Patent ID: 6376679
Filing Date: 2002-04-23
Classification: A61K,A61Q,C07F

Abstract:
A liposoluble, photostable, UV-photoprotecting benz-x-azole-substituted silane or siloxane having the formula (1) or (2): â€ƒAâ€”SiRâ€²1Râ€²2Râ€²3â€ƒâ€ƒ(2)in which R is a C1-C30 saturated or unsaturated hydrocarbyl radical, a C1-C8 halogenated hydrocarbyl radical, or a trimethylsilyloxy radical; a is 1 or 2; the radicals Râ€²1, Râ€²2 and Râ€²3 are independently a C1-C8 linear or branched alkyl or alkenyl radical; and A is a radical having the structural formula (I): in which L is a divalent radical bonding said radical A to the silicon atom in the structural formula (1); the radicals R1 and R2 are independently a hydrogen atom, a C1-C10 linear or branched alkyl radical or a C2-C8 linear or branched alkenyl radical, wherein two adjacent R1 or R2 radicals are as defined above or together form an alkylidenedioxy radical wherein the alkylidene moiety has 1 or 2 carbon atoms; Y is C or N; and X is O, NR3, S when Y is C, or C when Y is N, wherein R3 is a hydrogen atom, or a C1-C8 alkyl radical; and n and m are, independently, 0 or 1.