Patents by Inventor Hiroyuki Isago
Hiroyuki Isago 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: 11174388Abstract: A polyphenylene sulfide resin composition exhibits excellent initial toughness and toughness after a long-term high temperature treatment typified by a tensile elongation at break after a dry heat treatment without impairing mechanical strength, chemical resistance and electrical insulation properties. The polyphenylene sulfide resin composition includes 0.01 to 10 parts by weight of an organosilane compound and 0.01 to 5 parts by weight of a metal salt of phosphorus oxoacid based on 100 parts by weight of a polyphenylene sulfide resin, and a tensile elongation at break, which is measured in accordance with ASTM-D638 under the conditions of a tensile speed of 10 mm/min and an ambient temperature of 23° C. after treating at 200° C. for 500 hours using an ASTM No. 4 dumbbell test piece obtained by injection molding the composition, is 10% or more.Type: GrantFiled: February 15, 2018Date of Patent: November 16, 2021Assignee: Toray Industries, Inc.Inventors: Tomoya Yoshida, Hiroyuki Isago, Takeshi Unohara, Hideki Matsumoto
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Patent number: 10889714Abstract: A polyphenylene sulfide resin composition is obtained by mixing a polyphenylene sulfide resin (a), a fluororesin (b) and an organosilane compound (c). When a resin phase-separated structure of a molded product formed from the polyphenylene sulfide resin composition is observed by an electron microscope, the component (a) forms a continuous phase, the component (b) forms a primary dispersed phase having a number-average dispersion diameter of not greater than 1 ?m, and a secondary dispersed phase of the component (a) is included in the primary dispersed phase of the component (b).Type: GrantFiled: January 25, 2017Date of Patent: January 12, 2021Assignee: Toray Industries, Inc.Inventors: Hiroyuki Isago, Tomoya Yoshida, Kei Saitoh
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Patent number: 10577501Abstract: A polyphenylene sulfide resin composition includes a polyphenylene sulfide resin (A), an amino group-containing compound (B), an epoxy group-containing elastomer (C), wherein the polyphenylene sulfide resin (A) forms a continuous phase and the amino group-containing compound (B) and the epoxy group-containing elastomer (C) form a dispersed phase in the morphology of a forming product composed of the resin composition observed with a transmission electron microscope, and the modulus of elongation (the elastic modulus determined by performing a tensile test on an ASTM type 1 dumbbell test piece obtained by injection molding at a cylinder temperature of 300° C. and at a mold temperature of 150° C., under the conditions in which the distance between chucks is 114 mm, the test piece distance is 100 mm, and the elongation rate is 10 mm/min) of the resin composition is 1.0 MPa or more and 1000 MPa or less.Type: GrantFiled: June 23, 2017Date of Patent: March 3, 2020Assignee: Toray Industries, Inc.Inventors: Yuji Yamanaka, Kei Saito, Hiroyuki Isago, Takeshi Unohara, Hideki Matsumoto
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Publication number: 20190367730Abstract: A polyphenylene sulfide resin composition exhibits excellent initial toughness and toughness after a long-term high temperature treatment typified by a tensile elongation at break after a dry heat treatment without impairing mechanical strength, chemical resistance and electrical insulation properties. The polyphenylene sulfide resin composition includes 0.01 to 10 parts by weight of an organosilane compound and 0.01 to 5 parts by weight of a metal salt of phosphorus oxoacid based on 100 parts by weight of a polyphenylene sulfide resin, and a tensile elongation at break, which is measured in accordance with ASTM-D638 under the conditions of a tensile speed of 10 mm/min and an ambient temperature of 23° C. after treating at 200° C. for 500 hours using an ASTM No. 4 dumbbell test piece obtained by injection molding the composition, is 10% or more.Type: ApplicationFiled: February 15, 2018Publication date: December 5, 2019Inventors: Tomoya Yoshida, Hiroyuki Isago, Takeshi Unohara, Hideki Matsumoto
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Publication number: 20190330470Abstract: A polyphenylene sulfide resin composition includes a polyphenylene sulfide resin (A), an amino group-containing compound (B), an epoxy group-containing elastomer (C), wherein the polyphenylene sulfide resin (A) forms a continuous phase and the amino group-containing compound (B) and the epoxy group-containing elastomer (C) form a dispersed phase in the morphology of a forming product composed of the resin composition observed with a transmission electron microscope, and the modulus of elongation (the elastic modulus determined by performing a tensile test on an ASTM type 1 dumbbell test piece obtained by injection molding at a cylinder temperature of 300° C. and at a mold temperature of 150° C., under the conditions in which the distance between chucks is 114 mm, the test piece distance is 100 mm, and the elongation rate is 10 mm/min) of the resin composition is 1.0 MPa or more and 1000 MPa or less.Type: ApplicationFiled: June 23, 2017Publication date: October 31, 2019Inventors: Yuji Yamanaka, Kei Saito, Hiroyuki Isago, Takeshi Unohara, Hideki Matsumoto
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Publication number: 20190040256Abstract: A polyphenylene sulfide resin composition is obtained by mixing a polyphenylene sulfide resin (a), a fluororesin (b) and an organosilane compound (c). When a resin phase-separated structure of a molded product formed from the polyphenylene sulfide resin composition is observed by an electron microscope, the component (a) forms a continuous phase, the component (b) forms a primary dispersed phase having a number-average dispersion diameter of not greater than 1 ?m, and a secondary dispersed phase of the component (a) is included in the primary dispersed phase of the component (b).Type: ApplicationFiled: January 25, 2017Publication date: February 7, 2019Inventors: Hiroyuki Isago, Tomoya Yoshida, Kei Saitoh
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Patent number: 9840596Abstract: A polyphenylene sulfide block copolymer contains polyphenylene sulfide units and polyorganosiloxane units and has a glass-transition temperature in the range of 80° C. or lower and a weight-average molecular weight in the range of 35,000 to 100,000. The polyphenylene sulfide block copolymer has high flexibility as well as high heat resistance and heat aging resistance.Type: GrantFiled: March 24, 2015Date of Patent: December 12, 2017Assignee: Toray Industries Inc.Inventors: Yuji Yamanaka, Hiroyuki Isago, Kei Saito, Hideki Matsumoto
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Publication number: 20170145165Abstract: A polyphenylene sulfide block copolymer contains polyphenylene sulfide units and poly-organosiloxane units and has a glass-transition temperature in the range of 80° C. or lower and a weight-average molecular weight in the range of 35,000 to 100,000. The polyphenylene sulfide block copolymer has high flexibility as well as high heat resistance and heat aging resistance.Type: ApplicationFiled: March 24, 2015Publication date: May 25, 2017Inventors: Yuji Yamanaka, Hiroyuki Isago, Kei Saito, Hideki Matsumoto
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Patent number: 9441109Abstract: The invention provides a PPS resin composition having excellent heat resistance and excellent electrical properties without damaging excellent physical properties including mechanical properties and low gas generation which PPS intrinsically has. There is provided a resin composition comprising (a) a polyphenylene sulfide resin and (b) one or more copolymers selected among a tetrafluoroethylene/hexafluoropropylene copolymer, an ethylene/tetrafluoroethylene copolymer and a tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer. In the resin composition, (a) the polyphenylene sulfide resin forms a continuous phase, (b) one copolymer selected among the above components forms primary dispersed phases, and the primary dispersed phase includes secondary dispersed phases formed by a component different from the component of the primary dispersed phase.Type: GrantFiled: January 21, 2014Date of Patent: September 13, 2016Assignee: TORAY INDUSTRIES, INC.Inventors: Hiroyuki Isago, Kei Saitoh, Hideki Matsumoto
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Publication number: 20150361265Abstract: The invention provides a PPS resin composition having excellent heat resistance and excellent electrical properties without damaging excellent physical properties including mechanical properties and low gas generation which PPS intrinsically has. There is provided a resin composition comprising (a) a polyphenylene sulfide resin and (b) one or more copolymers selected among a tetrafluoroethylene/hexafluoropropylene copolymer, an ethylene/tetrafluoroethylene copolymer and a tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer. In the resin composition, (a) the polyphenylene sulfide resin forms a continuous phase, (b) one copolymer selected among the above components forms primary dispersed phases, and the primary dispersed phase includes secondary dispersed phases formed by a component different from the component of the primary dispersed phase.Type: ApplicationFiled: January 21, 2014Publication date: December 17, 2015Applicant: Toray Industries, Inc.Inventors: Hiroyuki Isago, Kei Saitoh, hideki Matsumoto
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Patent number: 9068078Abstract: There is provided a polyphenylene sulfide (PPS) resin composition, comprising: 5 to 50 parts by weight of a polyamide resin (b) and 50 to 250 parts by weight of a metal hydroxide (c) relative to 100 parts by weight of a polyphenylene sulfide resin (a), wherein the metal hydroxide is dispersed in the composition at an average secondary particle diameter equal to or less than 5 ?m. The PPS resin composition may provide excellent tracking resistance without significantly damaging various intrinsic properties of a PPS resin, such as excellent mechanical strength and low gas generation.Type: GrantFiled: September 27, 2012Date of Patent: June 30, 2015Assignee: TORAY INDUSTRIES, INC.Inventors: Hiroyuki Isago, Kei Saitoh, Hideki Matsumoto, Yoshiomi Horiguchi, Atsushi Ishio
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Publication number: 20140256864Abstract: There is provided a polyphenylene sulfide (PPS) resin composition, comprising: 5 to 50 parts by weight of a polyamide resin (b) and 50 to 250 parts by weight of a metal hydroxide (c) relative to 100 parts by weight of a polyphenylene sulfide resin (a), wherein the metal hydroxide is dispersed in the composition at an average secondary particle diameter equal to or less than 5 ?m. The PPS resin composition may provide excellent tracking resistance without significantly damaging various intrinsic properties of a PPS resin, such as excellent mechanical strength and low gas generation.Type: ApplicationFiled: September 27, 2012Publication date: September 11, 2014Applicant: TORAY INDUSTRIES, INC.Inventors: Hiroyuki Isago, Kei Saitoh, Hideki Matsumoto, Yoshiomi Horiguchi, Atsushi Ishio
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Patent number: 8546518Abstract: A method is provided for producing a polyarylene sulfide by reacting a sulfidizing agent with a dihalogenated aromatic compound in an organic polar solvent in the presence of an alkali metal hydroxide, the method includes <Step 1>: carrying out the reaction in such a manner that the polymerization time in a temperature range of 230° C. to less than 245° C. (T1a) is not less than 30 minutes and less than 3.5 hours and that the conversion ratio of the dihalogenated aromatic compound at the end of the step is 70 to 98 mol. % and <Step 2>: carrying out the reaction in such a manner that the polymerization time in a temperature range of 245° C. to less than 280° C. (T2) is not less than 5 minutes and less than 1 hour.Type: GrantFiled: August 26, 2010Date of Patent: October 1, 2013Assignee: Toray Industries, Inc.Inventors: Takeshi Unohara, Hiroyuki Isago, Toru Nishimura, Masahiro Inohara
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Publication number: 20120178898Abstract: A method is provided for producing a polyarylene sulfide by reacting a sulfidizing agent with a dihalogenated aromatic compound in an organic polar solvent in the presence of an alkali metal hydroxide, the method includes <Step 1>: carrying out the reaction in such a manner that the polymerization time in a temperature range of 230° C. to less than 245° C. (T1a) is not less than 30 minutes and less than 3.5 hours and that the conversion ratio of the dihalogenated aromatic compound at the end of the step is 70 to 98 mol. % and <Step 2>: carrying out the reaction in such a manner that the polymerization time in a temperature range of 245° C. to less than 280° C. (T2) is not less than 5 minutes and less than 1 hour.Type: ApplicationFiled: August 26, 2010Publication date: July 12, 2012Applicant: Toray Industries, Inc.Inventors: Takeshi Unohara, Hiroyuki Isago, Toru Nishimura, Masahiro Inohara