Patents by Inventor Katsushi Yamaoka
Katsushi Yamaoka 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: 20200062896Abstract: An object of the present invention is to provide a molded body that is easy to produce and obtained by foaming a polycarbonate copolymer containing, as a raw material, isosorbide that is lightweight and excellent in mechanical properties and like. The present invention relates to a foam-molded body containing a polycarbonate copolymer having a structural unit derived from a dihydroxy compound represented by the following formula (1): and a structural unit derived from other dihydroxy compounds, and having a glass transition temperature (Tg) of less than 145° C.Type: ApplicationFiled: October 30, 2019Publication date: February 27, 2020Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Toru Takashima, Katsushi Yamaoka, Takeshi Ishikawa
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Publication number: 20180371160Abstract: An object of the present invention is to provide a molded body that is easy to produce and obtained by foaming a polycarbonate copolymer containing, as a raw material, isosorbide that is lightweight and excellent in mechanical properties and like. The present invention relates to a foam-molded body containing a polycarbonate copolymer having a structural unit derived from a dihydroxy compound represented by the following formula (1): and a structural unit derived from other dihydroxy compounds, and having a glass transition temperature (Tg) of less than 145° C.Type: ApplicationFiled: February 28, 2014Publication date: December 27, 2018Applicant: Mitsubishi Chemical CorporationInventors: Toru TAKASHIMA, Katsushi YAMAOKA, Takeshi ISHIKAWA
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Patent number: 9193824Abstract: An object of the present invention is to provide a polycarbonate resin composition comprising a polycarbonate resin containing, as a raw material, isosorbide that is easy to produce and excellent in such as mechanical properties, etc., and a molded body, particularly a foam-molded body, composed of the resin composition. The present invention provides a foam-molded body of a resin composition containing a polycarbonate resin having at least a structural unit derived from a dihydroxy compound represented by the following formula (1): wherein the strain-hardening factor of uniaxial extensional viscosity of said resin composition is from 0.1 to 5.Type: GrantFiled: August 20, 2014Date of Patent: November 24, 2015Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Katsushi Yamaoka, Toru Takashima
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Publication number: 20140357748Abstract: An object of the present invention is to provide a polycarbonate resin composition comprising a polycarbonate resin containing, as a raw material, isosorbide that is easy to produce and excellent in such as mechanical properties, etc., and a molded body, particularly a foam-molded body, composed of the resin composition. The present invention provides a foam-molded body of a resin composition containing a polycarbonate resin having at least a structural unit derived from a dihydroxy compound represented by the following formula (1): wherein the strain-hardening factor of uniaxial extensional viscosity of said resin composition is from 0.1 to 5.Type: ApplicationFiled: August 20, 2014Publication date: December 4, 2014Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Katsushi YAMAOKA, Toru Takashima
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Publication number: 20140179818Abstract: An object of the present invention is to provide a molded body that is easy to produce and obtained by foaming a polycarbonate copolymer containing, as a raw material, isosorbide that is lightweight and excellent in mechanical properties and like. The present invention relates to a foam-molded body containing a polycarbonate copolymer having a structural unit derived from a dihydroxy compound represented by the following formula (1): and a structural unit derived from other dihydroxy compounds, and having a glass transition temperature (Tg) of less than 145° C.Type: ApplicationFiled: February 28, 2014Publication date: June 26, 2014Applicant: Mitsubishi Chemical CorporationInventors: Toru TAKASHIMA, Katsushi YAMAOKA, Takeshi ISHIKAWA
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Patent number: 8378057Abstract: To provide a polyether ester block copolymer which has surface hardness suitable to be applied to a structural member and excellent in sound deadening quality and tribological property, a polyether ester block copolymer of the present invention comprises (a) aromatic dicarboxylic acid unit, (b) 1,3-propanediol and/or 1,4-butanediol unit and (c) long chain diol unit mainly including polyoxytrimethylene glycol, wherein the durometer hardness (type D), measured according to the principle of the method described in JIS K6253, is 40 or larger and 78 or smaller.Type: GrantFiled: July 12, 2011Date of Patent: February 19, 2013Assignee: Mitsubishi Chemical CorporationInventor: Katsushi Yamaoka
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Publication number: 20110288264Abstract: To provide a polyether ester block copolymer which has surface hardness suitable to be applied to a structural member and excellent in sound deadening quality and tribological property, a polyether ester block copolymer of the present invention comprises (a) aromatic dicarboxylic acid unit, (b) 1,3-propanediol and/or 1,4-butanediol unit and (c) long chain diol unit mainly including polyoxytrimethylene glycol, wherein the durometer hardness (type D), measured according to the principle of the method described in JIS K6253, is 40 or larger and 78 or smaller.Type: ApplicationFiled: July 12, 2011Publication date: November 24, 2011Applicant: MITSUBISHI CHEMICAL CORPORATIONInventor: Katsushi YAMAOKA
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Publication number: 20100099830Abstract: In order to provide a resin composition with a well-balanced properties such as thermal resistance, moldability, flexibility and others through the use of a polyhydroxycarboxylic-acid-based resin, the resin composition contains at least a polyhydroxycarboxylic-acid-based resin comprising a structural unit represented by Formula (1) as a main structural unit; and a polyoxytrimethyleneglycol-based resin comprising a structural unit represented by Formula (2) as a main structural unit —R1—COO—??(1) (where, R1 in Formula (1) represents a divalent aliphatic hydrocarbon group)Type: ApplicationFiled: January 16, 2008Publication date: April 22, 2010Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Tomohide Yoshida, Katsushi Yamaoka
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Publication number: 20090072184Abstract: To provide a polyether ester block copolymer which has surface hardness suitable to be applied to a structural member and excellent in sound deadening quality and tribological property, a polyether ester block copolymer of the present invention comprises (a) aromatic dicarboxylic acid unit, (b) 1,3-propanediol and/or 1,4-butanediol unit and (c) long chain diol unit mainly including polyoxytrimethylene glycol, wherein the durometer hardness (type D), measured according to the principle of the method described in JIS K6253, is 40 or larger and 78 or smaller.Type: ApplicationFiled: April 14, 2006Publication date: March 19, 2009Applicant: MITSUBISHI CHEMICAL CORPORATIONInventor: Katsushi Yamaoka
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Publication number: 20060172097Abstract: There are provided an endless belt for image-forming apparatuses comprising a molded product produced from a blended mixture containing a thermoplastic elastomer, a thermoplastic resin and a conductive substance, the said endless belt having properties satisfying the following formulae (1), (2) and (3): SR(100V)/SR(500V)<VR(100V)/VR(250)??(1) SR(100V)/SR(500V)?30??(2) 8?VR(100V)/VR(250V)?100??(3) wherein SR(100V) represents a surface resistivity as measured by applying a voltage of 100V to the endless belt for 10 sec, SR(500V) represents a surface resistivity as measured by applying a voltage of 500V to the endless belt for 10 sec, VR(100V) represents a volume resistivity as measured by applying a voltage of 100V to the endless belt for 10 sec, and VR(250V) represents a volume resistivity as measured by applying a voltage of 250V to the endless belt for 10 sec.Type: ApplicationFiled: January 18, 2006Publication date: August 3, 2006Applicant: Mitsubishi Chemical CorporationInventors: Makoto Morikoshi, Toshihiro Otsu, Katsushi Yamaoka, Kazuya Mizumoto