Sulfonium salt substantive sunscreen compositions
AssigneeColgate-Palmolive Company
InventorJohn Fred Gerecht
Life of this patent
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Abstract
A sunscreening composition comprising a highly substantive sulfonium salt sunscreening agent represented by the formula: ##STR1## wherein A is a sunscreening moiety, having a prominent spectral absorption peak within the range of 250-400 millimicrons; R represents alkylene of from 2 to 18 carbon atoms; R' and R" represent alkyl, and wherein the sum of the carbon atoms in R' and R" is not less than 9 and not greater than 27, and wherein the nitrogen is linked to A as a carboxamido or sulfonamido group, and X is an anion, in a carrier.
Claims19
A sunscreening composition comprising from 0.1% to 25% by weight of a substantive sulfonium salt sunscreening agent represented by the formula ##STR25## wherein A is a substituted benzene sunscreening moiety having a prominent spectral absorption peak within the range of 250-400 millimicrons and selected from the group consisting of 4-aminobenzoyl, 4-nitrobenzoyl, 2-hydroxybenzoyl, 4-(2'hydroxybenzoyl) benzoyl, 4-(2'-benzotriazoly)-2-hydroxybenzoyl, 4-aminobenzenesulfonyl, 4-nitrobenzene sulfonyl, 2-hydroxybenzenesulfonyl, 4-(2'-hydroxybenzoyl)benzenesulfonyl and 4-(2'benzotriazolyl)-2-hydroxybenzenesulfonyl;
- R represents an alkylene of from 2 to 18 carbon atoms;
- R' represents an alkyl group containing from 7 to 26 carbon atoms;
- R" represents an alkyl group containing 1 to 4 carbon atoms, the sum of R' and R" being not less than 9 carbon atoms and not greater than 27 carbon atoms;
- X is selected from the group consisting of Br, Cl, I, CH.sub.2 H.sub.5 SO.sub.4, CH.sub.3 CO.sub.2, and CH.sub.3 SO.sub.4 ;
- and a skin compatible, non-toxic carrier which is compatible with said agent.
Dependencies are inferred from the claim text.