Patents Assigned to Graesser Laboratories, Ltd.
  • Ultra-violet absorbing compounds and compositions containing said compounds
    Patent number: 4592906
    Abstract: 2-Ethylhexyl and 2-octyl p-dimethylaminocinnamates unexpectedly are liquid at room temperature and miscible with liquid paraffin (i.e. mineral oil) unlike related alkyl p-dimethylaminocinnamates such as 1-octyl p-dimethylaminocinnamate. They absorb light in the melanogenic range 320 to 420 nm and are dermatologically acceptable and hence useful as UVA absorbers in sunscreen and cosmetic compositions.
    Type: Grant
    Filed: February 8, 1985
    Date of Patent: June 3, 1986
    Assignee: Graesser Laboratories, Ltd.
    Inventor: James A. Baker