Patent ID: 7713444

Claim:
A light stabilisation mixture containing 10% to 90% by weight of oligomers of formula (I) wherein: x is between 2 and 10 m and n, each independent from each other, are 2 to 8 and have different values in the individual monomer units constituting the light stabilisation mixture, R′ and R″, which are the same or different, are straight or branched C 2 -C 8 alkyl groups, or a group of formula (V) wherein R′″═H or a straight or branched C 1 -C 4 alkyl group and at least one group of formula A, B, C, D, E or F; (A) wherein: R is: R 1 is H or a straight or branched C 1 -C 4 alkyl, and n is 2 to 10; (B) wherein: R 1 is hydrogen or methyl, R 2 is a direct bond or a C 1 -C 10 alkylene group, and n is between 2 and 50; (C) wherein: n is between 2 and 50, p is between 2 and 10, R is H or methyl and X is a group of formula VII, VIII or IX: wherein R 1 is a C 1 -C 4 straight or branched alkyl radical and R 2 is H or methyl; (D) wherein: n is between 2 and 10, and R is H or methyl; (E) wherein: R is wherein R 1 and R 2 are independently H, a straight or branched C 1 -C 4 alkyl group or a group of formula (V) wherein R′″ is H or a straight or branched C 1 -C 4 alkyl; (F) wherein R is the same as defined above for Formula E.