Patent ID: 7754825
Filing Date: 2010-07-13
Classification: C08K,C08L,Y10T

Abstract:
1. A light stabilized copolyetherester composition comprising a melt-mixed blend of: (a) about 94 to about 99.8 weight percent of at least one copolyetherester comprising a multiplicity of recurring long chain ester units and short chain ester units joined head-to-tail through ester linkages, said long chain ester units being represented by formula (I): (b) about 0.1 to about 4 weight percent of at least one nanoparticulate mineral selected from titanium dioxide, cerium oxide, and zinc oxide; and (c) about 0.1 to about 2 weight percent of at least one organic ultraviolet light stabilizer, which is at least one hindered amine light stabilizer, wherein all weight percentages are based on the total weight of (a)+(b)+(c), and provided that the composition does not contain carbon black.