Patents by Inventor Tatsuya Kanagawa
Tatsuya Kanagawa 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: 10239297Abstract: The present invention aims to provide a multi-layer sheet and a multi-layer film, each ensuring not only high transparency but also scratch resistance and being easy to print and thermoform. The above aim was achieved by a multi-layer sheet and a multi-layer film, each being a laminate which comprises a polycarbonate-based resin layer as a substrate and has a thermoplastic acrylic resin layer containing silicon dioxide particles as an outermost layer on one or both surfaces of the substrate, wherein the silicon dioxide particles have an average particle size of 0.1 to 2 ?m, and wherein the content of the silicon dioxide particles is 0.1% to 1% by weight, relative to the total weight of the thermoplastic acrylic resin layer.Type: GrantFiled: October 8, 2014Date of Patent: March 26, 2019Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Tatsuya Kanagawa, Toshinari Aoki, Youji Uehata, Tomohiro Ube
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Publication number: 20160250833Abstract: The present invention aims to provide a multi-layer sheet and a multi-layer film, each ensuring not only high transparency but also scratch resistance and being easy to print and thermoform. The above aim was achieved by a multi-layer sheet and a multi-layer film, each being a laminate which comprises a polycarbonate-based resin layer as a substrate and has a thermoplastic acrylic resin layer containing silicon dioxide particles as an outermost layer on one or both surfaces of the substrate, wherein the silicon dioxide particles have an average particle size of 0.1 to 2 ?m, and wherein the content of the silicon dioxide particles is 0.1% to 1% by weight, relative to the total weight of the thermoplastic acrylic resin layer.Type: ApplicationFiled: October 8, 2014Publication date: September 1, 2016Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Tatsuya KANAGAWA, Toshinari AOKI, Youj UEHATA, Tomohiro UBE
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Patent number: 9163157Abstract: The present invention relates to a multilayer laminated product which at least contains a layer formed of an acrylic resin composition containing an acrylic resin as a main component, and a specific terminally-modified polycarbonate resin. Moreover, the multilayer laminated product of the present invention has an excellent releasability and low frictional properties.Type: GrantFiled: May 7, 2013Date of Patent: October 20, 2015Assignees: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.Inventors: Masahiko Minemura, Noriyoshi Ogawa, Tatsuya Kanagawa
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Publication number: 20140242392Abstract: An acrylic resin composition containing an acrylic resin as a main component and a terminal-modified polycarbonate resin having terminal groups represented by the following formula (1): wherein each of R1 to R2 independently represents an alkylene group having 1-20 carbon atoms, each of R3 to R7 independently represents a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, an alkyl group having 1-9 carbon atoms, an aryl group having 6-12 carbon atoms, an alkenyl group having 2-5 carbon atoms, an alkoxy group having 1-5 carbon atoms or an aralkyl group having 7-17 carbon atoms, and “a” represents an integer of 1 to 1000.Type: ApplicationFiled: May 8, 2014Publication date: August 28, 2014Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC Filsheet Co., Ltd.Inventors: Noriyoshi OGAWA, Tatsuya KANAGAWA
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Publication number: 20120183780Abstract: An acrylic resin composition containing an acrylic resin as a main component and a terminal-modified polycarbonate resin having terminal groups represented by the following formula (1): wherein each of R1 to R2 independently represents an alkylene group having 1-20 carbon atoms, each of R3 to R7 independently represents a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, an alkyl group having 1-9 carbon atoms, an aryl group having 6-12 carbon atoms, an alkenyl group having 2-5 carbon atoms, an alkoxy group having 1-5 carbon atoms or an aralkyl group having 7-17 carbon atoms, and “a” represents an integer of 1 to 1000.Type: ApplicationFiled: March 26, 2012Publication date: July 19, 2012Inventors: Noriyoshi OGAWA, Tatsuya Kanagawa
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Publication number: 20110086227Abstract: Provided are an acrylic resin composition with which the peeling properties are improved when multi-layer sheets are formed and roll attachment is reduced, and an acrylic/polycarbonate multi-layer sheet having good environmental resistance and good producibility in which said composition is used. A terminally-modified polycarbonate resin (0.1 to 10 wt %) having terminal groups which can be represented by general formula (1): (where R1 represents an alkylene group, R2 to R8 represent hydrogen, an alkyl group, aryl group or the like, and a is an integer from 1 to 1000) is compounded with an acrylic resin to produce the acrylic resin composition, and this is molded into a multi-layer sheet by co-extrusion with polycarbonate resin.Type: ApplicationFiled: February 23, 2009Publication date: April 14, 2011Inventors: Masahiko Minemura, Noriyoshi Ogawa, Tatsuya Kanagawa
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Publication number: 20090304977Abstract: A polycarbonate resin which is reduced in the change of hygroscopic-expansion coefficient with changing environ-mental humidity, is inhibited from warping, and is suitable for use as an optical material is provided with excellent productivity. The polycarbonate resin is obtained by reacting an aromatic dihydric phenol compound (2,2-bis(4-hydroxyphenyl)propane, etc.), a compound forming a carbonic ester (phosgene, etc.), and a chain terminator represented by the following general formula (A) (dodecyl 4-hydroxybenzoate, etc.). [Chemical formula 1] (A) (In the formula (A), n is an integer of 10-20.Type: ApplicationFiled: May 16, 2007Publication date: December 10, 2009Inventors: Tatsuya Kanagawa, Kazuhiro Andou
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Publication number: 20090263663Abstract: An acrylic resin composition containing an acrylic resin as a main component and a terminal-modified polycarbonate resin having terminal groups represented by the following formula (1): wherein each of R1 to R2 independently represents an alkylene group having 1-20 carbon atoms, each of R3 to R7 independently represents a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, an alkyl group having 1-9 carbon atoms, an aryl group having 6-12 carbon atoms, an alkenyl group having 2-5 carbon atoms, an alkoxy group having 1-5 carbon atoms or an aralkyl group having 7-17 carbon atoms, and “a” represents an integer of 1 to 1000.Type: ApplicationFiled: April 10, 2009Publication date: October 22, 2009Inventors: Noriyoshi Ogawa, Tatsuya Kanagawa
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Patent number: 6630562Abstract: A polycarbonate resin obtained by reaction of (A) a bisphenol compound having a fluorene structure and (B) a compound having a polysiloxane structure with hydroxyphenyl group or (A) a bisphenol compound having a fluorene structure, (B) a compound having a polysiloxane structure with hydroxyphenyl group and (C) other specific bisphenol compound with a carbonic acid ester-forming compound, wherein an amount of (B) bisphenol compound is 10 to 50% by weight to total amount of (A) a bisphenol compound having a fluorene structure, (B) a compound having a polysiloxane structure with hydroxyphenyl group and (C) other specific bisphenol compound and an intrinsic viscosity of said polycarbonate resin is 0.2 to 2.0 dl/g.Type: GrantFiled: January 4, 2002Date of Patent: October 7, 2003Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Noriyoshi Ogawa, Tatsuya Kanagawa, Takahiro Adachi
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Patent number: 6576735Abstract: A polycarbonate resin obtainable by reaction of a carbonic acid ester-forming compound with bisphenols consisting essentially of 9,9-bis(4-hydroxy-3-methylphenyl) fluorene and a bisphenol compound(s) having a polysiloxane skeleton, an intrinsic viscosity of said polycarbonate resin being 0.2 to 2.0 dl/g.Type: GrantFiled: September 12, 2001Date of Patent: June 10, 2003Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Tatsuya Kanagawa, Noriyoshi Ogawa, Hidekazu Nakatani, Noriaki Honda, Mitsuhiko Masumoto
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Publication number: 20020132959Abstract: A polycarbonate resin obtained by reaction of (A) a bisphenol compound having a fluorene structure and (B) a compound having a polysiloxane structure with hydroxyphenyl group or (A) a bisphenol compound having a fluorene structure, (B) a compound having a polysiloxane structure with hydroxyphenyl group and (C) other specific bisphenol compound with a carbonic acid ester-forming compound, wherein an amount of (B) bisphenol compound is 10 to 50% by weight to total amount of (A) a bisphenol compound having a fluorene structure, (B) a compound having a polysiloxane structure with hydroxyphenyl group and (C) other specific bisphenol compound and an intrinsic viscosity of said polycarbonate resin is 0.2 to 2.0 dl/g.Type: ApplicationFiled: January 4, 2002Publication date: September 19, 2002Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Noriyoshi Ogawa, Tatsuya Kanagawa, Takahiro Adachi
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Publication number: 20020061997Abstract: A polycarbonate resin obtainable by reaction of a carbonic acid ester-forming compound with bisphenols consisting essentially of 9,9-bis (4-hydroxy-3-methylphenyl) fluorene and a bisphenol compound(s) having a polysiloxane skeleton, an intrinsic viscosity of said polycarbonate resin being 0.2 to 2.0 dl/g.Type: ApplicationFiled: September 12, 2001Publication date: May 23, 2002Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Tatsuya Kanagawa, Noriyoshi Ogawa, Hidekazu Nakatani, Noriaki Honda, Mitsuhiko Masumoto
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Patent number: 6340737Abstract: A polycarbonate resin obtained by reaction of (A) a bisphenol compound having a fluorene structure, (B) a bisphenol compound having a polysiloxane structure, (C) other specific bisphenol compound and a carbonic acid ester-forming compound, wherein an amount of (A) bisphenol compound is 30 to 80% by weight to total amount of (A) bisphenol compound and (B) bisphenol compound, and an amount of (C) bisphenol compound is 1 to 80% by weight to total amount of (A) bisphenol compound, (B) bisphenol compound and (C) bisphenol compound, and an intrinsic viscosity of said polycarbonate resin is 0.2 to 1.0 dl/g.Type: GrantFiled: March 29, 2001Date of Patent: January 22, 2002Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Noriyoshi Ogawa, Tatsuya Kanagawa, Hidekazu Nakatani
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Publication number: 20010039313Abstract: A polycarbonate resin obtained by reaction of (A) a bisphenol compound having a fluorene structure, (B) a bisphenol compound having a polysiloxane structure, (C) other specific bisphenol compound and a carbonic acid ester-forming compound, wherein an amount of (A) bisphenol compound is 30 to 80% by weight to total amount of (A) bisphenol compound and (B) bisphenol compound,and an amount of (C) bisphenol compound is 1 to 80% by weight to total amount of (A) bisphenol compound, (B) bisphenol compound and (C) bisphenol compound and an intrinsic viscosity of said polycarbonate resin is 0.2 to 1.0 dl/g.Type: ApplicationFiled: March 29, 2001Publication date: November 8, 2001Inventors: Noriyoshi Ogawa, Tatsuya Kanagawa, Hidekazu Nakatani