Patent ID: 6887939

Claim:
A stabilized polymer material, comprising: (1) a polymer material, and (2) a stabilizing effective amount of a copolymer of ethylene or propylene (A) and a vinyl compound (B) with the formula (I), produced by radical copolymerization of (A) and (B) wherein X is O, NH or NR 5 ; R 1 , R 2 and R 3 independently each are H, C 1 -C 8 alkyl, C 1 -C 8 alkenyl or C 1 -C 8 substituted aryl; R 4 is H, C 1 -C 8 alkyl, C 6 -C 12 cycloalkyl, C 1 -C 10 acyl, C 1 -C 10 acyloxy or C 1 -C 8 alkyl ether; and R 5 is C 1 -C 8 alkyl; wherein the copolymer comprises 1-4 mol % of (B), and the copolymer has an MFR 2 of 1-1000 g/10 min.