Patent ID: 7462670

Claim:
A polymer composition comprising a) a polyamide substrate and an amount effective to improve the scratch resistance and light stability of said polyamide substrate of an additive combination of b) a carboxylic acid reagent functionalized olefin polymer or copolymer and c) a primary or secondary fatty acid amide, where the functionalized olefin polymer or copolymer is a long chain ester, long chain half ester, long chain amide, long chain partial amide or long chain imide, which ester, half ester, amide, partial amide or imide is formed by the reaction of a long chain alcohol or long chain primary or secondary amine of the formulae R 1 OH or R 1 R 2 NH, where R 1 is C 12 -C 22 alkyl or C 12 -C 22 alkenyl and R 2 is hydrogen, C 1 -C 22 alkyl or C 2 -C 22 alkenyl, with an olefin polymer or copolymer grafted with an alpha, beta-unsaturated carboxylic acid reagent or with a reaction product of an alpha-olefin with an alpha, beta-unsaturated carboxylic acid reagent.