Patent ID: 7790807

Claim:
A composition comprising an extruded blend of a) an organic material which is susceptible to oxidative, thermal or light-induced degradation, and b) at least one compound of the formula I R 1 and R 2 are each independently —(CF 2 ) p F, wherein p is 4 to 15, R 3 and R 4 are each independently of the other hydrogen, a fluorine containing group, C 1 -C 12 alkyl, phenyl or or R 3 and R 4 , together with the carbon atom to which they are bonded, form a C 5 -C 8 -cycloalkylidene ring that is unsubstituted or substituted by from 1 to 3 C 1 -C 4 alkyl groups; R 5 , R 6 , R 7 and R 8 are each independently of the other hydrogen, C 1 -C 12 alkyl or C 3 -C 12 alkenyl, X 1 and X 2 are each independently of the other a direct bond or C 1 -C 12 alkylene, m is 1 to 10′000, and n is 0 to 10′000; and where the organic material is polyester, polyacrylate, polymethacrylate or polypropylene.