Patent ID: 7605221
Filing Date: 2009-10-20
Classification: C08G,C08L

Abstract:
1. A copolymer composition comprising: a polysiloxane block comprising siloxane units, wherein the polysiloxane block is of the formula: wherein x is 4 to 50, each R the polysiloxane block is of the formula: wherein q is 4 to 50; each R a polyarylate-polycarbonate block consisting essentially of arylate polyester units and aromatic carbonate units present in an amount of wherein the sum of the mole percentages of arylate polyester units and aromatic carbonate units in the arylate block is 100 mole percent, wherein the polysiloxane blocks are connected to an arylate ester unit, a aromatic carbonate unit, or both an arylate ester unit and a aromatic carbonate unit, and wherein the siloxane units of the polysiloxane block are present in an amount of 0.2 to 10 wt % based on the weight of the copolymer composition, and wherein a molded article having a thickness of 3.2±0.12 millimeters, and consisting of the copolymer composition, has a percent transmittance of greater than or equal to 70%, according to ASTM D1003-00.