Patents by Inventor Norihiro Sugihara
Norihiro Sugihara 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: 11267958Abstract: The polyisoprene-containing latex composition of the present it comprises the following components (a) and (b): (a) zinc ethylphenyldithiocarbamate; and (b) 1-o-tolylbiguanide. Thus, a molded article of the latex composition has high tensile strength. Further, even after the latex composition is stored for a longer period of time than before, a decrease in the tensile strength of the obtained molded article is suppressed.Type: GrantFiled: August 20, 2018Date of Patent: March 8, 2022Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Kouhei Sawada, Hiromasa Miyazaki, Norihiro Sugihara
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Patent number: 11242476Abstract: The present invention provides an epoxy resin adhesive that exhibits low shrinkage and excellent adhesiveness. The epoxy resin adhesive includes (A) an epoxy resin, (B) a curing agent, and (C) a particulate polyolefin-based resin having a volume average particle size of 1 to 25 ?m, wherein the particulate polyolefin-based resin is spherical, and wherein the particulate polyolefin-based resin is present in an amount of 1 to 50 parts by mass per 100 parts by mass of the epoxy resin.Type: GrantFiled: December 2, 2014Date of Patent: February 8, 2022Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Masafumi Okamoto, Norihiro Sugihara, Taiji Matsukawa
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Publication number: 20200270380Abstract: Provided is an ethylene-based resin aqueous dispersion that can form a film having excellent airtightness and adhesiveness when applied to a substrate, such as a fiber substrate. The ethylene-based resin aqueous dispersion of the present invention comprises a copolymer containing an ethylene unit and an ?,?-unsaturated carboxylic acid salt unit, a fatty acid salt, and an aqueous medium, wherein the copolymer and the fatty acid salt are dispersed in the aqueous medium.Type: ApplicationFiled: September 14, 2018Publication date: August 27, 2020Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Junichi MIZUKAWA, Masafumi OKAMOTO, Norihiro SUGIHARA, Hiromasa MIYAZAKI
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Publication number: 20200190295Abstract: The polyisoprene-containing latex composition of the present it comprises the following components (a) and (b): (a) zinc ethylphenyldithiocarbarrote; and (b) 1-o-tolylbiguanide. Thus, a molded article of the latex composition has high tensile strength. Further, even after the latex composition is stored for a longer period of time than before, a decrease in the tensile strength of the obtained molded article is suppressed.Type: ApplicationFiled: August 20, 2018Publication date: June 18, 2020Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Kouhei SAWADA, Hiromasa MIYAZAKI, Norihiro SUGIHARA
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Patent number: 10196489Abstract: The present invention provides an aqueous dispersion of a polyester-containing elastic material, the aqueous dispersion comprising an aqueous medium, a non-ionic surface active agent and a polyester-containing elastic material, wherein the aqueous dispersion comprises 1 to 20 parts by mass of the non-ionic surface active agent relative to 100 parts by mass of the polyester-containing elastic material. The present invention also provides: a method for producing an aqueous dispersion of a polyester-containing elastic material; a molded article produced from the aqueous dispersion; and a method for producing a molded article.Type: GrantFiled: October 28, 2015Date of Patent: February 5, 2019Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Norihiro Sugihara, Hiromasa Miyazaki, Toshiaki Fujiwara, Hidetoshi Sakai, Yosuke Yamada
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Publication number: 20170342258Abstract: The present invention aims to provide an aqueous dispersion of ?-olefin-(meth)acrylic acid ester-based rubber particles having better storage stability and ensuring better oil resistance of a molded body. The present invention also aims to provide a method for producing the aqueous dispersion, a molded body and a resorcin-formalin-latex adhesive each produced using the aqueous dispersion. The present invention relates to an aqueous dispersion of ?-olefin-(meth)acrylic acid ester-based rubber particles including: an aqueous medium, a surfactant; and ?-olefin-(meth)acrylic acid ester-based rubber particles, the aqueous dispersion containing the surfactant in an amount of 1 to 15 parts by mass relative to 100 parts by mass of the ?-olefin-(meth)acrylic acid ester-based rubber particles.Type: ApplicationFiled: November 18, 2015Publication date: November 30, 2017Inventors: Hiromasa MIYAZAKI, Norihiro SUGIHARA, Kohei SAWADA
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Publication number: 20170321017Abstract: The present invention provides an aqueous dispersion of a polyester-type elastic material, the aqueous dispersion comprising an aqueous medium, a non-ionic surface active agent and a polyester-type elastic material, wherein the aqueous dispersion comprises 1 to 20 parts by mass of the non-ionic surface active agent relative to 100 parts by mass of the polyester-type elastic material. The present invention also provides: a method for producing an aqueous dispersion of a polyester-type elastic material; a molded article produced from the aqueous dispersion; and a method for producing a molded article.Type: ApplicationFiled: October 28, 2015Publication date: November 9, 2017Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Norihiro Sugihara, Hiromasa Miyazaki, Toshiaki Fujiwara, Hidetoshi Sakai, Yosuke Yamada
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Publication number: 20160355711Abstract: The present invention provides an epoxy resin adhesive that exhibits low shrinkage and excellent adhesiveness. The epoxy resin adhesive includes (A) an epoxy resin, (B) a curing agent, and (C) a particulate polyolefin-based resin having a volume average particle size of 1 to 25 ?m, wherein the particulate polyolefin-based resin is spherical, and wherein the particulate polyolefin-based resin is present in an amount of 1 to 50 parts by mass per 100 parts by mass of the epoxy resin.Type: ApplicationFiled: December 2, 2014Publication date: December 8, 2016Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Masafumi OKAMOTO, Norihiro SUGIHARA, Taiji MATSUKAWA
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Patent number: 9234097Abstract: An aqueous dispersion of polyamide rubber elastic body, which contains an aqueous medium and a polyamide rubber elastic body emulsified and dispersed in the aqueous medium in the presence of a surfactant. The surfactant is used in an amount of 1 to 20 parts by weight based on 100 parts by weight of the polyamide rubber elastic body, and is for example at least one member selected from the group consisting of a polyoxyalkylene alkyl ether sulfate, a dialkyl sulfosuccinate, a fatty acid salt and an ethylene oxide/propylene oxide copolymer. This aqueous dispersion can produce a molded article having the characteristics of the polyamide rubber elastic body, particularly a molded article which hardly suffers from bleeding of the surfactant and is excellent in transparency.Type: GrantFiled: February 5, 2013Date of Patent: January 12, 2016Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Norihiro Sugihara, Jun Sakata, Hirofumi Fujita
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Patent number: 8912264Abstract: It is an object of the present invention to provide an aqueous ethylene-vinyl alcohol-based copolymer dispersion which is excellent in long-term storage stability and in film-forming properties even when subjected to low-temperature or short-time drying or applied to give thick coats and can give coatings showing high gas barrier performance. The prevent invention is an aqueous ethylene/vinyl alcohol-based copolymer dispersion, which comprises: (A) an ethylene/vinyl alcohol-based copolymer with an ethylene content of 15-65 mole percent and a degree of saponification of not lower than 80 mole percent, (B) a base-neutralized ethylene/?,?-unsaturated carboxylic acid-based copolymer and (C) a polyvinyl alcohol with a degree of saponification of 75-100 mole percent and a degree of polymerization of 100-3500, the content of the polyvinyl alcohol (C) being 0.5-100 parts by weight per 100 parts by weight of the ethylene/vinyl alcohol-based copolymer (A).Type: GrantFiled: November 25, 2005Date of Patent: December 16, 2014Assignees: Sumitomo Seika Chemicals Co., Ltd., Kuraray Co., Ltd.Inventors: Yuhei Funabiki, Norihiro Sugihara, Kazutoshi Terada, Yukio Ozeki, Michiyuki Nanba
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Patent number: 8664313Abstract: The present invention provides a method of producing, in an industrially advantageous manner, an ethylene/vinyl alcohol copolymer aqueous dispersion which has a high concentration and is excellent in long-term storage stability and in which the resin particles in the aqueous dispersion obtained are small in particle diameter.Type: GrantFiled: May 13, 2005Date of Patent: March 4, 2014Assignee: Sumitomo Seika Chemicals Co., Ltd.Inventors: Norihiro Sugihara, Yuhei Funabiki
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Publication number: 20100234499Abstract: An aqueous dispersion of polyamide rubber elastic body, which contains an aqueous medium and a polyamide rubber elastic body emulsified and dispersed in the aqueous medium in the presence of a surfactant. The surfactant is used in an amount of 1 to 20 parts by weight based on 100 parts by weight of the polyamide rubber elastic body, and is for example at least one member selected from the group consisting of a polyoxyalkylene alkyl ether sulfate, a dialkyl sulfosuccinate, a fatty acid salt and an ethylene oxide/propylene oxide copolymer. This aqueous dispersion can produce a molded article having the characteristics of the polyamide rubber elastic body, particularly a molded article which hardly suffers from bleeding of the surfactant and is excellent in transparency.Type: ApplicationFiled: July 10, 2007Publication date: September 16, 2010Inventors: Norihiro Sugihara, Jun Sakata, Hirofumi Fujita
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Publication number: 20090149593Abstract: It is an object of the present invention to provide an aqueous ethylene-vinyl alcohol-based copolymer dispersion which is excellent in long-term storage stability and in film-forming properties even when subjected to low-temperature or short-time drying or applied to give thick coats and can give coatings showing high gas barrier performance. The prevent invention is an aqueous ethylene/vinyl alcohol-based copolymer dispersion, which comprises: (A) an ethylene/vinyl alcohol-based copolymer with an ethylene content of 15-65 mole percent and a degree of saponification of not lower than 80 mole percent, (B) a base-neutralized ethylene/?,?-unsaturated carboxylic acid-based copolymer and (C) a polyvinyl alcohol with a degree of saponification of 75-100 mole percent and a degree of polymerization of 100-3500, the content of the polyvinyl alcohol (C) being 0.5-100 parts by weight per 100 parts by weight of the ethylene/vinyl alcohol-based copolymer (A).Type: ApplicationFiled: November 25, 2005Publication date: June 11, 2009Applicants: SUMITOMO SEIKA CHEMICALS CO., LTD., KURARAY CO., LTD.Inventors: Yuhei Funabiki, Norihiro Sugihara, Kazutoshi Terada, Yukio Ozeki, Michiyuki Nanba
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Publication number: 20080176989Abstract: It is the object of the present invention to provide a method of producing, in an industrially advantageous manner, an ethylene/vinyl alcohol copolymer aqueous dispersion which has a high concentration and is excellent in long-term storage stability and in which the resin particles in the aqueous dispersion obtained are small in particle diameter.Type: ApplicationFiled: May 13, 2005Publication date: July 24, 2008Inventors: Norihiro Sugihara, Yuhei Funabiki
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Patent number: 6777488Abstract: The aqueous dispersion of polyamide resin of the present invention comprises dispersed polyamide resin particles, basic material and water. The dispersed polyamide resin particles have a weight-average diameter of 0.1-10 &mgr;m. The ratio of end carboxyl groups to end amino groups in the polyamide resin is between 60/40 and 100/0. The amount of said basic material added is 0.2-3.0 mol per mol of end carboxyl groups. Such an aqueous dispersion of polyamide resin can be manufactured by adding the polyamide resin to an aqueous dispersion medium containing 0.2-3.0 mol of basic material per mol of end carboxyl groups in the polyamide resin.Type: GrantFiled: October 19, 2001Date of Patent: August 17, 2004Assignee: Sumitomo Seika Chemicals Co., Ltd.Inventors: Eiichi Araki, Norihiro Sugihara, Kaichiro Nakao, Hiroshi Manabe
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Patent number: 6743741Abstract: A heat-fusion bonding adhesive is prepared by heating a thermoplastic resin to a temperature of no less than the softening temperature of the resin and then dispersing the resin in the softened state in an aqueous medium. Dispersing the thermoplastic resin in the aqueous medium is conducted, for example, by applying a shear force to the aqueous medium by stirring. In this case, stirring of the aqueous medium is preferably conducted till the thermoplastic resin is divided into particles with a weight-average particle size of 0.1-20 &mgr;m.Type: GrantFiled: January 11, 2002Date of Patent: June 1, 2004Assignee: Sumitomo Seika Chemicals Co., Ltd.Inventors: Eiichi Araki, Norihiro Sugihara, Kaichiro Nakao, Hiroshi Manabe, Tooru Takei
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Patent number: 6476093Abstract: There are disclosed a frost-coating composition, which comprises (i) a hydrophobic silica particle or further comprises (ii) a polymer particle, in addition to a photocurable compound; and a frosted glass container coated with such a composition. The frosted glass container coated with such a composition is excellent in alkali resistance, or excellent both in alkali resistance and in impact resistance.Type: GrantFiled: February 25, 2000Date of Patent: November 5, 2002Assignees: Sumitomo Seiki Chemicals Co., Ltd., Nihon Yamamura Glass Co., Ltd.Inventors: Eiichi Araki, Norihiro Sugihara, Hiroshi Manabe, Yoshikazu Kuroda, Motofumi Fukunami
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Patent number: 5554726Abstract: The object of this invention is to provide a method for producing a hydrogenated NBR latex with sufficiently reduced latex particle size and excellent standing stability without using any harmful solvent or restricting the kind of usable emulsifier.The method for producing hydrogenated NBR latex according to this invention comprises mixing an organic layer in which a hydrogenated NBR is dissolved in an organic solvent with an aqueous layer in which an emulsifier is dissolved in water, then agitating the mixture, and removing the organic solvent by distillation, characterized in that said emulsification is performed in the presence of an alcohol.Type: GrantFiled: July 16, 1995Date of Patent: September 10, 1996Assignee: Sumitomo Seika Chemicals Co., Ltd.Inventors: Eiichi Araki, Norihiro Sugihara, Mari Kamada, Taiji Matsukawa