Patents by Inventor Tomohito YAMANOUE

Tomohito YAMANOUE 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 recovering unreacted alpha, beta-ethylenically unsaturated nitrile monomer contained in latex of carboxyl group-containing nitrile rubber
    Patent number: 11345765
    Abstract: A method for recovering an unreacted ?,?-ethylenically unsaturated nitrile monomer contained in a latex of a nitrile rubber obtained by emulsion polymerizing a monomer mixture comprising an ?,?-ethylenically unsaturated nitrile monomer and a carboxyl group-containing monomer is provided. The method includes the steps of: adjusting a pH of the latex of the carboxyl group-containing nitrile rubber to 6.5 or more; decompressing the latex of the carboxyl group-containing nitrile rubber having the pH adjusted to 6.5 or more under a heating condition; and recovering a component evaporated by the decompression under the heating condition.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: May 31, 2022
    Assignee: ZEON CORPORATION
    Inventors: Tsutomu Yoshimura, Tomohito Yamanoue
  • Method for Recovering Unreacted Alpha, Beta-Ethylenically Unsaturated Nitrile Monomer Contained in Latex of Carboxyl Group-Containing Nitrile Rubber
    Publication number: 20210002391
    Abstract: A method for recovering an unreacted ?,?-ethylenically unsaturated nitrile monomer contained in a latex of a nitrile rubber obtained by emulsion polymerizing a monomer mixture comprising an ?,?-ethylenically unsaturated nitrile monomer and a carboxyl group-containing monomer is provided. The method includes the steps of: adjusting a pH of the latex of the carboxyl group-containing nitrile rubber to 6.5 or more; decompressing the latex of the carboxyl group-containing nitrile rubber having the pH adjusted to 6.5 or more under a heating condition; and recovering a component evaporated by the decompression under the heating condition.
    Type: Application
    Filed: March 13, 2019
    Publication date: January 7, 2021
    Applicant: ZEON CORPORATION
    Inventors: Tsutomu YOSHIMURA, Tomohito YAMANOUE