Patents by Inventor Taiki HERAI

Taiki HERAI 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 carboxyl-group-containing nitrile rubber
    Patent number: 11161920
    Abstract: A method of producing a carboxyl group-containing nitrile rubber including a coagulation step of coagulating a carboxyl group-containing nitrile rubber component by mixing a monovalent metal salt and a polymer flocculating agent into a carboxyl group-containing nitrile rubber latex having an iodine value of 120 or less, wherein the monovalent metal salt is compounded in an amount of 3 to 25 parts by weight and the polymer flocculating agent is compounded in an amount of 0.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: November 2, 2021
    Assignee: ZEON CORPORATION
    Inventors: Taiki Herai, Tsutomu Yoshimura
  • METHOD FOR PRODUCING CARBOXYL-GROUP-CONTAINING NITRILE RUBBER
    Publication number: 20200031955
    Abstract: A method of producing a carboxyl group-containing nitrile rubber including a coagulation step of coagulating a carboxyl group-containing nitrile rubber component by mixing a monovalent metal salt and a polymer flocculating agent into a carboxyl group-containing nitrile rubber latex having an iodine value of 120 or less, wherein the monovalent metal salt is compounded in an amount of 3 to 25 parts by weight and the polymer flocculating agent is compounded in an amount of 0.
    Type: Application
    Filed: March 23, 2018
    Publication date: January 30, 2020
    Applicant: ZEON CORPORATION
    Inventors: Taiki HERAI, Tsutomu YOSHIMURA