Antisun cosmetic compositions based on a synergistic mixture of screening agents, and uses

摘要

New cosmetic or dermatological composition comprising a mixture of 1.4-di(3-methylidene-10-camphosulfonic) acid and a derivative of an amino substituted 2-hydroxybenzophenone in a suitable cosmetic support. ??The composition contains (a) 0.1 - 15% wt. of the acid component and (b) 0.1 - 15% of the substituted 2-hydroxybenzophenone of formula(I) :- - in which ??R1, R2 = H, 1 - 20C alkyl, 2 - 10C alkenyl, or 3 - 10C cycloalkyl or cycloalkenyl(R1 and R2 may form a 5 or 6 membered ring with the N atom); ??R3, R4 = 1 - 20C alkyl, 2 - 10C alkenyl, 3 - 10C cycloalkyl or cycloalkenyl, 1 - 12C alkoxy, 1 - 20C alkoxycarbonyl, 1 - 12C alkylamino or dialkylamino, aryl or heteroaryl optionally substituted or a hydrosolubilising agent from carboxylate, sulfonate or ammonium; ??X = H, COOR5 or CONR6R7; ??R5, R6 and R7 = H, 1 - 20C alkyl, 2 - 10C alkenyl, 3 - 10C cycloalkyl or cycloalkenyl, a group -(YO)o-Z or aryl; ??Y = -(CH2)2, -(CH2)3-, -(CH2)4 or -CH-CH3-CH2-; ??Z = -CH2-CH3, -CH2CH2CH3, -CH2CH2CH2CH3, or -CH(CH3)CH3; ??m = 0 - 3; ??n = 0 - 3; ??o = 1 - 2. ??The first and second UV filters are present in a proportion giving a synergistic activity for solar protection. An Independent claim is also included for the use of the composition.