Patent ID: 7649032

Claim:
A polycarbonate composition comprising a polycarbonate-polysiloxane copolymer resin and a metal oxide-coated glass platelet additive wherein the polycarbonate-polysiloxane copolymer resin has a silicone content in the range of from more than 3.5 weight % to 7 weight % based on the total weight of the polycarbonate composition, the polycarbonate-polysiloxane copolymer has a haze of less than 10%, the glass flake additive is present in the range of 0.35 weight % to 0.70 weight % based on the total weight of the polycarbonate composition, and wherein the silicone content and glass flake additive weight are sufficient such that the composition is at least 40% ductile at −20° C., and wherein the polycarbonate-polysiloxane resin is produced from a polysiloxane of structure 1: wherein each R may be the same or different and is selected from the group of radicals consisting of hydrogen, halogen, C (1-8) alkoxy, C (1-8) alkyl and C (6-13) aryl, R 1 is a C (2-8) divalent aliphatic radical, R 2 is selected from the same or different C (1-13) monovalent organic radicals, and n is an integer greater than or equal to 20 to 100.