Patents Examined by Thomas J. Wallen
  • Poly (isopropenyl esters) as carboxylic acid-release agents on tobacco
    Patent number: 4171702
    Abstract: This invention provides carboxylic acid flavorant-release oligomeric and polymeric derivatives corresponding to the structural formula: ##STR1## WHEREIN R is a member selected from aliphatic, alicyclic, and aromatic hydrocarbon radicals and n is an integer. The oligomeric and polymeric derivatives are stable when used in smoking products and on pyrolysis release the carboxylic acid flavorants to enhance the flavor and aroma of the smoke.
    Type: Grant
    Filed: January 10, 1978
    Date of Patent: October 23, 1979
    Assignee: Philip Morris Incorporated
    Inventor: Harvey J. Grubbs