and a molded article of an olefin thermoplastic elastomer (B) fused to each other, wherein the olefin thermoplastic elastomer molded article (A) contains an olefin thermoplastic elastomer composition (A?) having less than 5% by weight of a cyclohexane-soluble(s) and less than 35% of a compression set (JIS K6262, 70° C., 22 hours), and the olefin thermoplastic elastomer molded article (B) contains an olefin thermoplastic elastomer composition (B?) obtained by blending 100 parts by weight of an ethylene/?-olefin/non-conjugated diene copolymer rubber (b-1) containing 6 to 15 wt % of a non-conjugated diene unit, with 40 to 150 parts by weight of a mineral oil softener (b-2), 5 to 150 parts by weight of an olefin resin (b-3), and 0.Type: GrantFiled: March 21, 2008Date of Patent: March 19, 2013Assignee: Sumitomo Chemical Company, LimitedInventors: Nobuhiro Natsuyama, Hironobu Shigematsu
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Publication number: 20130059978Abstract: Disclosed is a thermoplastic elastomer composition that will provide little load on the environment and has superior mechanical characteristics, the composition being obtained by melt-kneading 10 to 90 parts of ethylene-?-olefin based copolymer rubber (A), 1 to 50 parts of non-petroleum source-derived thermoplastic resin (B), 1 to 50 parts of modified propylene-based copolymer (C), 1 to 50 parts of propylene-based polymer (D), 0.001 to 5 parts of crosslinking agent (E), and 0 to 50 parts of mineral oil-based softening agent (F), wherein the amounts of components (A), (B), (C), (D), and (F) are amounts in weight calculated where the combined amount of components (A), (B), (C), (D) and (F) is considered to be 100 parts by weight, and the amount of component (E) is an amount in weight calculated where the combined amount of components (A), (B), (C), (D), and (F) is considered to be 100 parts by weight.Type: ApplicationFiled: August 29, 2012Publication date: March 7, 2013Applicant: Sumitomo Chemical Company, LimitedInventors: Ryosuke KUROKAWA, Nobuhiro NATSUYAMA
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Publication number: 20130059977Abstract: Disclosed is a thermoplastic elastomer composition that will provide little load on the environment and has superior mechanical characteristics, the composition being obtained by melt-kneading 10 to 90 parts of ethylene-?-olefin based copolymer rubber (A), 1 to 50 parts of non-petroleum source-derived thermoplastic resin (B), 0.01 to 20 parts of modified ethylene-based copolymer (C), 1 to 50 parts of propylene-based polymer (D), 0.001 to 5 parts of crosslinking agent (E), and 0 to 50 parts of a mineral oil-based softening agent (F), wherein the amounts of components (A), (B), (D) and (F) are amounts in weight calculated where the total amount of components (A), (B), (D) and (F) is considered to be 100 parts, and the amounts of components (C) and (E) are amounts in weight calculated where the total amount of components (A), (B), (D) and (F) is considered to be 100 parts.Type: ApplicationFiled: August 29, 2012Publication date: March 7, 2013Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Ryosuke KUROKAWA, Nobuhiro NATSUYAMA
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Publication number: 20130046049Abstract: Disclosed is a method for producing a thermoplastic elastomer composition, the method comprising subjecting components (A), (B), (C), and (D) to dynamic thermal treatment in a melt-kneading apparatus, wherein the component (A) is an ethylene-?-olefin based copolymer rubber, the component (B) is a polyolefin resin, the component (C) is a liquid in which an alkylphenol resin has been dispersed and/or dissolved in a mineral oil, and the component (D) is a metal halide.Type: ApplicationFiled: August 16, 2012Publication date: February 21, 2013Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Shuhei ONO, Nobuhiro NATSUYAMA
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Publication number: 20130041090Abstract: There is disclosed a method for producing a thermoplastic elastomer composition, the method involving subjecting an ethylene-?-olefin-based copolymer rubber (A) and a polyolefin-based resin (B) in the presence of an alkylphenol resin (C) and a metal halide (D) to dynamic thermal treatment within a melt-kneading apparatus, wherein the metal halide (D) is a powder, and a mixture of a powder of the metal halide (D) and a particle having a volume-average particle diameter of 0.1 ?m to 3 mm is continuously fed to the melt-kneading apparatus.Type: ApplicationFiled: June 7, 2012Publication date: February 14, 2013Applicant: Sumitomo Chemical Company, LimitedInventors: Shuhei ONO, Nobuhiro NATSUYAMA
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Patent number: 7989542Abstract: A process for producing a thermoplastic elastomer composition comprising the steps of (1) heating dynamically (A) a defined ethylene-?-olefin random copolymer rubber, (B) a propylene homopolymer, or a defined copolymer of propylene with ethylene and/or an ?-olefin, (C) a mineral oil softener, and (D) a crosslinking agent, and (2) melt-kneading the resultant product with a defined polypropylene resin (E); and a process for producing a foamed thermoplastic elastomer composition comprising the further step of melt-kneading said thermoplastic elastomer composition with (F) a foaming agent.Type: GrantFiled: December 5, 2005Date of Patent: August 2, 2011Assignee: Sumitomo Chemical Company, LimitedInventors: Nobuhiro Natsuyama, Hironobu Shigematsu
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Patent number: 7718272Abstract: A laminated product comprising (i) a layer containing a sulfur-vulcanized rubber composition, and (ii) a layer containing a thermoplastic elastomer composition produced by dynamically heating (A) an ethylene-?-olefin copolymer rubber, (B) a propylene resin, (C) a mineral oil, (D) a cross-linking agent, and (E) an ethylene resin; and a process for producing a laminated product comprising the steps of (1) dynamically heating the above components (A) to (E), and (2) laminating the above layers (i) and (ii).Type: GrantFiled: July 12, 2005Date of Patent: May 18, 2010Assignee: Sumitomo Chemical Company LimitedInventors: Nobuhiro Natsuyama, Hironobu Shigematsu
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Publication number: 20100112366Abstract: The present invention provides a composite molded article and a method for producing the same. The composite molded article comprises a molded article of an olefin thermoplastic elastomer (A) and a molded article of an olefin thermoplastic elastomer (B) fused to each other, wherein the olefin thermoplastic elastomer molded article (A) contains an olefin thermoplastic elastomer composition (A?) having less than 5% by weight of a cyclohexane-soluble(s) and less than 35% of a compression set (JIS K6262, 70° C., 22 hours), and the olefin thermoplastic elastomer molded article (B) contains an olefin thermoplastic elastomer composition (B?) obtained by blending 100 parts by weight of an ethylene/?-olefin/non-conjugated diene copolymer rubber (b-1) containing 6 to 15 wt % of a non-conjugated diene unit, with 40 to 150 parts by weight of a mineral oil softener (b-2), 5 to 150 parts by weight of an olefin resin (b-3), and 0.Type: ApplicationFiled: March 21, 2008Publication date: May 6, 2010Applicant: Sumitomo Chemical Company LimitedInventors: Nobuhiro Natsuyama, Hironobu Shigematsu
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Publication number: 20090137741Abstract: The present invention provides a thermoplastic elastomer composition, a composite molded body and a weather strip. The thermoplastic elastomer composition comprises the following (i) and (ii): (i) a thermoplastic elastomer obtained by dynamically crosslinking (a), (b), (c) and (d) in the presence of a crosslinking agent,(a) 10 to 75% by weight of the ethylene-a-olefin copolymer rubber; (b) 10 to 50% by weight of a propylene resin; (c) 5 to 60% by weight of mineral oil; and (d) an ethylene resin; a total content of (a), (b) and (c) being 100% by weight, and a content of (d) being from 0 to 10 parts by weight, provided that the total content of (a), (b) and (C) is 100 parts by weight; (ii) a high density polyethylene; and a content of (ii) is from 55 to 150 parts by weight based on 100 parts by weight of (a) the ethylene-?-olefin copolymer rubber.Type: ApplicationFiled: November 19, 2008Publication date: May 28, 2009Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventor: Nobuhiro NATSUYAMA
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Publication number: 20080021145Abstract: It is an object of the present invention to provide an olefin thermoplastic elastomer composition which, through dynamic crosslinking of an olefin resin and an ethylene-?-olefin copolymer rubber as polymer components, has excellent appearance of the extrusion molding while also having excellent physical properties such as compression set and tensile strength. The present invention is directed to a method for producing a thermoplastic elastomer composition having the steps of: dynamically heat treating the following components (A) to (D); adding a component (E) to a resulting composition; and kneading the resulting mixture, and a thermoplastic elastomer composition obtained by the production method, (A): 40 to 95 parts by weight of an ethylene-?-olefin-based copolymer rubber; (B): 5 to 60 parts by weight of a polyolefin-based resin; (C): 0.1 to 20 parts by weight of a halogenated alkylphenolic resin-based crosslinking agent; (D): 0.001 to 0.7 part by weight of iron oxide; and (E): 0.Type: ApplicationFiled: July 2, 2007Publication date: January 24, 2008Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Kohichi Iketani, Hironobu Shigematsu, Nobuhiro Natsuyama
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Publication number: 20080009588Abstract: It is an object of the present invention to provide a method for producing an olefin thermoplastic elastomer composition which, through dynamic crosslinking of an olefin resin and an ethylene-?-olefin copolymer rubber as polymer components, has excellent appearance of the extrusion molding while also having excellent physical properties such as compression set, oil resistance and tensile strength. The present invention is directed to a method for producing a thermoplastic elastomer composition having the steps of: dynamically heat treating the following components (A) to (D); adding a component (E) to a resulting composition; and kneading a resulting mixture, (A): an ethylene-?-olefin-based copolymer rubber; (B): a polyolefin resin; (C): a halogenated alkylphenolic resin-based crosslinking agent; (D): zinc oxide; and (E): a halogen capturing agent.Type: ApplicationFiled: July 2, 2007Publication date: January 10, 2008Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Kohichi Iketani, Hironobu Shigematsu, Nobuhiro Natsuyama
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Publication number: 20060211812Abstract: A process for producing a thermoplastic elastomer composition comprising the steps of (1) heating dynamically (A) a defined ethylene-?-olefin random copolymer rubber, (B) a propylene homopolymer, or a defined copolymer of propylene with ethylene and/or an ?-olefin, (C) a mineral oil softener, and (D) a crosslinking agent, and (2) melt-kneading the resultant product with a defined polypropylene resin (E); and a process for producing a foamed thermoplastic elastomer composition comprising the further step of melt-kneading said thermoplastic elastomer composition with (F) a foaming agent.Type: ApplicationFiled: December 5, 2005Publication date: September 21, 2006Inventors: Nobuhiro Natsuyama, Hironobu Shigematsu