Patents by Inventor Mihoko Yamamoto
Mihoko Yamamoto 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: 11539095Abstract: An in-vehicle lithium ion battery member produced by molding a resin composition containing (a) a polyphenylene ether resin, the resin composition having a critical strain in a chemical resistance evaluation of 0.5% or more and a Charpy impact strength at 23° C. of 20 kJ/m2 or more.Type: GrantFiled: December 4, 2018Date of Patent: December 27, 2022Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Hiroya Yokoyama, Nozomi Inagaki, Mihoko Yamamoto
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Publication number: 20220389164Abstract: The present disclosure is directed to provide a reinforced resin composition excellent in mechanical strength at elevated temperatures and a molded product including such a reinforced resin composition. A reinforced resin composition of the present disclosure includes (A) a polyamide; (B) a polyamide; (C) a polyphenylene ether; and (D) an inorganic filler, wherein a mass ratio of the component (C) with respect to 100 parts by mass of a sum of the component (A), the component (B), and the component (C) is from 20 to 50 parts by mass, ?HTcMt is 10 J/g or more, and ?HMpMt is 35 J/g or less.Type: ApplicationFiled: October 21, 2020Publication date: December 8, 2022Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Hayato KISHIGAMI, Mihoko YAMAMOTO
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Publication number: 20220251375Abstract: A resin composition containing (a) a polyphenylene ether resin, (b) a polypropylene resin, (c) a compatibilizer, (d) an inorganic filler, and (e) a hydrotalcite-like compound, and a molded product obtained by molding the resin composition.Type: ApplicationFiled: May 15, 2020Publication date: August 11, 2022Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Miki TOKUYAMA, Nozomi INAGAKI, Mihoko YAMAMOTO
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Patent number: 11352496Abstract: A resin composition of the present disclosure comprises (a) a polyphenylene ether resin; and (b) a graft copolymer wherein 30 to 70% by mass of an ethylene-?-olefin copolymer rubber latex having a gel content ratio of 30 to 90% by mass and a volume average particle diameter of a rubber dispersion of 0.2 to 1.0 ?m is graft-polymerized with 30 to 70% by mass of an aromatic vinyl compound, wherein the (a) component forms a continuous phase.Type: GrantFiled: June 27, 2018Date of Patent: June 7, 2022Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Nozomi Inagaki, Mihoko Yamamoto
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Publication number: 20200313131Abstract: An in-vehicle lithium ion battery member produced by molding a resin composition containing (a) a polyphenylene ether resin, the resin composition having a critical strain in a chemical resistance evaluation of 0.5% or more and a Charpy impact strength at 23° C. of 20 kJ/m2 or more.Type: ApplicationFiled: December 4, 2018Publication date: October 1, 2020Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Hiroya YOKOYAMA, Nozomi INAGAKI, Mihoko YAMAMOTO
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Patent number: 10723840Abstract: Provided is a polyphenylene ether resin composition having excellent heat aging resistance and fluidity. A polyphenylene ether includes at least one structural unit selected from chemical formulae (1), (2), and (3).Type: GrantFiled: October 3, 2016Date of Patent: July 28, 2020Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Chihiro Orimo, Toru Yamaguchi, Mihoko Yamamoto, Akira Mitsui
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Patent number: 10696843Abstract: Provided is a polyphenylene ether flame-retardant resin composition having excellent flame retardance and long-term flame retardance. The flame-retardant resin composition contains: (A) a resin including (A-1) a polyphenylene ether; and (B) a flame retardant. The (A-1) component has a content of 50 mass % or more when the flame-retardant resin composition minus ash content, corresponding to a residue obtained upon burning of the flame-retardant resin composition, is taken to be 100 mass %. A shaped article of 12.6 cm in length, 1.3 cm in width, and 1.6 mm in thickness formed from the flame-retardant resin composition exhibits a rate of change of chloroform-insoluble content of 15 mass % or less through aging in which the shaped article is left for 1,000 hours at 150° C. in an atmospheric air.Type: GrantFiled: October 3, 2016Date of Patent: June 30, 2020Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Chihiro Maeda, Mihoko Yamamoto, Akira Mitsui
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Publication number: 20200165447Abstract: A resin composition of the present disclosure comprises (a) a polyphenylene ether resin; and (b) a graft copolymer wherein 30 to 70% by mass of an ethylene-?-olefin copolymer rubber latex having a gel content ratio of 30 to 90% by mass and a volume average particle diameter of a rubber dispersion of 0.2 to 1.0 ?m is graft-polymerized with 30 to 70% by mass of an aromatic vinyl compound, wherein the (a) component forms a continuous phase.Type: ApplicationFiled: June 27, 2018Publication date: May 28, 2020Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Nozomi INAGAKI, Mihoko YAMAMOTO
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Patent number: 10611912Abstract: Provided are a resin composition and a shaped product having excellent smoke generation properties and chemical resistance. The resin composition and the shaped product contain: a polyphenylene ether resin (I); a polypropylene resin (II); a hydrogenated block copolymer (III) that is a hydrogenated product of a block copolymer including a polymer block A and a polymer block B in which the total amount of vinyl bonding is 30-90%; and a phosphate ester compound (IV). Relative to 100 parts by mass, in total, of components (I) and (II), component (I) is 40-99 parts by mass, component (II) is 1-60 parts by mass, component (III) is 1-20 parts by mass, and component (IV) is 5-45 parts by mass. A partition ratio of component (IV) present in a fraction that dissolves in chloroform and component (IV) present in a fraction that dissolves in o-dichlorobenzene is 10 or more.Type: GrantFiled: July 17, 2019Date of Patent: April 7, 2020Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Nozomi Inagaki, Mihoko Yamamoto
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Publication number: 20190338120Abstract: Provided are a resin composition and a shaped product having excellent smoke generation properties and chemical resistance. The resin composition and the shaped product contain: a polyphenylene ether resin (I); a polypropylene resin (II); a hydrogenated block copolymer (III) that is a hydrogenated product of a block copolymer including a polymer block A and a polymer block B in which the total amount of vinyl bonding is 30-90%; and a phosphate ester compound (IV). Relative to 100 parts by mass, in total, of components (I) and (II), component (I) is 40-99 parts by mass, component (II) is 1-60 parts by mass, component (III) is 1-20 parts by mass, and component (IV) is 5-45 parts by mass. A partition ratio of component (IV) present in a fraction that dissolves in chloroform and component (IV) present in a fraction that dissolves in o-dichlorobenzene is 10 or more.Type: ApplicationFiled: July 17, 2019Publication date: November 7, 2019Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Nozomi INAGAKI, Mihoko YAMAMOTO
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Patent number: 10435508Abstract: Provided is a flame retardant resin composition excellent in flame retardance, and surface smoothness, appearance, flame retardance and electrical properties after a long-term thermal aging (e.g. 150° C., 500 hours) while maintaining mechanical and electrical properties. The disclosed flame retardant resin composition is a flame retardant resin composition containing a polyphenylene ether, in which, based on UL94 flammability test, an average burning time of a molded product having a length of 12.6 cm, a width of 1.3 cm and a thickness of 1.6 mm formed of the flame retardant resin composition before and after the aging processing in which the molded product is left to stand at 150° C. for 1000 hours under the atmospheric pressure is within 10 seconds, and a change rate of chloroform-insoluble component of the molded product before and after the aging processing is 15 mass % or less.Type: GrantFiled: October 3, 2017Date of Patent: October 8, 2019Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Chihiro Maeda, Mihoko Yamamoto, Akira Mitsui
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Patent number: 10400103Abstract: The thermoplastic resin composition contains (A) a polyamide, (B) a polyphenylene ether, and (C) a compatibilizer. When the thermoplastic resin composition is molded into a specimen, a continuous phase containing the polyamide (A) and a dispersed phase containing the polyphenylene ether (B) are formed in the specimen, and E-20 represents a mean ellipticity of the dispersed phase in region I extending from a surface of the hinge portion to a depth of 20 ?m in the thickness direction, and E-mid represents a mean ellipticity of the dispersed phase in region II extending from a distance, measured along the thickness direction from the surface, equal to 48% of the thickness to a distance, measured along the thickness direction from the surface, equal to 52% of the thickness, the following formula (1) is satisfied: 4.0?(E-20)/(E-mid)??(1).Type: GrantFiled: December 5, 2016Date of Patent: September 3, 2019Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Chihiro Maeda, Yuo Umei, Mihoko Yamamoto
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Publication number: 20190218382Abstract: A method of manufacturing a resin composition is provided. The resin composition includes: 100 parts by mass in total of (A) polypropylene-based resin and (B) polyphenylene ether resin; 1 part to 20 parts by mass of (C) an admixture; and 0.01 parts to 0.5 parts by mass of (D) one or more compounds selected from the group consisting of a higher fatty acid, a higher fatty acid metal salt, and a higher fatty acid ester. A proportion XD(B+C) of the component (D) present in a whole fraction of 100 mass % dissolved in the chloroform is 0.13 mass % to 0.80 mass %. The method includes a step of melt-kneading the whole component (B), the whole component (C), and 15 mass % to 100 mass % of the component (D) to obtain kneaded material, and a step of adding the whole component (A) and the rest of the component (D).Type: ApplicationFiled: March 26, 2019Publication date: July 18, 2019Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Mihoko YAMAMOTO, Nozomi INAGAKI
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Publication number: 20190119492Abstract: Provided is a polyphenylene ether flame-retardant resin composition having excellent flame retardance and long-term flame retardance. The flame-retardant resin composition contains: (A) a resin including (A-1) a polyphenylene ether; and (B) a flame retardant. The (A-1) component has a content of 50 mass % or more when the flame-retardant resin composition minus ash content, corresponding to a residue obtained upon burning of the flame-retardant resin composition, is taken to be 100 mass %. A shaped article of 12.6 cm in length, 1.3 cm in width, and 1.6 mm in thickness formed from the flame-retardant resin composition exhibits a rate of change of chloroform-insoluble content of 15 mass % or less through aging in which the shaped article is left for 1,000 hours at 150° C. in an atmospheric air.Type: ApplicationFiled: October 3, 2016Publication date: April 25, 2019Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Chihiro MAEDA, Mihoko YAMAMOTO, Akira MITSUI
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Publication number: 20190002637Abstract: Provided is a polyphenylene ether resin composition having excellent heat aging resistance and fluidity. A polyphenylene ether includes at least one structural unit selected from chemical formulae (1), (2), and (3).Type: ApplicationFiled: October 3, 2016Publication date: January 3, 2019Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Chihiro ORIMO, Toru YAMAGUCHI, Mihoko YAMAMOTO, Akira MITSUI
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Publication number: 20180223099Abstract: Provided is a pellet that contains a polyphenylene ether resin in a high concentration, is highly suitable for use as a modifier for imparting creep resistance, and has excellent post-molding external appearance. The pellet contains 80 mass % to 99 mass % of a polyphenylene ether resin (I) and 1 mass % to 20 mass % of a hydrogenated block copolymer (II) that is an at least partially hydrogenated product of a block copolymer including a polymer block P of mainly a vinyl aromatic compound and a polymer block Q of mainly a conjugated diene compound in which the total of 1,2-vinyl bond content and 3,4-vinyl bond content is 50% to 95%. No black spot contaminants having a major diameter of greater than 0.7 mm are present on front and rear surfaces of four plates of 90.0 mm×50.0 mm×2.0 mm in size obtained through molding of the pellet.Type: ApplicationFiled: February 6, 2017Publication date: August 9, 2018Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Nozomi INAGAKI, Mihoko YAMAMOTO
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Publication number: 20180127580Abstract: Provided are a resin composition and a shaped product having excellent smoke generation properties and chemical resistance. The resin composition and the shaped product contain: a polyphenylene ether resin (I); a polypropylene resin (II); a hydrogenated block copolymer (III) that is a hydrogenated product of a block copolymer including a polymer block A and a polymer block B in which the total amount of vinyl bonding is 30-90%; and a phosphate ester compound (IV). Relative to 100 parts by mass, in total, of components (I) and (II), component (I) is 40-99 parts by mass, component (II) is 1-60 parts by mass, component (III) is 1-20 parts by mass, and component (IV) is 5-45 parts by mass. A partition ratio of component (IV) present in a fraction that dissolves in chloroform and component (IV) present in a fraction that dissolves in o-dichlorobenzene is 10 or more.Type: ApplicationFiled: June 20, 2016Publication date: May 10, 2018Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Nozomi INAGAKI, Mihoko YAMAMOTO
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Publication number: 20180094102Abstract: Provided is a flame retardant resin composition excellent in flame retardance, and surface smoothness, appearance, flame retardance and electrical properties after a long-term thermal aging (e.g. 150° C., 500 hours) while maintaining mechanical and electrical properties. The disclosed flame retardant resin composition is a flame retardant resin composition containing a polyphenylene ether, in which, based on UL94 flammability test, an average burning time of a molded product having a length of 12.6 cm, a width of 1.3 cm and a thickness of 1.6 mm formed of the flame retardant resin composition before and after the aging processing in which the molded product is left to stand at 150° C. for 1000 hours under the atmospheric pressure is within 10 seconds, and a change rate of chloroform-insoluble component of the molded product before and after the aging processing is 15 mass % or less.Type: ApplicationFiled: October 3, 2017Publication date: April 5, 2018Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Chihiro MAEDA, Mihoko YAMAMOTO, Akira MITSUI
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Publication number: 20180057671Abstract: A resin composition that has an excellent balance between thermal creep resistance and toughness and from which a molded product with favorable appearance can be obtained is provided. The resin composition includes: 100 parts by mass in total of (A) polypropylene-based resin and (B) polyphenylene ether resin; 1 parts to 20 parts by mass of (C) an admixture; and 0.01 parts to 0.5 parts by mass of (D) one or more compounds selected from the group consisting of a higher fatty acid, a higher fatty acid metal salt, and a higher fatty acid ester, wherein when the resin composition is dissolved in chloroform, a proportion XD(B+C) of the component (D) present in a whole fraction of 100 mass % dissolved in the chloroform is 0.13 mass % to 0.80 mass %.Type: ApplicationFiled: January 18, 2017Publication date: March 1, 2018Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Mihoko YAMAMOTO, Nozomi INAGAKI
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Publication number: 20180057685Abstract: Provided is a resin composition having excellent flame retardance, molding processability, and post-heat aging flame retardance. A flame-retardant resin composition contains: (A) a polyphenylene ether; (B) at least one thermoplastic resin selected from the group consisting of (B-1) a polystyrene resin, (B-2) a polyamide resin, (B-3) a polypropylene resin, and (B-4) a polyphenylene sulfide resin; and (C) a flame retardant. The (A) component has a content of less than 50 mass % when the flame-retardant resin composition minus ash content is taken to be 100 mass %. The flame-retardant resin composition has a flame retardance level of V-0 as measured by a UL 94 vertical burning test. A molded article formed from the flame-retardant resin composition exhibits a rate of change of chloroform-insoluble content of no greater than 15 mass % before and after being subjected to aging in which the molded article is left for 1,000 hours at 150° C. in an atmospheric environment.Type: ApplicationFiled: June 20, 2017Publication date: March 1, 2018Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Chihiro MAEDA, Mihoko YAMAMOTO, Akira MITSUI