Patent ID: 7695815
Filing Date: 2010-04-13
Classification: B32B,C08K,C08L,Y10T

Abstract:
1. A laminate comprising: a first layer; and a second layer; wherein the first layer comprises a first thermoplastic composition comprising a polycarbonate; a polycarbonate-polysiloxane copolymer; an impact modifier; and a polyetherimide; wherein the polycarbonate comprises greater than or equal to about 50% by weight of the combined weights of the polycarbonate, polycarbonate-polysiloxane copolymer, impact modifier and polyetherimide in the first thermoplastic composition; wherein a 3.2 millimeter thick, 7.6 centimeter square sample of the first thermoplastic composition produces a smoke density (Ds) of less than 275 after a 4-minute burn, measured according to ASTM L 662-03; and wherein a 3.2-mm thick molded NII bar comprising the first thermoplastic composition has a notched Izod impact strength of greater than or equal to about 150 J/m, determined in accordance with ASTM D256-05 (method A) at 23° C., wherein the second layer comprises a second composition different from the composition of the first thermoplastic composition.