Patent ID: 6464817
Filing Date: 2002-10-15
Classification: C08F,C08K,Y10T

Abstract:
A method of protecting a substrate from the effects of ultraviolet light, the method comprising applying a polymeric film to the substrate, said film comprising a polyolefin and the reaction product of a carboxyl functional oligomer and a hydroxy functional ultraviolet light absorbing compound, wherein the ultraviolet light absorbing compound is of formula (I) or (IV): wherein each R1 is independently halogen, hydroxy, straight-chain or branched C1-12 alkyl, straight-chain or branched C2-12 alkenyl, straight-chain or branched C1-12 alkoxy, straight-chain or branched C2-12 alkenyloxy, straight-chain or branched C-1-12 alkanol, amino, straight-chain or branched C1-12 alkylamino, or straight-chain or branched C1-12 dialkylamino; Y is a C1-18 alkylene of C2-18 alkenylene group which may be straight-chain or branched and which may be interrupted by one or more wherein each R2 is independently H or C1-6 alkyl that may be straight-chain or branched; and Z is â€”OH.