| 摘要 |
<p>Use in cosmetics of diorganopolysiloxanes containing a beta -keto ester group, corresponding to the formula: <IMAGE> (I) in which: the groups R, which may be identical or different, denote, independently of one another, a C1-C4 alkyl, 3,3,3-trifluoropropyl, vinyl or phenyl groups, at least 80%, in numerical terms of the groups R being methyl radicals; the groups Y, which may be identical or different, denote, independently of one another, a C1-C18 linear or branched alkylene link, optionally extended by a polyether chain; the groups X, which may be identical or different, denote, independently of one another, a radical Y-OH or Y-OCOR', Y having the meaning stated above and R' being chosen from C1-C18 linear or branched alkyl or alkenyl groups; the groups Z, which may be identical or different, denote, independently of one another, a group R as defined above or alternatively a radical <IMAGE> Y having the meaning stated above, it also being possible for Z to denote a group OR' in which R' has the meaning stated above; p is an integer between 1 and 50 inclusive, and preferably between 1 and 16 inclusive; q is an integer between 0 and 30 inclusive, and preferably between 0 and 8 inclusive; and r is an integer between 0 and 500 inclusive, and preferably between 2 and 50 inclusive; or a mixture of these copolymers of formula (I), in which case p, q and r can be decimal numbers.</p> |
