Patents by Inventor Masahiro Osuka
Masahiro Osuka 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: 9969146Abstract: Provided are a layered substrate that has excellent mechanical properties such as a flexural strength or a flexural modulus applicable to a structural material, the variations in those mechanical properties are small, exhibits excellent formability into a complicated shape, and is able to be molded in a short time, and a method for manufacturing the same. A layered substrate fabricated by layering plural sheets of sheet-shaped prepregs containing a reinforcing fiber oriented in one direction and a thermoplastic matrix resin, wherein the prepreg has a slit penetrating from the front surface to the back surface, each slit is provided so as to intersect with each reinforcing fiber only one time.Type: GrantFiled: March 10, 2014Date of Patent: May 15, 2018Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Takeshi Ishikawa, Masao Tomioka, Masahiro Osuka, Yuuji Fujita, Yukichi Konami, Takahiro Hayashi
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Publication number: 20160016382Abstract: Provided are a layered substrate that has excellent mechanical properties such as a flexural strength or a flexural modulus applicable to a structural material, the variations in those mechanical properties are small, exhibits excellent formability into a complicated shape, and is able to be molded in a short time, and a method for manufacturing the same. A layered substrate fabricated by layering plural sheets of sheet-shaped prepregs containing a reinforcing fiber oriented in one direction and a thermoplastic matrix resin, wherein the prepreg has a slit penetrating from the front surface to the back surface, each slit is provided so as to intersect with each reinforcing fiber only one time.Type: ApplicationFiled: March 10, 2014Publication date: January 21, 2016Applicant: MITSUBISHI RAYON CO., LTD.Inventors: Takeshi ISHIKAWA, Masao TOMIOKA, Masahiro OSUKA, Yuuji FUJITA, Yokichi KONAMI, Takahiro HAYASHI
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Patent number: 9206310Abstract: A modifier for resin has an average particle size of 20 ?m or more, wherein particles having an average particle size of 10 ?m or less account for less than 30% by mass of the modifier, and particles having an average particle size of 10 ?m or less account for 30% by mass or more of the modifier after irradiating the modifier with ultrasonic wave of 40 W for 5 minutes. Also a resin composition comprises 1 to 40% by mass of the modifier for resin and 99 to 60% by mass (the total amount of both components is 100% by mass) of a thermoplastic resin or a curable resin, and a molded article is produced by molding the same.Type: GrantFiled: March 19, 2014Date of Patent: December 8, 2015Assignee: MITSUBISHI RAYON CO., LTD.Inventors: Tsuneki Wakita, Keiji Nakamura, Hideaki Makino, Masahiro Osuka, Yohei Miwa, Yasutaka Doi
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Publication number: 20140206817Abstract: A modifier for resin has an average particle size of 20 ?m or more, wherein particles having an average particle size of 10 ?m or less account for less than 30% by mass of the modifier, and particles having an average particle size of 10 ?m or less account for 30% by mass or more of the modifier after irradiating the modifier with ultrasonic wave of 40 W for 5 minutes. Also a resin composition comprises 1 to 40% by mass of the modifier for resin and 99 to 60% by mass (the total amount of both components is 100% by mass) of a thermoplastic resin or a curable resin, and a molded article is produced by molding the same.Type: ApplicationFiled: March 19, 2014Publication date: July 24, 2014Applicant: MITSUBISHI RAYON CO., LTD.Inventors: Tsuneki WAKITA, Keiji Nakamura, Hideaki Makino, Masahiro Osuka, Yohei Miwa, Yasutaka Doi
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Patent number: 7671129Abstract: The present invention provides a thermoplastic resin composition capable of demonstrating impact strength, and high resistance to hydrolysis and heat discoloration without impairing the essential properties of the thermoplastic resin. The present invention provides a thermoplastic resin composition containing: 70 to 99% by mass of thermoplastic resin (A) containing a polycarbonate resin as an essential component; and 1 to 30% by mass of graft copolymer (B) which is a graft copolymer obtained by emulsion graft polymerization of a monomer or monomer mixture containing at least alkyl methacrylate in the presence of a latex containing a butadiene rubber polymer, wherein the amount of the butadiene rubber polymer included is in the range of 55 to 90% by mass, and the graft copolymer (B) is obtained by using 0.05 to 10 parts by mass of sodium alkylphenylether disulfonate with respect to 100 parts by mass of the graft copolymer (B).Type: GrantFiled: March 9, 2004Date of Patent: March 2, 2010Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Takashi Miura, Keiji Nakamura, Mari Sekita, Masahiro Osuka
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Patent number: 7589151Abstract: A thermoplastic resin composition comprising a polylactic acid polymer (A), an acrylic polymer (B) containing units of methyl methacrylate monomer, and a graft copolymer (C) obtained by graft-polymerizing a vinyl monomer onto a rubbery polymer, wherein the refractive index, Rc, of the graft copolymer (C) and the total refractive index, Rab, of the polylactic acid polymer (A) and the acrylic polymer (B) satisfy the following formula (1) ?0.004?Rc?Rab?+0.008??(1).Type: GrantFiled: March 4, 2005Date of Patent: September 15, 2009Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Hideo Aoki, Masakazu Ito, Takashi Miura, Masahiro Osuka
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Patent number: 7317043Abstract: There is disclosed an impact modifier which comprises a graft copolymer comprising a rubber polymer (A) obtained from a mixture of one or more kinds of (meth)acrylic monomers as major ingredients, having a glass transfer temperature of 0° C. or lower, and forming particles having each of 80 wt % or more of them has a particle diameter within the range of 400 to 1,000 nm as determined from a particle diameter distribution on a weight basis, and branches (B) grafted thereto obtained from one or more kinds of vinyl monomers; a process for producing thereof; and a thermoplastic resin composition containing the impact modifier.Type: GrantFiled: February 26, 2003Date of Patent: January 8, 2008Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Keiji Nakamura, Kimihiko Hattori, Masahiro Osuka
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Publication number: 20070276090Abstract: A thermoplastic resin composition comprising a polylactic acid polymer (A), an acrylic polymer (B) containing units of methyl methacrylate monomer, and a graft copolymer (C) obtained by graft-polymerizing a vinyl monomer onto a rubbery polymer, wherein the refractive index, Rc, of the graft copolymer (C) and the total refractive index, Rab, of the polylactic acid polymer (A) and the acrylic polymer (B) satisfy the following formula (1). ?0.004??Rc?Rab?+0.Type: ApplicationFiled: March 4, 2005Publication date: November 29, 2007Applicant: Mitsubishi Rayon Co, Ltd.Inventors: Hideo Aoki, Masakazu Ito, Takashi Miura, Masahiro Osuka
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Publication number: 20070191542Abstract: A modifier for resin has an average particle size of 20 ?m or more, wherein particles having an average particle size of 10 ?m or less account for less than 30% by mass of the modifier, and particles having an average particle size of 10 ?m or less account for 30% by mass or more of the modifier after irradiating the modifier with ultrasonic wave of 40 W for 5 minutes. Also a resin composition comprises 1 to 40% by mass of the modifier for resin and 99 to 60% by mass (the total amount of both components is 100% by mass) of a thermoplastic resin or a curable resin, and a molded article is produced by molding the same.Type: ApplicationFiled: February 15, 2005Publication date: August 16, 2007Inventors: Tsuneki Wakita, Keiji Nakamura, Hideaki Makino, Masahiro Osuka, Yohei Miwa, Yasutaka Doi
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Publication number: 20060217496Abstract: The present invention provides a thermoplastic resin composition capable of demonstrating impact strength, and high resistance to hydrolysis and heat discoloration without impairing the essential properties of the thermoplastic resin. The present invention provides a thermoplastic resin composition containing: 70 to 99% by mass of thermoplastic resin (A) containing a polycarbonate resin as an essential component; and 1 to 30% by mass of graft copolymer (B) which is a graft copolymer obtained by emulsion graft polymerization of a monomer or monomer mixture containing at least alkyl methacrylate in the presence of a latex containing a butadiene rubber polymer, wherein the amount of the butadiene rubber polymer included is in the range of 55 to 90% by mass, and the graft copolymer (B) is obtained by using 0.05 to 10 parts by mass of sodium alkylphenylether disulfonate with respect to 100 parts by mass of the graft copolymer (B).Type: ApplicationFiled: March 9, 2004Publication date: September 28, 2006Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Takashi Miura, Keiji Nakamura, Mari Sekita, Masahiro Osuka
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Patent number: 7029750Abstract: The present invention provides a thermoplastic resin composition comprising a thermoplastic resin (A), an acrylic polymer (B), a polytetrafluoroethylene-containing powder mixture (C) and a filler (D), the amount of the acrylic polymer (B) being from 0.1 to 400 parts by weight, the amount of the filler (D) being from 1 to 2000 parts by weight, based on 100 parts by weight of the thermoplastic resin (A), and the amount of a polytetrafluoroethylene component in the polytetrafluoroethylene-containing powder mixture (C) is from 0.01 to 400 parts by weight based on 100 parts by weight of the thermoplastic resin (A).Type: GrantFiled: July 14, 2003Date of Patent: April 18, 2006Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Seiji Takei, Masahiro Osuka, Hideo Aoki, Mari Sekita, Masaaki Mouri
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Publication number: 20050239949Abstract: There is disclosed an impact modifier which comprises a graft copolymer comprising a rubber polymer (A) obtained from a mixture of one or more kinds of (meth)acrylic monomers as major ingredients, having a glass transfer temperature of 0° C. or lower, and forming particles having each of 80 wt % or more of them has a particle diameter within the range of 400 to 1,000 nm as determined from a particle diameter distribution on a weight basis, and branches (B) grafted thereto obtained from one or more kinds of vinyl monomers; a process for producing thereof; and a thermoplastic resin composition containing the impact modifier.Type: ApplicationFiled: February 26, 2003Publication date: October 27, 2005Applicant: Mitsubishi Rayon co., Ltd.Inventors: Keiji Nakamura, Kimihiko Hattori, Masahiro Osuka
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Publication number: 20050014003Abstract: The present invention provides a thermoplastic resin composition comprising a thermoplastic resin (A), an acrylic polymer (B), a polytetrafluoroethylene-containing powder mixture (C) and a filler (D), the amount of the acrylic polymer (B) being from 0.1 to 400 parts by weight, the amount of the filler (D) being from 1 to 2000 parts by weight, based on 100 parts by weight of the thermoplastic resin (A), and the amount of a polytetrafluoroethylene component in the polytetrafluoroethylene-containing powder mixture (C) is from 0.01 to 400 parts by weight based on 100 parts by weight of the thermoplastic resin (A).Type: ApplicationFiled: July 14, 2003Publication date: January 20, 2005Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Seiji Takei, Masahiro Osuka, Hideo Aoki, Mari Sekita, Masaaki Mouri
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Patent number: 5847050Abstract: A method for particles agglomeration and enlargement of a diene type polymer rubber latex, which comprises subjecting a diene type polymer rubber latex produced by emulsion polymerization, to particles agglomeration and enlargement to obtain a particles-enlarged diene type polymer rubber latex (A), wherein the particles enlargement is allowed to take place by agglomeration based mainly on Brownian coagulation; a graft copolymer (B) of a particles-enlarged diene type polymer rubber latex (A) obtained by the above method; and a thermoplastic resin composition comprising said graft copolymer (B).Type: GrantFiled: March 3, 1997Date of Patent: December 8, 1998Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Akihiro Toritani, Koichi Shishido, Masahiro Osuka, Akira Nakata
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Patent number: 5349017Abstract: A polyvinyl chloride resin composition comprising (i) 100 parts by weight of a polyvinyl chloride resin and (ii) 2 to 40 parts by weight of a multi-stage copolymer obtained by polymerizing resin component formable monomers in the range of from more than 30 parts by weight to 50 parts by weight in three stages onto 50-70 parts by weight of a butadiene elastomer having a glass transition temperature ranging from -40.degree. C. to 5.degree. C. obtained by a copolymerization of a monomer mixture of 70 to 90% by weight of butadiene, 10 to 30 percent by weight of an aromatic vinyl monomer and a polyfunctional monomer added in an amount corresponding to 3 to 10 parts by weight per 100 parts by weight of the total amount of the butadiene and aromatic vinyl monomer.Type: GrantFiled: December 1, 1992Date of Patent: September 20, 1994Assignee: Mitsubishi Rayon Company Ltd.Inventors: Koji Matsumoto, Masaru Morimoto, Masahiro Osuka, Naomi Uno