Patents by Inventor Mika NAKASHIMA

Mika NAKASHIMA 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).

  • Method for producing oxymethylene copolymer resin composition, and oxymethylene copolymer resin composition
    Patent number: 11820857
    Abstract: The present invention provides a method for producing an oxymethylene copolymer resin composition, comprising: adding to an oxymethylene copolymer (A), an Mn micromole of an amine-substituted triazine compound (B) per gram of the oxymethylene copolymer (A), an Mc micromole of a choline hydroxide (C) per gram of the oxymethylene copolymer (A), and 0.05 to 1.1 parts by weight of an antioxidant (D) with respect to 100 parts by weight of the oxymethylene copolymer (A), and melt kneading a mixture of the oxymethylene copolymer (A), amine-substituted triazine compound (B), the choline hydroxide (C), and the antioxidant (D), wherein Mn (?mol/g-POM) and Mc (?mol/g-POM) satisfy: 6.5<(Mn+Mc×8)<25, 0.5<Mn<7.0, and 0.0<Mc.
    Type: Grant
    Filed: August 6, 2021
    Date of Patent: November 21, 2023
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Mika Nakashima, Daisuke Sunaga
  • METHOD FOR PRODUCING OXYMETHYLENE COPOLYMER RESIN COMPOSITION, AND OXYMETHYLENE COPOLYMER RESIN COMPOSITION
    Publication number: 20220356290
    Abstract: The present invention provides a method for producing an oxymethylene copolymer resin composition, comprising: adding to an oxymethylene copolymer (A), an Mn micromole of an amine-substituted triazine compound (B) per gram of the oxymethylene copolymer (A), an Mc micromole of a choline hydroxide (C) per gram of the oxymethylene copolymer (A), and 0.05 to 1.1 parts by weight of an antioxidant (D) with respect to 100 parts by weight of the oxymethylene copolymer (A), and melt kneading a mixture of the oxymethylene copolymer (A), amine-substituted triazine compound (B), the choline hydroxide (C), and the antioxidant (D), wherein Mn (?mol/g-POM) and Mc (?mol/g-POM) satisfy: 6.5<(Mn+Mc×8)<25, 0.5<Mn<7.0, and 0.0<Mc.
    Type: Application
    Filed: August 6, 2021
    Publication date: November 10, 2022
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Mika NAKASHIMA, Daisuke SUNAGA