Patents Represented by Attorney Edward Whitfield
  • Patent number: 4154765
    Abstract: An improved method for brominating cinnamalacetophenone is characterized by the use of a saturated aliphatic hydrocarbon as the reaction medium, recycling of the reaction medium as a mother liquor, and the alternating use of stoichiometric amounts and less-than-stoichiometric amounts of bromine in the preparation of cinnamalacetophenone tetrabromide.
    Type: Grant
    Filed: July 10, 1975
    Date of Patent: May 15, 1979
    Assignee: PPG Industries, Inc.
    Inventor: Lowell D. Grinninger