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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Patent number: 10487249Abstract: The adhesive composition according to the invention of the present application contains a block copolymer (a) having a block mainly comprising a vinyl aromatic monomer unit, a tackifier (b) and an oil (c), in which the block copolymer (a) contains a partially hydrogenated block copolymer (a-1), the partially hydrogenated block copolymer (a-1) has a vinyl aromatic monomer unit and a conjugated diene monomer unit, the content of the vinyl aromatic monomer unit is 10 mass % or more and 19 mass % or less based on 100 mass % of the partially hydrogenated block copolymer (a-1), and the hydrogenation ratio of double bonds contained in the conjugated diene monomer unit in the partially hydrogenated block copolymer (a-1) is 15 mol % or more and less than 80 mol % based on the total (amount) of double bonds before hydrogenation.Type: GrantFiled: January 22, 2015Date of Patent: November 26, 2019Assignee: Asahi Kasei Kabushiki KaishaInventors: Yoshifumi Araki, Kosuke Nakatani, Shigeo Nakajima
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Patent number: 10472514Abstract: 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: GrantFiled: January 22, 2015Date of Patent: November 12, 2019Assignees: Asahi Kasei Kabushiki Kaisha, Japan Elastomer Co., Ltd.Inventors: Takahiro Hisasue, Shigeo Nakajima, Yoshifumi Araki, Yukinori Nakamichi
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Patent number: 10414849Abstract: A partially hydrogenated block copolymer of the present invention includes: a polymer block (A) containing a vinyl aromatic monomer unit as a main component: and a polymer block (B) containing a conjugated diene monomer unit, wherein in a differential molecular weight distribution (B) of a degradation product of the partially hydrogenated block copolymer obtained by an ozone degradation method, a distribution of degree of hydrogenation H, which is given by a maximum peak height in a region of a molecular weight of 800 or more and 3,000 or less, is 0.01 to 0.5.Type: GrantFiled: July 15, 2016Date of Patent: September 17, 2019Assignee: Asahi Kasei Kabushiki KaishaInventors: Ippei Kameda, Yoshifumi Araki
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Patent number: 10385243Abstract: 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: GrantFiled: January 22, 2015Date of Patent: August 20, 2019Assignees: 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: 10351475Abstract: The asphalt composition of the present invention is an asphalt composition comprising 1% to 15% by mass of a block copolymer (a) and an asphalt (c), wherein the block copolymer (a) comprises a specific block copolymer (a-1) and a specific block copolymer (a-2) in specific amounts, wherein the content of a vinyl aromatic monomer unit in the block copolymer (a) is 34% by mass or more and 55% by mass or less, the number average molecular weight of the block copolymer (a-1) is in the range of 20,000 to 73,000, and the number average molecular weight of the block copolymer (a-2) is 1.5 to 5.0 times higher than the number average molecular weight of the block copolymer (a-1).Type: GrantFiled: May 27, 2015Date of Patent: July 16, 2019Assignee: Asahi Kasei Kabushiki KaishaInventor: Yoshifumi Araki
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Patent number: 10323164Abstract: A hydrogenated block copolymer composition, comprising: a component (A) comprising at least one polymer block comprising a vinyl aromatic hydrocarbon as a primary component and at least one polymer block comprising a conjugated diene compound as a primary component and having a weight-average molecular weight of 30,000 or higher and 500,000 or lower, and a component (B) comprising at least two polymer blocks comprising a vinyl aromatic hydrocarbon and at least one polymer block comprising a conjugated diene compound as a primary component and having a weight-average molecular weight of 50,000 or higher and 1,000,000 or lower, wherein the composition satisfies predetermined requirements.Type: GrantFiled: May 12, 2015Date of Patent: June 18, 2019Assignee: Asahi Kasei Kabushiki KaishaInventors: Kosuke Nakatani, Takahiro Hisasue, Yoshifumi Araki, Tadashi Matsushita, Kenta Shibuya, Takeshi Aoyagi, Ippei Kameda, Atsushi Yasumoto
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Publication number: 20190153273Abstract: The adhesive composition according to the invention of the present application contains a block copolymer (a) having a block mainly comprising a vinyl aromatic monomer unit, a tackifier (b) and an oil (c), in which the block copolymer (a) contains a partially hydrogenated block copolymer (a-1), the partially hydrogenated block copolymer (a-1) has a vinyl aromatic monomer unit and a conjugated diene monomer unit, the content of the vinyl aromatic monomer unit is 10 mass % or more and 19 mass % or less based on 100 mass % of the partially hydrogenated block copolymer (a-1), and the hydrogenation ratio of double bonds contained in the conjugated diene monomer unit in the partially hydrogenated block copolymer (a-1) is 15 mol % or more and less than 80 mol % based on the total (amount) of double bonds before hydrogenation.Type: ApplicationFiled: January 22, 2015Publication date: May 23, 2019Applicant: Asahi Kasei Kabushiki KaishaInventors: Yoshifumi Araki, Kosuke Nakatani, Shigeo Nakajima
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Publication number: 20190153214Abstract: The present invention provides a polymer comprising conjugated diene monomer units and vinyl aromatic monomer units, wherein the polymer has a polymer block (A) comprising principally vinyl aromatic monomer units, and a polymer block (B) comprising conjugated diene monomer units and vinyl aromatic monomer units, and has a Bragg spacing of 27 nm or larger and 50 nm or smaller.Type: ApplicationFiled: January 16, 2015Publication date: May 23, 2019Applicant: Asahi Kasei Kabushiki KaishaInventors: Takayuki Shiromoto, Shigeo Nakajima, Yoshifumi Araki, Takuya Suzuki
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Patent number: 10179850Abstract: The present invention provides a foam which maintains high hardness while being lightweight and has excellent peel strength and permanent compression set, and a foamable composition used to obtain the aforementioned foam. A foamable composition comprising (A) an olefin-based copolymer; (B) a copolymer that is (B-I) and/or (B-II) described below, (B-I) a vinyl aromatic-based copolymer comprising a vinyl aromatic compound and a conjugated diene, and/or a vinyl aromatic-based copolymer comprising a vinyl aromatic compound and alkylene, (B-II) an ethylene-based copolymer having an unsaturated group; (C) an inorganic filler; (D) an organic silane coupling agent; and (E) a foaming agent; wherein a mass ratio of the component (A) to the component (B), (A/B), is from 5/95 to 100/0; an amount of the component (C) is from 0.5 to 35 mass parts, and an amount of the component (E) is from 0.Type: GrantFiled: March 8, 2011Date of Patent: January 15, 2019Assignee: Asahi Kasei Chemicals CorporationInventors: Yasuhiro Kusanose, Mika Horiuchi, Yoshifumi Araki
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Publication number: 20180345261Abstract: The present invention, with the purpose of providing a catalyst composition for hydrogenation having high hydrogenation activity, provides a catalyst composition for hydrogenation, comprising: a titanocene dichloride; an organometal compound comprising one or two or more elements selected from the group consisting of Li, Na, K, Mg, Zn, Al and Ca; an unsaturated compound; and a polar compound, wherein a content ratio of the unsaturated compound to the titanocene dichloride is 0.1 or more and 8.0 or less, and a content ratio of the polar compound to the titanocene dichloride is 0.01 or more and 2.0 or less.Type: ApplicationFiled: November 25, 2016Publication date: December 6, 2018Applicant: Asahi Kasei Kabushiki KaishaInventors: Yoshifumi Araki, Katsunori Nitta, Eiji Sasaya, Takahiro Tsuji
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Patent number: 10144004Abstract: 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: GrantFiled: October 22, 2013Date of Patent: December 4, 2018Assignee: Asahi Kasei Chemicals CorporationInventors: Yoshifumi Araki, Eiji Sasaya, Katsunori Nitta
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Patent number: 10138319Abstract: 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: GrantFiled: January 16, 2015Date of Patent: November 27, 2018Assignee: Asahi Kasei Kabushiki KaishaInventors: Takayuki Shiromoto, Shigeo Nakajima, Yoshifumi Araki, Nobuaki Kubo, Takuya Suzuki
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Patent number: 10138368Abstract: 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: GrantFiled: January 22, 2015Date of Patent: November 27, 2018Assignees: Asahi Kasei Kabushiki Kaisha, Japan Elastomer Co., Ltd.Inventors: Takahiro Hisasue, Shigeo Nakajima, Yoshifumi Araki, Yukinori Nakamichi
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Publication number: 20180201716Abstract: A partially hydrogenated block copolymer of the present invention includes: a polymer block (A) containing a vinyl aromatic monomer unit as a main component: and a polymer block (B) containing a conjugated diene monomer unit, wherein in a differential molecular weight distribution (B) of a degradation product of the partially hydrogenated block copolymer obtained by an ozone degradation method, a distribution of degree of hydrogenation H, which is given by a maximum peak height in a region of a molecular weight of 800 or more and 3,000 or less, is 0.01 to 0.5.Type: ApplicationFiled: July 15, 2016Publication date: July 19, 2018Applicant: Asahi Kasei Kabushiki KaishaInventors: Ippei Kameda, Yoshifumi Araki
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Patent number: 10016749Abstract: 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: GrantFiled: September 12, 2013Date of Patent: July 10, 2018Assignee: Asahi Kasei Chemicals CorporationInventors: Yoshifumi Araki, Eiji Sasaya, Katsunori Nitta
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Patent number: 9738742Abstract: 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: GrantFiled: January 8, 2014Date of Patent: August 22, 2017Assignee: Asahi Kasei Chemicals CorporationInventors: Yoshifumi Araki, Eiji Sasaya, Takuya Suzuki
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Publication number: 20170197879Abstract: The asphalt composition of the present invention is an asphalt composition comprising 1% to 15% by mass of a block copolymer (a) and an asphalt (c), wherein the block copolymer (a) comprises a specific block copolymer (a-1) and a specific block copolymer (a-2) in specific amounts, wherein the content of a vinyl aromatic monomer unit in the block copolymer (a) is 34% by mass or more and 55% by mass or less, the number average molecular weight of the block copolymer (a-1) is in the range of 20,000 to 73,000, and the number average molecular weight of the block copolymer (a-2) is 1.5 to 5.0 times higher than the number average molecular weight of the block copolymer (a-1).Type: ApplicationFiled: May 27, 2015Publication date: July 13, 2017Applicant: Asahi Kasei Kabushiki KaishaInventor: Yoshifumi Araki
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Publication number: 20170088757Abstract: A hydrogenated block copolymer composition, comprising: a component (A) comprising at least one polymer block comprising a vinyl aromatic hydrocarbon as a primary component and at least one polymer block comprising a conjugated diene compound as a primary component and having a weight-average molecular weight of 30,000 or higher and 500,000 or lower, and a component (B) comprising at least two polymer blocks comprising a vinyl aromatic hydrocarbon and at least one polymer block comprising a conjugated diene compound as a primary component and having a weight-average molecular weight of 50,000 or higher and 1,000,000 or lower, wherein the composition satisfies predetermined requirements.Type: ApplicationFiled: May 12, 2015Publication date: March 30, 2017Applicant: Asahi Kasei Kabushiki KaishaInventors: Kosuke Nakatani, Takahiro Hisasue, Yoshifumi Araki, Tadashi Matsushita, Kenta Shibuya, Takeshi Aoyagi, Ippei Kameda, Atsushi Yasumoto
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Publication number: 20170058117Abstract: A thermoplastic resin composition comprising: a block copolymer (a) having 60 to 80% by mass of a vinyl aromatic monomer unit and 40 to 20% by mass of a conjugated diene monomer unit; and a copolymer (b) having 60 to 90% by mass of a vinyl aromatic monomer unit and 40 to 10% by mass of an unsaturated nitrile monomer unit, wherein the block copolymer (a) has at least one polymer block (S) primarily having a vinyl aromatic monomer unit, the block copolymer (a) has at least one tan ? peak of dynamic viscoelasticity at a temperature in a range of ?73 to ?10° C., and a mass ratio (a)/(b) of the block copolymer (a) to the copolymer (b) is 1/99 to 80/20.Type: ApplicationFiled: February 13, 2015Publication date: March 2, 2017Applicant: Asahi Kasei Kabushiki KaishaInventors: Naohiko Sato, Yoshifumi Araki
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Patent number: 9546238Abstract: 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: GrantFiled: May 11, 2012Date of Patent: January 17, 2017Assignee: Asahi Kasei Chemicals CorporationInventors: Yoshifumi Araki, Eiji Sasaya, Kenta Shibuya