Patents by Inventor Misaki HAGI

Misaki HAGI 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: 11634526
    Abstract: Provided is a rubber-containing graft polymer capable of reducing wet heat aging of a shaped article while improving the strength developing property of a thermoplastic resin. In the rubber-containing graft polymer of the present invention, a content of components having a weight-average molecular weight of 800,000 or more is 1% by mass or more with respect to an organic solvent-soluble fraction (100% by mass) of the rubber-containing graft polymer, and a phosphorus content in the rubber-containing graft polymer is 3 to 30 mmol/kg.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: April 25, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Misaki Hagi, Shinji Matsuoka, Masashi Iimori, Masahiro Ueda, Hiroya Arai
  • 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
  • Patent number: 11548968
    Abstract: An object of the present invention is to provide a polyorganosiloxane-containing graft copolymer powder capable of providing a resin composition and a molded article which are excellent in balance between colorability and mechanical properties such as impact resistance. The polyorganosiloxane-containing graft copolymer powder according to the present invention is a graft copolymer powder obtained by graft-polymerizing a mixture (B) of a vinyl monomer (b1) having an epoxy group and another vinyl monomer (b2) to a rubber (A) containing a polyorganosiloxane, wherein the content of the polyorganosiloxane (A1) contained in the rubber (A) is 12 to 50% by mass, the mass average particle diameter of the polyorganosiloxane-containing graft copolymer powder is 300 to 2000 nm, and the epoxy equivalent of the polyorganosiloxane-containing graft copolymer powder is 2500 to 7800 g/eq.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: January 10, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Kenta Takemasu, Masahiro Ueda, Shinji Matsuoka, Hiroya Arai, Misaki Hagi, Masashi Iimori
  • 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
  • Publication number: 20200385504
    Abstract: An object of the present invention is to provide a polyorganosiloxane-containing graft copolymer powder capable of providing a resin composition and a molded article which are excellent in balance between colorability and mechanical properties such as impact resistance. The polyorganosiloxane-containing graft copolymer powder according to the present invention is a graft copolymer powder obtained by graft-polymerizing a mixture (B) of a vinyl monomer (b1) having an epoxy group and another vinyl monomer (b2) to a rubber (A) containing a polyorganosiloxane, wherein the content of the polyorganosiloxane (A1) contained in the rubber (A) is 12 to 50% by mass, the mass average particle diameter of the polyorganosiloxane-containing graft copolymer powder is 300 to 2000 nm, and the epoxy equivalent of the polyorganosiloxane-containing graft copolymer powder is 2500 to 7800 g/eq.
    Type: Application
    Filed: August 24, 2020
    Publication date: December 10, 2020
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kenta Takemasu, Masahiro Ueda, Shinji Matsuoka, Hiroya Arai, Misaki Hagi, Masashi Iimori
  • 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
  • Publication number: 20200239614
    Abstract: Provided is a rubber-containing graft polymer capable of reducing wet heat aging of a shaped article while improving the strength developing property of a thermoplastic resin. In the rubber-containing graft polymer of the present invention, a content of components having a weight-average molecular weight of 800,000 or more is 1% by mass or more with respect to an organic solvent-soluble fraction (100% by mass) of the rubber-containing graft polymer, and a phosphorus content in the rubber-containing graft polymer is 3 to 30 mmol/kg.
    Type: Application
    Filed: April 13, 2020
    Publication date: July 30, 2020
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Misaki HAGI, Shinji MATSUOKA, Masashi IIMORI, Masahiro UEDA, Hiroya ARAI
  • 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