Patent ID: 7642315
Filing Date: 2010-01-05
Classification: C08G,C08L

Abstract:
1. A polycarbonate copolymer comprising, A) 5 to 30 weight percent of a structure derived from a dihydroxy alkylene oxide compound selected from the group consisting of formula (1a) and formula (1b): wherein E and X are different and each and independently are selected from the group consisting of formula (2a) and formula (2b): wherein R is a C 1-8 alkyl group; l, m, and n are integers greater than or equal to 1; and wherein the weight average molecular weight of the total amount of the structures corresponding to formula (2b) in the copolymer is between 100 and 2,000 g/mol; and B) 70 to 95 weight percent of a structure derived from a dihydroxy aromatic compound, wherein the weight percentages are based on the total weight of the structures of A) and B), wherein an article with a thickness of 3.2 mm and molded from the polycarbonate copolymer has a haze of less than or equal to 5% according to ASTM D1003-00.