Patents by Inventor Yoshifumi Araki
Yoshifumi Araki 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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Publication number: 20170002190Abstract: A block copolymer composition including: 10% by mass or more and 90% by mass or less of a component (a), and 10% by mass or more and 90% by mass or less of a component (b), wherein the component (a) is a block copolymer containing a polymer block (A) primarily including a vinyl aromatic monomer unit and a polymer block (B) primarily including a conjugated diene monomer unit, wherein the block copolymer has a weight average molecular weight of 30,000 or higher and 150,000 or lower; and the component (b) is a block copolymer containing a polymer block (A) primarily including a vinyl aromatic monomer unit and a polymer block (B) primarily including a conjugated diene monomer unit.Type: ApplicationFiled: January 22, 2015Publication date: January 5, 2017Applicants: Asahi Kasei Kabushiki Kaisha, Japan Elastomer Co., Ltd.Inventors: Takahiro Hisasue, Shigeo Nakajima, Yoshifumi Araki, Yukinori Nakamichi
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Patent number: 9522393Abstract: A catalyst composition for hydrogenation including (A) to (D), in which a mass ratio (D)/(A) is 0.01 to 2.00. (A): a titanocene compound represented by following formula (1), (wherein R5 and R6 are selected from the group consisting of hydrogen, a hydrocarbon group having 1 to 12 carbon atoms, an aryloxy group, an alkoxy group, a halogen group, and a carbonyl group, and R1 and R2 are selected from hydrogen and a hydrocarbon group having 1 to 12 carbon atoms) (B): a compound containing an element selected from Li, Na, K, Mg, Zn, Al, and Ca, (C): an unsaturated polymer having a fraction of an olefinic unsaturated double bond content of side chains based on a total olefinic unsaturated double bond content of 0.25 to 1.0, and (D): a polar compound.Type: GrantFiled: September 12, 2013Date of Patent: December 20, 2016Assignee: Asahi Kasei Chemicals CorporationInventors: Yoshifumi Araki, Eiji Sasaya, Katsunori Nitta
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Publication number: 20160333132Abstract: The polymer according to the present invention is a polymer containing a conjugated diene monomer unit and a vinyl aromatic monomer unit, wherein the polymer has a polymer block (A) containing the vinyl aromatic monomer unit as a main component and a polymer block (B) containing the conjugated diene monomer unit and the vinyl aromatic monomer unit, a content of the polymer block (A) is 10% by mass or more and 40% by mass or less, a bulk density of the polymer is 0.05 g/mL or more and 0.45 g/mL or less, and a specific surface area of the polymer is 0.10 m2/g or more and 0.60 m2/g or less.Type: ApplicationFiled: January 16, 2015Publication date: November 17, 2016Applicant: Asahi Kasei Kabushiki KaishaInventors: Takayuki Shiromoto, Shigeo Nakajima, Yoshifumi Araki, Nobuaki Kubo, Takuya Suzuki
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Publication number: 20160333235Abstract: Disclosure provides a block copolymer composition having 20% by mass or more and 90% by mass or less of a component (A) and 10% by mass or more and 80% by mass or less of a component (B), wherein the component (A) is a block copolymer having a polymer block mainly comprising a vinyl aromatic monomer unit and a polymer block mainly comprising a conjugated diene monomer unit, and having a weight-average molecular weight of 30,000 or higher and 190,000 or lower; and the component (B) is a block copolymer having a polymer block mainly comprising a vinyl aromatic monomer unit and a polymer block mainly comprising a conjugated diene monomer unit, and having a weight-average molecular weight of 60,000 or higher and 500,000 or lower.Type: ApplicationFiled: January 22, 2015Publication date: November 17, 2016Applicants: Asahi Kasei Kabushiki Kaisha, Japan Elastomer Co., Ltd.Inventors: Kosuke Nakatani, Yoshifumi Araki, Kenta Shibuya, Takahiro Hisasue, Kazuo Moritou
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Patent number: 9493623Abstract: The present invention provides a crosslinked foam having an excellent balance of various physical properties in terms of lightness, flexibility, permanent compression set, tear strength, impact resilience, and molding stability; a shoe midsole; and a crosslinkable and foamable composition that provides the crosslinked foam and shoe midsole. A crosslinkable and foamable composition comprising (A) an ethylene-based copolymer; (B) a copolymer comprising a vinyl aromatic monomer unit and an unsaturated bond-containing a conjugated diene monomer unit; (C) an organic peroxide; and (D) a foaming agent; a mass ratio of the component (A) to the component (B), (A/B), being from 97/3 to 50/50; and the component (B) comprising 5 mass % or more and 80 mass % or less of the vinyl aromatic monomer unit, and 5 mass % or more and 55 mass % or less of the conjugated diene monomer unit.Type: GrantFiled: December 21, 2009Date of Patent: November 15, 2016Assignee: ASAHI KASEI CHEMICALS CORPORATIONInventors: Daisuke Shimizu, Yoshifumi Araki, Katsumi Suzuki, Yasuhiro Kusanose, Mika Horiuchi
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Patent number: 9365706Abstract: A crosslinked composition is obtained by crosslinking a composition, containing: 1 to 99 parts by mass of a vinyl aromatic copolymer rubber (I) comprising 5 to 70% by mass of a vinyl aromatic monomer unit and 0.1 to 30% by mass of a conjugated diene monomer unit and having one or more tan ? peak temperatures between 75° C. and 125° C.; 99 to 1 parts by mass of an ethylenic copolymer rubber (II); 10 to 100 parts by mass of an olefinic resin (III) based on 100 parts by mass of a total amount of the vinyl aromatic copolymer rubber (I) and the ethylenic copolymer rubber (II); and 0.01 to 50 parts by mass of a crosslinking agent (IV) based on 100 parts by mass of the total amount of the vinyl aromatic copolymer rubber (I) and the ethylenic copolymer rubber (II).Type: GrantFiled: September 14, 2012Date of Patent: June 14, 2016Assignee: Asahi Kasei Chemicals CorporationInventors: Daisuke Shimizu, Yoshifumi Araki, Katsumi Suzuki
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Publication number: 20150353669Abstract: A method for producing a polymer has: a polymerization step of polymerizing at least a conjugated diene monomer in a hydrocarbon solvent using an organolithium compound as a polymerization initiator, and obtaining a polymer; and, following steps (1) to (4), successively performing after the polymerization step: (1) a step of mixing an acid and water of 20 to 300 parts by mass into the solution containing the polymer of 100 parts by mass, (2) a step of adjusting an amount of the water to 10 parts by mass or less based on 100 parts by mass of the solution containing the polymer, (3) a step of adding a carbon oxide gas and/or a compound to be decarboxylated to the solution containing the polymer, and (4) a step of removing a solvent from the solution containing the polymer until a concentration of the polymer reaches 95 mass % or more.Type: ApplicationFiled: January 8, 2014Publication date: December 10, 2015Applicant: Asahi Kasei Chemicals CorporationInventors: Yoshifumi Araki, Eiji Sasaya, Takuya Suzuki
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Publication number: 20150298112Abstract: A method for producing a catalyst composition for hydrogenation, wherein: (A): a titanocene compound represented by following general formula (1): wherein R5 and R6 represent a group selected from the group consisting of hydrogen, a hydrocarbon group having 1 to 12 carbon atoms, an aryloxy group, an alkoxy group, a halogen group and a carbonyl group, and may be the same or different, and R1 and R2 represent a group selected from the group consisting of hydrogen and a hydrocarbon group having 1 to 12 carbon atoms, and may be the same or different, provided that R1 and R2 represent are not all hydrogens or all hydrocarbon groups having 1 to 12 carbon atoms; (B): a compound containing at least one element selected from the group consisting of elements Li, Na, K, Mg, Zn, Al, and Ca; and (C): an unsaturated compound are used, and the method has: a force application step of applying a shearing force at a shearing rate of 1000 (1/s) or more to at least component (A); and a step of mixing components (AType: ApplicationFiled: October 22, 2013Publication date: October 22, 2015Applicant: Asahi Kasei Chemicals CorporationInventors: Yoshifumi ARAKI, Eiji SASAYA, Katsunori NITTA
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Publication number: 20150273458Abstract: A catalyst composition for hydrogenation including (A) to (D), in which a mass ratio (D)/(A) is 0.01 to 2.00. (A): a titanocene compound represented by following formula (1), (wherein R5 and R6 are selected from the group consisting of hydrogen, a hydrocarbon group having 1 to 12 carbon atoms, an aryloxy group, an alkoxy group, a halogen group, and a carbonyl group, and R1 and R2 are selected from hydrogen and a hydrocarbon group having 1 to 12 carbon atoms) (B): a compound containing an element selected from Li, Na, K, Mg, Zn, Al, and Ca, (C): an unsaturated polymer having a fraction of an olefinic unsaturated double bond content of side chains based on a total olefinic unsaturated double bond content of 0.25 to 1.0, and (D): a polar compound.Type: ApplicationFiled: September 12, 2013Publication date: October 1, 2015Applicant: Asahi Kasei Chemicals CorporationInventors: Yoshifumi Araki, Eiji Sasaya, Katsunori Nitta
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Publication number: 20150273459Abstract: A catalyst composition for hydrogenation including (A) to (D), in which a mass ratio ((C)/(A)) is 0.1 to 4.0 and a mass ratio ((D)/(A)) is 0.01 to 1.00, (A): a titanocene compound represented by formula (1), (wherein R5 and R6 are any group selected from hydrogen, a hydrocarbon group having 1 to 12 carbon atoms, an aryloxy group, an alkoxy group, a halogen group, and a carbonyl group. R1 and R2 are any group selected from the group consisting of hydrogen and a hydrocarbon group having 1 to 12 carbon atoms, and R1 and R2 are not all hydrogen atoms or all a hydrocarbon group having 1 to 12 carbon atoms), (B): a reductant formed from a compound containing an element selected from the elements Li, Na, K, Mg, Zn, Al, and Ca, (C): an unsaturated compound having a molecular weight of 400 or less, and (D): a polar compound.Type: ApplicationFiled: September 12, 2013Publication date: October 1, 2015Applicant: Asahi Kasei Chemicals CorporationInventors: Yoshifumi Araki, Eiji Sasaya, Katsunori Nitta
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Patent number: 9139722Abstract: There are provided a polypropylene-based resin composition having excellent impact resistance, tensile elongation at break and rigidity, a molded article thereof, and an automobile interior or exterior material using the same. The polypropylene-based resin composition contains 50 to 90% by mass of a polypropylene-based polymer (A), 5 to 50% by mass of an ethylene-?-olefin copolymer rubber (B), and 0.1 to 5% by mass of a copolymer (C) primarily comprising a vinyl aromatic monomer unit and an alkylene monomer unit, wherein a content of an ?-olefin monomer unit in all alkylene monomers is 45 mol % or more.Type: GrantFiled: March 12, 2010Date of Patent: September 22, 2015Assignee: ASAHI KASEI CHEMICALS CORPORATIONInventors: Yoshifumi Araki, Katsunori Nitta, Takashi Sato
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Publication number: 20140357798Abstract: A crosslinked composition is obtained by crosslinking a composition, containing: 1 to 99 parts by mass of a vinyl aromatic copolymer rubber (I) comprising 5 to 70% by mass of a vinyl aromatic monomer unit and 0.1 to 30% by mass of a conjugated diene monomer unit and having one or more tan ? peak temperatures between 75° C. and 125° C.; 99 to 1 parts by mass of an ethylenic copolymer rubber (II); 10 to 100 parts by mass of an olefinic resin (III) based on 100 parts by mass of a total amount of the vinyl aromatic copolymer rubber (I) and the ethylenic copolymer rubber (II); and 0.01 to 50 parts by mass of a crosslinking agent (IV) based on 100 parts by mass of the total amount of the vinyl aromatic copolymer rubber (I) and the ethylenic copolymer rubber (II).Type: ApplicationFiled: September 14, 2012Publication date: December 4, 2014Applicant: ASAHI KASEI CHEMICALS CORPORATIONInventors: Daisuke Shimizu, Yoshifumi Araki, Katsumi Suzuki
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Patent number: 8901214Abstract: The present invention provides a resin composition that simultaneously (1) supports high productivities, (2) is resistant to bleed out by the flame retardant present in the composition, (3) is resistant to migration of its components to another resin, (4) exhibits a high flame retardancy, and (5) exhibits high flexibility. The resin composition includes components (A) a polyphenylene ether, (B) a hydrogenated copolymer, (C) a styrene resin and/or olefin resin, and (D) a metal phosphinate, wherein the component (B) includes (B1) a polymer block principally comprising an aromatic vinyl monomer unit, and (B2) a hydrogenated copolymer block principally comprising an aromatic vinyl monomer unit and a conjugated diene monomer unit, and a content of the aromatic vinyl monomer unit in the (B2) is 20 to 95% by weight, and a content of the aromatic vinyl monomer unit in the (B) is 35 to 80% by weight.Type: GrantFiled: September 23, 2011Date of Patent: December 2, 2014Assignee: Asahi Kasei Chemicals CorporationInventors: Yoshifumi Araki, Takashi Sato, Takahiro Hisasue
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Patent number: 8901222Abstract: The polyphenylene ether according to the present invention includes 5 to 20% by mass of a component having a molecular weight of 50,000 or more and 12 to 30% by mass of a component having a molecular weight of 8,000 or less. The resin composition according to the present invention includes the polyphenylene ether (a) and a hydrogenated block copolymer (b) prepared by hydrogenating a block copolymer including at least two polymer blocks A having a vinyl aromatic compound and at least one polymer block B having a conjugated diene compound, wherein the number average molecular weight (Mnb) of the hydrogenated block copolymer is 100,000 or less, and the number average molecular weight (MnbA) of at least one polymer block of the polymer blocks A is 8,000 or more.Type: GrantFiled: October 13, 2010Date of Patent: December 2, 2014Assignee: Asahi Kasei Chemicals CorporationInventors: Shunichiro I, Yoshikuni Akiyama, Hiroshi Kamo, Yoshifumi Araki, Toru Yamaguchi, Tomohiro Kondo
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Patent number: 8865811Abstract: The polyphenylene ether according to the present invention includes 5 to 20% by mass of a component having a molecular weight of 50,000 or more and 12 to 30% by mass of a component having a molecular weight of 8,000 or less. The resin composition according to the present invention includes the polyphenylene ether (a) and a hydrogenated block copolymer (b) prepared by hydrogenating a block copolymer including at least two polymer blocks A having a vinyl aromatic compound and at least one polymer block B having a conjugated diene compound, wherein the number average molecular weight (Mnb) of the hydrogenated block copolymer is 100,000 or less, and the number average molecular weight (MnbA) of at least one polymer block of the polymer blocks A is 8,000 or more.Type: GrantFiled: October 13, 2010Date of Patent: October 21, 2014Assignee: Asahi Kasei Chemicals CorporationInventors: Shunichiro I, Yoshikuni Akiyama, Hiroshi Kamo, Yoshifumi Araki, Toru Yamaguchi, Tomohiro Kondo
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Patent number: 8865804Abstract: The present invention provides a resin composition that simultaneously (1) supports high productivities, (2) is resistant to bleed out by the flame retardant present in the composition, (3) is resistant to migration of its components to another resin, (4) exhibits a high flame retardancy, and (5) exhibits high flexibility. The resin composition includes components (A) a polyphenylene ether, (B) a hydrogenated copolymer, (C) a styrene resin and/or olefin resin, and (D) a metal phosphinate, wherein the component (B) includes (B1) a polymer block principally comprising an aromatic vinyl monomer unit, and (B2) a hydrogenated copolymer block principally comprising an aromatic vinyl monomer unit and a conjugated diene monomer unit, and a content of the aromatic vinyl monomer unit in the (B2) is 20 to 95% by weight, and a content of the aromatic vinyl monomer unit in the (B) is 35 to 80% by weight.Type: GrantFiled: September 23, 2011Date of Patent: October 21, 2014Assignee: Asahi Kasei Chemicals CorporationInventors: Yoshifumi Araki, Takashi Sato, Takahiro Hisasue
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Patent number: 8722799Abstract: There is provided a thermoplastic elastomer composition having excellent flexibility, mechanical properties, scratch resistance, abrasion resistance, and low-temperature characteristics. A crosslinked thermoplastic elastomer composition comprising 5 to 70 parts by mass of (C) a hydrogenated product of a block copolymer having at least one conjugated diene monomer unit block and at least one vinyl aromatic monomer unit block, and 20 to 150 parts by mass of (D) an olefin-based resin, based on 100 parts by mass of the total of (A) an ethylene-?-olefin copolymer comprising an ethylene unit and an ?-olefin unit having 3 to 20 carbon atoms, and (B) a copolymer having at least one hydrogenated copolymer block mainly composed of a conjugated diene monomer unit and a vinyl aromatic monomer unit, wherein a mass ratio ((A)/(B)) of the (A) component and the (B) component is from 20/80 to 75/25.Type: GrantFiled: December 4, 2009Date of Patent: May 13, 2014Assignee: Asahi Kasei Chemicals CorporationInventors: Yutaka Eguchi, Shinichi Shibayama, Yoshifumi Araki
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Publication number: 20140121329Abstract: The present invention relates to a method for producing a hydrogenated conjugated diene copolymer including a polymerization step and a hydrogenation step, wherein in the polymerization step, a conjugated diene copolymer having a high vinyl bond amount of a conjugated diene block moiety and a narrow molecular weight distribution can be produced, and in the hydrogenation step, the rate of hydrogenation is high and productivity is excellent.Type: ApplicationFiled: May 11, 2012Publication date: May 1, 2014Applicant: Asahi Kasei Chemicals CorporationInventors: Yoshifumi Araki, Eiji Sasaya, Kenta Shibuya
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Patent number: 8541504Abstract: Provided in this invention is an impact absorber composition comprising a copolymer containing an aromatic vinyl compound, wherein the peak of tan ? of the copolymer obtained from the measurement of the dynamic viscoelasticity is in the range of more than 0° C. to 20° C. or less, the value of tan ? is 0.4 or more in the whole temperature range of 5° C. to 15° C., and the value of tan ? at 15° C. is 0.5 or more.Type: GrantFiled: February 19, 2008Date of Patent: September 24, 2013Assignee: Asahi Kasei Chemicals CorporationInventors: Yasuhiro Kusanose, Yoshifumi Araki
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Publication number: 20130231430Abstract: The polyphenylene ether according to the present invention includes 5 to 20% by mass of a component having a molecular weight of 50,000 or more and 12 to 30% by mass of a component having a molecular weight of 8,000 or less. The resin composition according to the present invention includes the polyphenylene ether (a) and a hydrogenated block copolymer (b) prepared by hydrogenating a block copolymer including at least two polymer blocks A having a vinyl aromatic compound and at least one polymer block B having a conjugated diene compound, wherein the number average molecular weight (Mnb) of the hydrogenated block copolymer is 100,000 or less, and the number average molecular weight (MnbA) of at least one polymer block of the polymer blocks A is 8,000 or more.Type: ApplicationFiled: October 13, 2010Publication date: September 5, 2013Applicant: ASAHI KASEI CHEMICALS CORPORATIONInventors: Shunichiro I, Yoshikuni Akiyama, Hiroshi Kamo, Yoshifumi Araki, Toru Yamaguchi, Tomohiro Kondo