Alkyl benzene sulfonyl urea photostabilizers and UV-absorbers

Details Alkyl benzene sulfonyl urea photostabilizers and UV-absorbers Alkyl benzene sulfonyl urea photostabilizers and UV-absorbers

2011-07-19

2011-07-19

Kosar, Andrew D (Department: 1622)

Drug, bio-affecting and body treating compositions

Topical sun or radiation screening, or tanning preparations

C558S410000

Reexamination Certificate

active

07981402

ABSTRACT:
Polymers containing one or more novel photoactive moieties, sunscreen compositions including a mixture of a photoactive compound and a polymer containing one or more photoactive moieties are described herein.Polymer of formula (I):wherein the variables are as claimed.Also disclosed are methods for stabilizing a sunscreen composition, methods of filtering out ultra-violet light from a substrate by the addition of one or more of the foregoing polymers, methods accepting the triplet excited state energy with one or more of the foregoing polymer, and methods of increasing the UV-A Protective Value are described herein.

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