Patents by Inventor Ching Y. Wu

Ching Y. Wu 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 preparing elastomers for pressure-sensitive adhesive application
    Patent number: 4072808
    Abstract: A process for producing an elastomer comprising selected copolymerized C.sub.5 -hydrocarbons from a hydrocarbon mixture containing C.sub.5 -monoolefinic hydrocarbons, C.sub.5 -diolefinic hydrocarbons (cyclic and acyclic) C.sub.5 -paraffins, C.sub.6 -aliphatics and benzene which comprises separating the C.sub.5 -hydrocarbons from the mixture and copolymerizing a selected portion of the resulting C.sub.5 -hydrocarbon mixture in the presence of a catalyst system to form an elastomer. The elastomers produced are suitable for use in adhesive compositions in general but particularly useful as a component in pressure sensitive adhesive compositions.
    Type: Grant
    Filed: December 29, 1976
    Date of Patent: February 7, 1978
    Assignee: Gulf Research & Development Company
    Inventors: Pallavoor R. Lakshmanan, Harold E. Swift, Ching Y. Wu