Patent ID: 7649057
Filing Date: 2010-01-19
Classification: C08L

Abstract:
1. A thermoplastic composition comprising a resin composition consisting essentially of: from 55 to 70 wt. % of a polycarbonate; from 8 to 20 wt. % of an impact modifier comprising an elastomer-modified graft copolymer comprising (i) an elastomeric polymer substrate having a Tg less than 10° C. and (ii) a rigid polymeric superstrate grafted to the elastomeric polymer substrate; from 15 to 25 wt. % of an aromatic vinyl copolymer; and from 3 to 8 wt. % of a polyorganosiloxane, based on the combined weights of the polycarbonate, impact modifier, aromatic vinyl copolymer, and polyorganosiloxane; wherein the aromatic vinyl copolymer comprises ungrafted SAN; and wherein the thermoplastic composition has a surface gloss level of less than 65 when measured on a smooth surface according to ASTM D2457 at 60° using a Gardner Gloss Meter and 3 millimeter color chips.