Patents Examined by Murray Tilman
  • .alpha.,.omega.-Diarylpolyene photosensitizers for sulfonylazide polymers
    Patent number: 3947337
    Abstract: A novel class of compounds is disclosed of the formula ##SPC1##Wherein R.sub.1 and R.sub.2 are lower-alkoxy or di(lower-alkyl)amino and R.sub.1 can be hydrogen and R.sub.3 and R.sub.4 are hydrogen, lower-alkoxy or di(lower-alkyl)amino and n is an integer from 1 to 5. The compounds are sensitizers for photosensitive compounds particularly polymers containing sulfonazido groups as the light-sensitive moiety.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: March 30, 1976
    Assignee: The Upjohn Company
    Inventors: Gerret M. Peters, Jr., Fred A. Stuber, Henri Ulrich