Process for reducing the photoblueing of a cosmetic composition containing titanium oxide pigments

摘要

Photo-blueing of compositions containing titanium dioxide pigments is reduced by incorporating a silicone benzotriazole compound of formula (I) or (II). Each R = 1-10 C alkyl, phenyl, 3,3,3- trifluoropropyl or trimethylsilyloxy, at least 80 % of the number of groups R are Me; r = a whole number 0-50; s = a whole number 1-20; u = a whole number 1-6; t = a whole number 0-10; t+u 3; and A is a monovalent radical attached directly to a Si atom, having the formula (III). Each Y = 1-8 C alkyl, halogen or 1-4 C alkoxy or two adjacent groups Y attached to the same aromatic ring may form a di-oxyalkylidene group in which the alkylidene part contains 1 or 2 C; X = O or NH; Z = H or 1-4 C alkyl; n = a whole number 0-3; m = 0 or 1 and p = a whole number 1-10.