Patents by Inventor MyoungSeup So

MyoungSeup So 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).

  • Process for removal of metal catalyst from polymer selectively hydrogenated using organotitanium compound
    Patent number: 6465609
    Abstract: The present invention provides an effective process for removal of the residual metal catalyst from a polymer solution using water and alcohol containing an inorganic acid after selective hydrogenation of the unsaturated olefinic double bonds in a polymer of a conjugated diene monomer or a copolymer of a conjugated diene monomer and an aromatic vinyl monomer in the presence of a homogeneous organotitanium catalyst, which is an economical and simple process especially for the purpose of an industrial use for effectively removing the residual titanium compounds and lithium salts from the hydrogenated polymer solution.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: October 15, 2002
    Assignee: Korea Kumho Petrochemical Co., Ltd.
    Inventors: YoungHoon Ko, HooChae Kim, JaeYun Kim, KyungHo Row, MyoungSeup So
  • Process for removal of metal catalyst from polymer selectively hydrogenated using organotitanium compound
    Publication number: 20020099149
    Abstract: The present invention provides an effective process for removal of the residual metal catalyst from a polymer solution using water and alcohol containing an inorganic acid after selective hydrogenation of the unsaturated olefinic double bonds in a polymer of a conjugated diene monomer or a copolymer of a conjugated diene monomer and an aromatic vinyl monomer in the presence of a homogeneous organotitanium catalyst, which is an economical and simple process especially for the purpose of an industrial use for effectively removing the residual titanium compounds and lithium salts from the hydrogenated polymer solution.
    Type: Application
    Filed: August 15, 2001
    Publication date: July 25, 2002
    Inventors: YoungHoon Ko, HooChae Kim, Jae Yun Kim, KyungHo Row, MyoungSeup So