Organic insoluble UV filters of the aryl vinylene ketone type and their use in cosmetics

摘要

New insoluble aryl vinylene ketone type UV radiation filtering compounds of two specified formulae are presented in the form of particles with average size 10 nm to 5 microns, and used to protect a material sensitive to UV radiation, in particular solar radiation or to prepare medicaments designed to prevent the adverse effect of UV radiation. New insoluble aryl vinylene ketone type UV radiation filtering compounds are of formula (I) or (II), and are presented in the form of particles with average size 10 nm to 5 microns. n = 1, 2; A in (I) and (II), when n is 1 = formulae (a)-(d); A in (I), when n is 2 = formulae (e)-(h); R4 = OH, halogen, 1-6C alkyl or alkoxy optionally containing a silicon atom, 1-5C alkoxycarbonyl, 1-6C alkylsulfonamide optionally containing a silicon atom, aminoacid; R1 = H, OH; R2 = H, 1-6C alkyl optionally containing a silicon atom, cyano, 1-6C alkylsulfonyl, phenylsulfonyl; R3 = 1-6C alkyl optionally containing a silicon atom, phenyl capable of forming a bicycle and optionally substituted by one or two R4, with R2 a 2-10C mono- bi- or tricyclic hydrocarbon residue optionally interrupted by one or more nitrogen or oxygen or sulfur atoms and capable of containing another carbonyl and optionally substituted with a 1-8C alkylsulfonamide optionally containing a silicon atom or an aminoacid; p = 0-4; q = 0, 1; when n is 1 R2 and R3 do not form a camphor nucleus. Independent claims are included for a non-therapeutic method of protecting the skin or hair against UV radiation by applying the claimed composition or a claimed compound and for a non-therapeutic procedure for controlling variation in the color of the skin caused by UV radiation by applying the claimed composition or a claimed compound.