Patents by Inventor Yuuta MAENAKA

Yuuta MAENAKA 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).

  • Rubber-containing graft polymer, resin composition containing rubber-containing graft polymer, and shaped article of same
    Patent number: 11634574
    Abstract: Provided is a rubber-containing graft polymer which is excellent in mechanical strength such as weld strength or impact strength, required as a rubber-containing graft polymer. A rubber-containing graft polymer (A) of the present invention is a rubber-containing graft polymer having a graft chain, in which when the rubber-containing graft polymer is mixed with an organic solvent and separated into an organic solvent insoluble component and an organic solvent soluble component, a caprolactone unit is contained in a graft chain contained in the organic solvent insoluble component.
    Type: Grant
    Filed: June 9, 2020
    Date of Patent: April 25, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Misaki Hagi, Shinji Matsuoka, Masashi Iimori, Tatsuhiro Hiraoka, Yuuta Maenaka
  • Rubber-containing graft polymer, resin composition containing rubber-containing graft polymer, and shaped article thereof
    Patent number: 11306203
    Abstract: Provided is a rubber-containing graft polymer that can be uniformly dispersed in a thermoplastic resin containing an alloy in a particle size of 100 to 300 nm and can improve strength developability required as a rubber-containing graft polymer. In a rubber-containing graft polymer (A) of the present invention, a rubber to be grafted has a particle size of 100 to 300 nm, a content of an organic solvent insoluble component in the rubber-containing graft polymer (100% by mass) is 92% to 99.5% by mass, and an organic solvent soluble component of the rubber-containing graft polymer has a weight average molecular weight of 250,000 to 700,000.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: April 19, 2022
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Shinji Matsuoka, Naotaka Suenaga, Saki Fujita, Masashi Iimori, Yuuta Maenaka, Misaki Hagi, Hiroya Arai
  • Acrylic polymer, plastisol, and textile ink
    Patent number: 11084896
    Abstract: There are provided an acrylic polymer and plastisol using which a textile ink having excellent washing resistance and crocking resistance can be produced and a textile ink having excellent washing resistance and crocking resistance. The acrylic polymer of the present invention is an acrylic polymer comprising an acetone-soluble portion (A) and an acetone-insoluble portion (B), and the content of the acetone-insoluble portion (B) in the acrylic polymer is 5 mass % to 29 mass %, and the content of methyl methacrylate units in the acetone-soluble portion (A) is 60 mass % to 85 mass %.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: August 10, 2021
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Eriko Satou, Toru Kondo, Saki Fujita, Yuuta Maenaka
  • RUBBER-CONTAINING GRAFT POLYMER, RESIN COMPOSITION CONTAINING RUBBER-CONTAINING GRAFT POLYMER, AND SHAPED ARTICLE OF SAME
    Publication number: 20200299502
    Abstract: Provided is a rubber-containing graft polymer which is excellent in mechanical strength such as weld strength or impact strength, required as a rubber-containing graft polymer. A rubber-containing graft polymer (A) of the present invention is a rubber-containing graft polymer having a graft chain, in which when the rubber-containing graft polymer is mixed with an organic solvent and separated into an organic solvent insoluble component and an organic solvent soluble component, a caprolactone unit is contained in a graft chain contained in the organic solvent insoluble component.
    Type: Application
    Filed: June 9, 2020
    Publication date: September 24, 2020
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Misaki HAGI, Shinji MATSUOKA, Masashi IIMORI, Tatsuhiro HIRAOKA, Yuuta MAENAKA
  • RUBBER-CONTAINING GRAFT POLYMER, RESIN COMPOSITION CONTAINING RUBBER-CONTAINING GRAFT POLYMER, AND SHAPED ARTICLE THEREOF
    Publication number: 20200216664
    Abstract: Provided is a rubber-containing graft polymer that can be uniformly dispersed in a thermoplastic resin containing an alloy in a particle size of 100 to 300 nm and can improve strength developability required as a rubber-containing graft polymer. In a rubber-containing graft polymer (A) of the present invention, a rubber to be grafted has a particle size of 100 to 300 nm, a content of an organic solvent insoluble component in the rubber-containing graft polymer (100% by mass) is 92% to 99.5% by mass, and an organic solvent soluble component of the rubber-containing graft polymer has a weight average molecular weight of 250,000 to 700,000.
    Type: Application
    Filed: March 13, 2020
    Publication date: July 9, 2020
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Shinji MATSUOKA, Naotaka SUENAGA, Saki FUJITA, Masashi IIMORI, Yuuta MAENAKA, Misaki HAGI, Hiroya ARAI
  • ACRYLIC POLYMER, PLASTISOL, AND TEXTILE INK
    Publication number: 20200140589
    Abstract: There are provided an acrylic polymer and plastisol using which a textile ink having excellent washing resistance and crocking resistance can be produced and a textile ink having excellent washing resistance and crocking resistance. The acrylic polymer of the present invention is an acrylic polymer comprising an acetone-soluble portion (A) and an acetone-insoluble portion (B), and the content of the acetone-insoluble portion (B) in the acrylic polymer is 5 mass % to 29 mass %, and the content of methyl methacrylate units in the acetone-soluble portion (A) is 60 mass % to 85 mass %.
    Type: Application
    Filed: January 7, 2020
    Publication date: May 7, 2020
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Eriko SATOU, Toru KONDO, Saki FUJITA, Yuuta MAENAKA