Patents by Inventor Yuichi Shindo
Yuichi Shindo 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: 20190284392Abstract: An object of the present invention is to provide a PC/ABS-based thermoplastic resin composition and a molded article thereof excellent in impact resistance. A thermoplastic resin composition comprising: a polycarbonate (A); at least one resin (B) selected from the group consisting of an ABS resin, an ASA resin, an AES resin and a SAN resin; an unsaturated dicarboxylic acid anhydride-based copolymer (C); and an additive (D), wherein the additive (D) has a function promoting hydrolysis of polycarbonate, and with a content of (C) is 2 to 25 parts by mass.Type: ApplicationFiled: June 4, 2019Publication date: September 19, 2019Applicants: DENKA COMPANY LIMITED, NATIONAL UNIVERSITY CORPORATION YAMAGATA UNIVERSITYInventors: Yuichi SHINDO, Tomoki KOBAYASHI, Kohhei NISHINO, Tetsuo TAKAYAMA
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Patent number: 10344104Abstract: An object of the present invention is to provide a copolymer for a compatibilizer capable of increasing impact resistance strength, heat resistance and toughness without lowering fluidity. The copolymer for a compatibilizer contains polyamide resin and at least one resin selected from ABS resin, SAN resin, ASA resin, AES resin. A resin composition comprising 0.5 to 11 mass % of copolymer (A) for a polymer blend compatibilizer, 25 to 60 mass % of polyamide resin (B), and 29 to 74.5 mass % of resin (C) is formed. The resin (C) is at least one resin selected from ABS resin, SAN resin, ASA resin, and AES resin. The copolymer (A) for a polymer blend compatibilizer has 30 to 60 mass % of a maleimide-based monomer unit, 35 to 69 mass % of a styrene-based monomer unit, 1 to 5 mass % of unsaturated dicarboxylic anhydride monomer unit, and has a weight average molecular weight (Mw) of 60,000 to 125,000.Type: GrantFiled: May 18, 2016Date of Patent: July 9, 2019Assignee: DENKA COMPANY LIMITEDInventors: Yuichi Shindo, Kohhei Nishino, Masamichi Endo, Yoshinari Kurokawa
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Publication number: 20180273749Abstract: An object of the present invention is to provide a PC/ABS-based thermoplastic resin composition and a molded article thereof excellent in impact resistance. A thermoplastic resin composition comprising: a polycarbonate (A); at least one resin (B) selected from the group consisting of an ABS resin, an ASA resin, an AES resin and a SAN resin; an unsaturated dicarboxylic acid anhydride-based copolymer (C); and an additive (D), wherein the additive (D) has a function promoting hydrolysis of polycarbonate, and with a content of (C) is 2 to 25 parts by mass.Type: ApplicationFiled: October 5, 2016Publication date: September 27, 2018Applicants: DENKA COMPANY LIMITED, NATIONAL UNIVERSITY CORPORATION YAMAGATA UNIVERSITYInventors: Yuichi SHINDO, Tomoki KOBAYASHI, Kohhei NISHINO, Tetsuo TAKAYAMA
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Publication number: 20180134820Abstract: An object of the present invention is to provide a copolymer for a compatibilizer capable of increasing impact resistance strength, heat resistance and toughness without lowering fluidity. The copolymer for a compatibilizer contains polyamide resin and at least one resin selected from ABS resin, SAN resin, ASA resin, AES resin. A resin composition comprising 0.5 to 11 mass % of copolymer (A) for a polymer blend compatibilizer, 25 to 60 mass % of polyamide resin(B), and 29 to 74.5 mass % of resin (C) is formed. The resin (C) is at least one resin selected from ABS resin, SAN resin, ASA resin, and AES resin. The copolymer (A) for a polymer blend compatibilizer has 30 to 60 mass % of a maleimide-based monomer unit, 35 to 69 mass % of a styrene-based monomer unit, 1 to 5 mass % of unsaturated dicarboxylic anhydride monomer unit, and has a weight average molecular weight (Mw) of 60,000 to 125,000.Type: ApplicationFiled: May 18, 2016Publication date: May 17, 2018Applicant: Denka Company LimitedInventors: Yuichi SHINDO, Kohhei NISHINO, Masamichi ENDO, Yoshinari KUROKAWA
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Patent number: 9873787Abstract: A copolymer for improving heat resistance of a methacrylic resin which can achieve preservation of excellent transparency of the methacrylic resin and improvement in heat resistance, and can provide a molded product having excellent appearance, by adding the copolymer to the methacrylic resin, is provided. According to the present invention, a copolymer for improving heat resistance of a methacrylic resin, including: 45 to 85 mass % of an aromatic vinyl monomer unit; 5 to 45 mass % of a (meth)acrylic acid ester monomer unit; and 10 to 20 mass % of an unsaturated dicarboxylic acid anhydride monomer unit; wherein the copolymer has a total light transmittance of 88% or more, the total light transmittance being measured in accordance with ASTM D1003 for a sample with 2 mm-thickness, is provided.Type: GrantFiled: July 21, 2016Date of Patent: January 23, 2018Assignee: DENKA COMPANY LIMITEDInventors: Tetsuo Noguchi, Takeshi Ohtsuka, Masanori Matsumoto, Yuichi Shindo
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Publication number: 20170369694Abstract: A resin composition that is transparent and excellent in weather resistance and heat resistance, and a molded article thereof are provided. According to the present invention, a transparent and highly heat-resistant resin composition, comprising: an aromatic vinyl-(meth) acrylic acid ester-unsaturated dicarboxylic acid anhydride copolymer (A); and an ultraviolet absorbing agent (B); wherein an amount of a residual unsaturated dicarboxylic acid anhydride monomer contained in the copolymer (A) is 100 ppm or less, and a content of the ultraviolet absorbing agent (B) with respect to a total amount of (A) and (B) is 0.03 to 1.0 mass %, is provided. The composition may further comprise a methacrylic resin (C) in addition to (A) and (B).Type: ApplicationFiled: January 14, 2016Publication date: December 28, 2017Applicant: Denka Company LimitedInventors: Kohhei Nishino, Yuichi Shindo, Yuichi Shimokoba, Tetsuo Noguchi, Masanori Matsumoto, Yoshinari Kurokawa
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Publication number: 20170349740Abstract: Provided are a polycarbonate/ABS-based thermoplastic resin composition excellent in hydrolysis resistance and impact resistance and a molded article thereof. A thermoplastic resin composition includes: polycarbonate (A); a graft copolymer (B) produced by graft copolymerization of a rubbery polymer at least with a styrene-based monomer and an acrylonitrile-based monomer and containing a metal element; a styrene-acrylonitrile based copolymer (C); and an unsaturated dicarboxylic anhydride-based copolymer (D), wherein a content of (D) is 2 to 25 mass %.Type: ApplicationFiled: December 18, 2015Publication date: December 7, 2017Applicants: Denka Company Limited, National University Corporation Yamagata UniversityInventors: Kohhei Nishino, Yuichi Shindo, Yoshinari Kurokawa, Tetsuo Takayama, Kyohei Ikeda
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Publication number: 20160326360Abstract: A copolymer for improving heat resistance of a methacrylic resin which can achieve preservation of excellent transparency of the methacrylic resin and improvement in heat resistance, and can provide a molded product having excellent appearance, by adding the copolymer to the methacrylic resin, is provided. According to the present invention, a copolymer for improving heat resistance of a methacrylic resin, including: 45 to 85 mass % of an aromatic vinyl monomer unit; 5 to 45 mass % of a (meth)acrylic acid ester monomer unit; and 10 to 20 mass % of an unsaturated dicarboxylic acid anhydride monomer unit; wherein the copolymer has a total light transmittance of 88% or more, the total light transmittance being measured in accordance with ASTM D1003 for a sample with 2 mm-thickness, is provided.Type: ApplicationFiled: July 21, 2016Publication date: November 10, 2016Applicant: DENKA COMPANY LIMITEDInventors: Tetsuo NOGUCHI, Takeshi OHTSUKA, Masanori MATSUMOTO, Yuichi SHINDO
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Patent number: 9365713Abstract: Provided is a copolymer for improving heat resistance of aromatic vinyl-vinyl cyanide based resin which can achieve preservation of excellent transparency of the aromatic vinyl-vinyl cyanide based resin, improvement in heat resistance, and a molded product having excellent appearance, by adding the copolymer to the aromatic vinyl-vinyl cyanide based resin. A copolymer for improving heat resistance of an aromatic vinyl-vinyl cyanide based resin, including: 45 to 85 mass % of an aromatic vinyl monomer unit; 5 to 45 mass % of a (meth)acrylic acid ester monomer unit; and 10 to 20 mass % of an unsaturated dicarboxylic acid anhydride monomer unit; wherein the copolymer has a total light transmittance of 88% or more, the total light transmittance being measured in accordance with ASTM D1003 for a sample with 2 mm-thickness, is provided.Type: GrantFiled: October 10, 2013Date of Patent: June 14, 2016Assignee: DENKA COMPANY LIMITEDInventors: Tetsuo Noguchi, Takeshi Ohtsuka, Masanori Matsumoto, Yuichi Shindo
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Publication number: 20150284557Abstract: Provided is a copolymer for improving heat resistance of aromatic vinyl-vinyl cyanide based resin which can achieve preservation of excellent transparency of the aromatic vinyl-vinyl cyanide based resin, improvement in heat resistance, and a molded product having excellent appearance, by adding the copolymer to the aromatic vinyl-vinyl cyanide based resin. A copolymer for improving heat resistance of an aromatic vinyl-vinyl cyanide based resin, including: 45 to 85 mass % of an aromatic vinyl monomer unit; 5 to 45 mass % of a (meth)acrylic acid ester monomer unit; and 10 to 20 mass % of an unsaturated dicarboxylic acid anhydride monomer unit; wherein the copolymer has a total light transmittance of 88% or more, the total light transmittance being measured in accordance with ASTM D1003 for a sample with 2 mm-thickness, is provided.Type: ApplicationFiled: October 10, 2013Publication date: October 8, 2015Inventors: Tetsuo Noguchi, Takeshi Ohtsuka, Masanori Matsumoto, Yuichi Shindo
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Publication number: 20150203610Abstract: A copolymer for improving heat resistance of a methacrylic resin which can achieve preservation of excellent transparency of the methacrylic resin and improvement in heat resistance, and can provide a molded product having excellent appearance, by adding the copolymer to the methacrylic resin, is provided. According to the present invention, a copolymer for improving heat resistance of a methacrylic resin, including: 45 to 85 mass % of an aromatic vinyl monomer unit; 5 to 45 mass % of a (meth)acrylic acid ester monomer unit; and 10 to 20 mass % of an unsaturated dicarboxylic acid anhydride monomer unit; wherein the copolymer has a total light transmittance of 88% or more, the total light transmittance being measured in accordance with ASTM D1003 for a sample with 2 mm-thickness, is provided.Type: ApplicationFiled: July 29, 2013Publication date: July 23, 2015Inventors: Tetsuo Noguchi, Takeshi Ohtsuka, Masanori Matsumoto, Yuichi Shindo