Patents by Inventor Yuusuke Nii

Yuusuke Nii 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).

  • Patent number: 11370883
    Abstract: A polycarbonate resin composition, a molded article, a polycarbonate resin, and an end-capping agent for polycarbonate resins are provided. The polycarbonate resin composition contains: a polycarbonate resin having a terminal structure represented by Formula (A) and having a viscosity average molecular weight from 1×104 to 5×104, and a stabilizer. In Formula (A), R1 is selected from the group consisting of a hydrogen atom, halogen atoms, linear alkyl groups having from 1 to 9 carbons, branched alkyl groups having from 3 to 9 carbons, linear alkenyl groups having from 2 to 9 carbons, branched alkenyl groups having from 3 to 9 carbons, and aryl groups having from 6 to 12 carbons; and R2 to R7 are each independently selected from the group consisting of a hydrogen atom, alkyl groups having from 1 to 9 carbons, and alkoxy groups having from 1 to 9 carbons.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: June 28, 2022
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yuji Shibasaki, Hiroyoshi Maruyama, Kimitaka Nakao, Yuusuke Nii
  • Patent number: 10717814
    Abstract: The purpose of the present invention is to provide a polycarbonate resin which has high fluidity and with which mold fouling such as mold deposits, etc., can be reduced. The polycarbonate resin according to the present invention has a terminal structure represented by general formula (1), and a viscosity-average molecular weight of 10,000-18,000, wherein the contained amount of low-molecular-weight carbonate compounds having a molecular weight of 1,000 or less contained in the polycarbonate resin is less than 1 mass %.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: July 21, 2020
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yuusuke Nii, Shun Ishikawa
  • Publication number: 20200115496
    Abstract: A polycarbonate resin composition, a molded article, a polycarbonate resin, and an end-capping agent for polycarbonate resins are provided. The polycarbonate resin composition contains: a polycarbonate resin having a terminal structure represented by Formula (A) and having a viscosity average molecular weight from 1×104 to 5×104, and a stabilizer. In Formula (A), R1 is selected from the group consisting of a hydrogen atom, halogen atoms, linear alkyl groups having from 1 to 9 carbons, branched alkyl groups having from 3 to 9 carbons, linear alkenyl groups having from 2 to 9 carbons, branched alkenyl groups having from 3 to 9 carbons, and aryl groups having from 6 to 12 carbons; and R2 to R7 are each independently selected from the group consisting of a hydrogen atom, alkyl groups having from 1 to 9 carbons, and alkoxy groups having from 1 to 9 carbons.
    Type: Application
    Filed: April 16, 2018
    Publication date: April 16, 2020
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yuji SHIBASAKI, Hiroyoshi MARUYAMA, Kimitaka NAKAO, Yuusuke NII
  • Patent number: 10287394
    Abstract: The present invention can provide an injection-molded body for a vehicle, the injection-molded body having a terminal structure that is indicated by general formula (1) and containing a polycarbonate resin that has a viscosity-average molecular weight of 18,000-24,000.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: May 14, 2019
    Assignee: MITSUBUSHU GAS CHEMICAL COMPANY, INC.
    Inventors: Yuusuke Nii, Noriyoshi Ogawa
  • Publication number: 20190023840
    Abstract: The purpose of the present invention is to provide a polycarbonate resin which has high fluidity and with which mold fouling such as mold deposits, etc., can be reduced. The polycarbonate resin according to the present invention has a terminal structure represented by general formula (1), and a viscosity-average molecular weight of 10,000-18,000, wherein the contained amount of low-molecular-weight carbonate compounds having a molecular weight of 1,000 or less contained in the polycarbonate resin is less than 1 mass %.
    Type: Application
    Filed: February 21, 2017
    Publication date: January 24, 2019
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yuusuke NII, Shun ISHIKAWA
  • Publication number: 20190010279
    Abstract: The present invention provides a polycarbonate resin having a terminal structure derived from a monovalent phenol represented by general formula (1), and a constitutional unit derived from a divalent phenol, wherein the specific alcohol content is 500 ppm or less.
    Type: Application
    Filed: September 13, 2016
    Publication date: January 10, 2019
    Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Genki SUGIYAMA, Hidetaka SHIMIZU, Yasuyoshi NAKAYASU, Ken OGASAWARA, Hiroshi NAKASEKO, Yuusuke NII
  • Publication number: 20180079861
    Abstract: The present invention can provide an injection-molded body for a vehicle, the injection-molded body having a terminal structure that is indicated by general formula (1) and containing a polycarbonate resin that has a viscosity-average molecular weight of 18,000-24,000.
    Type: Application
    Filed: March 28, 2016
    Publication date: March 22, 2018
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yuusuke NII, Noriyoshi OGAWA
  • Patent number: 9534115
    Abstract: A resin composition is provided which is excellent in impact resistance, heat resistance, moldability, and chemical resistance and which is suitable, for example, as a molding material for a portable terminal housing. An aromatic polycarbonate composite resin composition contains, with respect to 100 parts by mass of a resin component formed of 60 to 90 parts by mass of an aromatic polycarbonate resin (A) and 10 to 40 parts by mass of a polyester resin (B), 3 to 20 parts by mass of a graft copolymer (C) formed by graft polymerization of a (meth)acrylic acid ester compound with a diene-based rubber and 0.005 to 0.1 parts by mass of a stabilizer (D). The graft copolymer (C) has a sulfur content of 100 to 1,500 ppm and an average particle diameter of 70 to 240 nm, and the stabilizer (D) is an organic phosphate compound represented by the following general formula (I). O?P(OH)m(OR)3-m??(I) R represents an alkyl group or an aryl group. m represents 0 to 2.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 3, 2017
    Assignee: Mitsubishi Engineering-Plastics Corporation
    Inventor: Yuusuke Nii
  • Publication number: 20150079324
    Abstract: A resin composition is provided which is excellent in impact resistance, heat resistance, moldability, and chemical resistance and which is suitable, for example, as a molding material for a portable terminal housing. An aromatic polycarbonate composite resin composition contains, with respect to 100 parts by mass of a resin component formed of 60 to 90 parts by mass of an aromatic polycarbonate resin (A) and 10 to 40 parts by mass of a polyester resin (B), 3 to 20 parts by mass of a graft copolymer (C) formed by graft polymerization of a (meth)acrylic acid ester compound with a diene-based rubber and 0.005 to 0.1 parts by mass of a stabilizer (D). The graft copolymer (C) has a sulfur content of 100 to 1,500 ppm and an average particle diameter of 70 to 240 nm, and the stabilizer (D) is an organic phosphate compound represented by the following general formula (I). O?P(OH)m(OR)3-m??(I) R represents an alkyl group or an aryl group. m represents 0 to 2.
    Type: Application
    Filed: March 15, 2013
    Publication date: March 19, 2015
    Applicant: MITSUBISHI ENGINEERING-PLASTICS CORPORATION
    Inventor: Yuusuke Nii