Patents Assigned to Denkyi Kagaku Kogyo Kabushiki Kaisha
  • Isomerization of dichlorobutenes
    Patent number: 4237074
    Abstract: 3,4-Dichlorobutene-1 and 1,4-dichlorobutene-2 are isomerized in the presence of a catalyst of a combination of a copper compound or copper metal and at least one additive from the group of 1,3-diphenylguanidine, di-o-tolylguanidine, glycine ethyl ester hydrochloride and 2-amino-4-chlorophenol.
    Type: Grant
    Filed: August 2, 1979
    Date of Patent: December 2, 1980
    Assignee: Denkyi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Higashi Ito, Seiichi Watanabe