Patent ID: 7425590

Claim:
A polymer composition comprising: (A) about 1 to 99 percent by weight of a first component comprising at least one polyester (A) comprising: (1) diacid residues comprising about 70 to 100 mole percent of phthalic acid residues selected from the group consisting of terephthalic acid residues, isophthalic acid residues, or mixtures thereof; and 0 to about 30 mole percent of modifying dicarboxylic acid residues, wherein the total mole percent of diacid residues is equal to 100 mole percent; and (2) diol residues comprising about 0 to 45 mole percent of 1,4-cyclohexanedimethanol residues and 100 to about 55 mole percent of other alkylene glycol residues, wherein the total mole percent of diol residues is equal to 100 mole percent; and (B) about 99 to 1 percent by weight of a second component comprising a miscible blend of: (1) at least one polycarbonate (B) of bisphenol A; (2) at least one polyester (C) consisting essentially of 1,4-cyclohexanedicarboxylic acid residues and 70 to 100 mole percent of residues of 1,4-cyclohexanedimethanol and 0 to 30 mole percent of residues of polytetramethylene glycol; and (3) optionally, at least one salt (D) prepared by the reaction of one or more acidic phosphorus-containing compounds with one or more basic organic compounds which contain nitrogen; wherein the total weight percent of the first component and the second component is equal to 100 weight percent; and wherein the total weight percent for the second component of polycarbonate (B) and polyester (C) is equal to 100 weight percent; and wherein the first component and second component have refractive indices which differ in absolute value by 0.008 or less and the composition comprises 0.1 to 15.7 percent by weight of polyester (C) based on the total of polyester (A), polycarbonate (B) and polyester (C).