Patents Represented by Law Firm Richmond, Phillips, Hitchock & Fish
  • Cyclodimerization of butadiene
    Patent number: 5625101
    Abstract: 1,3-butadiene is cyclodimerized to 4-vinylcyclohexene in the presence of at least one copper(I) sulfonate as the catalyst.
    Type: Grant
    Filed: June 30, 1995
    Date of Patent: April 29, 1997
    Assignee: Phillips Petroleum Company
    Inventors: Tin-Tack P. Cheung, Marvin M. Johnson