Patents by Inventor Kwang-Chun Park

Kwang-Chun Park 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 preparing ethylbenzene from 4-vinylcyclohexene
    Patent number: 6130362
    Abstract: In the presence of a heterogeneous catalyst made of palladium supported on active carbon, ethylbenzene is prepared from 4-vinylcyclohexene through catalytic transfer hydrogenation in a hydrogen donor solvent with an oxidizing agent. Reaction temperature ranges from 50 to 110.degree. C. The hydrogen donor solvent is selected from the group consisting of alcohol, water, and a mixture of these. The oxidizing agent is selected from monovalent or divalent nitro compounds, water, hydrogen peroxide, NaOCl, NaClO.sub.2, NaClO.sub.3, NaClO.sub.4, oxygen and air, and used in the amount of 0.02 to 3 moles per mole of 4-vinylcyclohexene.
    Type: Grant
    Filed: January 14, 1997
    Date of Patent: October 10, 2000
    Assignee: Korea Kumho Petrochemical Co., Ltd.
    Inventors: Young J. Joo, Jeong-Im Won, Kwang-Chun Park, Chang-Min Kim