Patent ID: 6214324
Filing Date: 2001-04-10
Classification: A61K,A61Q

Abstract:
A topically applicable sunscreen/cosmetic suited for the photoprotection of human skin and/or hair, comprising synergistically UV-photoprotecting effective amounts of each of at least one benzotriazole compound having the following structural formula (I): ##STR23##in which A is a hydrogen atom, or a divalent radical --L--W--; n has the value 1, 2 or 3; the radicals Y, which may be identical or different, are each a C.sub.1 -C.sub.10 alkyl radical, a halogen atom, a C.sub.1 -C.sub.10 alkoxy radical or a sulfo groups, with the proviso that, in the latter case, two adjacent Y radicals of the same aromatic nucleus can together form an alkylidenedioxy group in which the alkylidene moiety has 1 on 2 carbon atoms, with the further proviso that the Y radicals are other than a sulfo group when A is other than hydrogen; L is a divalent radical of the following formula (II): ##STR24##in which X is O or NH; Z is a hydrogen atom, or a C.sub.1 -C.sub.4 alkyl radical; n is an integer ranging from 0 to 3, inclusive; m is 0 or 1; p is an integer ranging from 1 to 10, inclusive; W is a radical having the following formula (1), (2) or (3): ##STR25##or--Si(R).sub.3 (3)in which formulae the radicals R, which may be or different, are each a C.sub.1 -C.sub.10 alkyl radical, phenyl or 3,3,3-trifluoro-propyl radical, at least 80% by number of the R radicals being methyl; the radicals B, which may be identical or different, are each an R radical or a V radical having the following formula: ##STR26##in which Y, n and L are as defined above; r is an integer ranging from 0 to 50, inclusive, and s is an integer ranging from 1 to 20, inclusive and, if s=0, at least one of the two B radicals os a radical V; u is an integer ranging from 1 to 6, inclusive, and t is an integer ranging from 0 to 10, inclusive, with the proviso that t+u is equal to or greater than 3; and (b) at least one compound containing at least two benzoazolyl groups per molecule and/or at least one compound containing, per molecule, at least one benzodiazolyl group, formulated into a topically applicable, cosmetically acceptable vehicle, diluent or carrier therefor.