Benzene and naphthylene derivatives and their use as UV screening agents

摘要

Methods for making UV screening compositions by combining benzoxazolyl benzene derivatives of formula (I): wherein R¹ is hydrogen, C_1-20-alkyl or C_2-20-alkenyl; R² and R³ are independently a group -C(R⁴,R⁵)C(R⁶)-C(R⁷,R⁸) (a) or a group -C(R^4',R^5')CH(R^6')CH(R^7',R^8') (b), wherein R⁴, R⁵, R⁶, R⁷, R⁸, R^4', R^5', R^6', R^7' and R^8' are independently, hydrogen, C_1-10-alkyl or C_2-10-alkenyl, or C_2-10-alkyl or C_3-10-alkenyl containing at least one oxygen atom interrupting the hydrocarbon chain; or wherein R⁴, R⁵, R⁶, R^4', R^5' and R^6' are hydrogen, C_1-10-alkyl or C_2-10-alkyl containing at least one oxygen atom interrupting the hydrocarbon chain, or alkyl substituted by silane or oligosiloxane moiety, and one of R⁷ and R⁸ or R^7' and R^8' is a silane or oligosiloxane moiety and the other one of R⁷ and R⁸ or R^7' and R^8' is hydrogen; and X is phenylene or naphthylene, or substituted phenylene or naphthylene with a cosmetic base. Methods of protecting a surface from UV radiation by applying a UV screening agent of formula I to a surface such as hair or skin.