| 摘要 |
<p>Cosmetic composition for topical use comprises a combination of a benzotriazole ultraviolet filter (I) and an ultraviolet filter (II) selected from compounds (IIA) containing at least two benzoazolyl groups and compounds (IIB) containing at least one benzodiazolyl group, where the combination of (I) and (II) provides a synergistically enhanced solar protection factor. Cosmetic composition for topical use comprises a combination of a benzotriazole ultraviolet filter of formula (I) and an ultraviolet filter (II) selected from compounds (IIA) containing at least two benzoazolyl groups and compounds (IIB) containing at least one benzodiazolyl group, where the combination of (I) and (II) provides a synergistically enhanced solar protection factor. A = H or -L-W; n = 1-3; Y = 1-10C alkyl, halo, 1-10C alkoxy or SO3H, or two Y groups on adjacent positions of the same aromatic ring form 1-2C alkylidenedioxy, provided that Y are not SO3H when A is -L-W; L = -(X)m-(CH2)p-CHZ-CH2-; X = O or NH; Z = H or 1-4C alkyl; n = 0-3; m = 0 or 1; p = 1-10; W = Si(R)3 or a group of formula (i) or (ii): R = 1-10C alkyl, phenyl and/or 3,3,3-trifluoropropyl, ay least 80% being methyl; B = R or V; V = group of formula (I) with A replaced by L; r = 0-50; s = 1-20; u = 1-6; t = 0-10; t+u = 3 or more; provided that at least one B group is V when s is zero.</p> |
