Patent ID: 6221342
Filing Date: 2001-04-24
Classification: A61K,A61Q

Abstract:
A method of protecting human and animal skin and hair from the damaging effect of UV radiation which comprises applying to said human or animal skin or hair a UV absorber of formula ##STR56##whereinR.sub.1 and R.sub.2 are each independently of the other hydrogen; branched C.sub.5 -C.sub.18 alkyl; C.sub.2 -C.sub.18 alkenyl; a radical of formula --CH.sub.2 --CH(--OH)--CH.sub.2 --O--T.sub.1 ; a radical of formula (1a) ##STR57##or a radical of formula (1b) ##STR58##R.sub.3 and R.sub.4 are each independently of the other hydrogen or C.sub.1 -C.sub.5 alkyl;R.sub.5 is hydroxy; C.sub.1 -C.sub.5 alkoxy which is unsubstituted or substituted by one or several OH groups; amino; mono- or di-C.sub.1 -C.sub.5 alkylamino; M; a radical of formula ##STR59##R.sub.6 is a direct bond; a straight-chain or branched C.sub.1 -C.sub.4 alkylene radical or a radical of formula ##STR60##R.sub.7, R.sub.8 and R.sub.9 are each independently of one another C.sub.1 -C.sub.18 alkyl; C.sub.1 -C.sub.18 alkoxy or a radical of formula ##STR61##R.sub.10, R.sub.11 and R.sub.12 are each independently of one another C.sub.1 -C.sub.14 alkyl which is unsubstituted or substituted by one or several OH groups;R.sub.b 13 is hydrogen; M; C.sub.1 -C.sub.5 alkyl; or a radical of formula --(CH.sub.2).sub.m.sub..sub.2 --O--T.sub.1 ;R.sub.14 is C.sub.1 -C.sub.5 alkyl;M is a metal cation;T.sub.1 is hydrogen; or C.sub.1 -C.sub.8 alkyl;m.sub.1 is 1 to 3;m.sub.2 is 2 to 14; andp.sub.1 is 0; or a number from 1 to 5.