Patent ID: 6143850
Filing Date: 2000-11-07
Classification: A61K,A61Q,C08F

Abstract:
A polymeric UV absorber comprising the units shown in brackets in schematized formula I ##STR16## wherein the sequence of the units is arbitrary, the sum of a+b+c+d=100 anda is a percentage value from 5 to 95,b is a percentage value from 0 to 70,c is a percentage value from 5 to 95, andd is a percentage value from 0 to 70;R.sup.1, R.sup.2 independently of one another are H or C.sub.1 -C.sub.8 -alkyl;R.sup.3 is ##STR17## X.sup.1, X.sup.2 independently of one another are H,C.sub.1 -C.sub.8 -alkyl, or ##STR18## X.sup.3 is H, C.sub.1 -C.sub.8 -alkyl, or ##STR19## X.sup.4 is H, C.sub.1 -C.sub.8 -alkyl, ##STR20## X.sup.5, X.sup.6 independently of one another are H, C.sub.1 -C.sub.8 -alkyl, ##STR21## X.sup.7 is H or C.sub.1 - to C.sub.8 -alkyl; is --(CO).sub.n --R.sup.5 ;R.sup.5 is C.sub.1 -C.sub.28 -alkyl;n is 0 or 1;R.sup.6 is C.sub.1 -C.sub.22 -alkyl; andR.sup.7, R.sup.8 independently of one another are H or CH.sub.3.