Patents Represented by Attorney Michael Jenkins
  • Patent number: 4024328
    Abstract: In the preparation of polyquaternary ammonium salts by alkylation of a dialkylaminomethylacrylamide polymer with an alkyl halide in an aqueous solution of the polymer, more rapid and complete alkylation is obtained when the reaction is carried out in an acidic medium containing a lower alkanol such as methanol.
    Type: Grant
    Filed: October 1, 1975
    Date of Patent: May 17, 1977
    Assignee: The Dow Chemical Company
    Inventor: Maurice L. Zweigle