Patent ID: 8524812

Claim:
A composition comprising (a) a natural or synthetic polymer subject to degradation induced by light, heat or oxidation, and (b) 0.001 to 10% by weight, relative to the weight of the natural or synthetic polymer, of a product mixture containing components b-I, b-II, b-III and b-IV; component b-I being a compound of formula (I) with a degree of substitution of 1 in an amount of from 5 to 25 parts by weight, component b-II being a compound of formula (I) with a degree of substitution of 2 in an amount of from 5 to 35 parts by weight, component b-III being a compound of formula (I) with a degree of substitution of 3 in an amount of from 10 to 45 parts by weight and component b-IV being a compound of formula (I) with a degree of substitution of 4 in an amount of from 10 to 45 parts by weight, the sum of the parts of components bI to bIV being 100; formula (I) being wherein the radicals R 1 are C 4 -C 20 alkyl, C 4 -C 20 alkoxy, C 3 -C 12 cycloalkoxy or a group wherein for component b-I, b-II and b-III the radicals R 1 can additionally be hydrogen, oxygen or hydroxyl; where degree of substitution denotes the number of substituents R 1 which are C 4 -C 20 alkyl, C 4 -C 20 alkoxy, C 3 -C 12 cycloalkoxy or a group and the radicals R 2 and R 3 are independently of one another hydrogen, C 1 -C 12 alkyl, C 5 -C 12 cycloalkyl unsubstituted or substituted by 1 to 3 C 1 -C 4 alkyl; phenyl unsubstituted or substituted by 1 to 3 radicals selected from —OH and C 1 -C 10 alkyl; C 7 -C 9 phenylalkyl unsubstituted or substituted on the phenyl by 1 to 3 radicals selected from —OH and C 1 -C 10 alkyl; or a group of formula (I-1) wherein R 4 is hydrogen, C 4 -C 20 alkyl, C 4 -C 20 alkoxy, C 3 -C 12 cycloalkoxy or a group of formula the radicals R 2 and R 3 , together with the nitrogen they are attached to, form a morpholino group.