Polymer blends of polycarbonate-polysiloxane block copolymers with polycarbonates and polyestercarbonate copolymers

摘要

New thermoplastic blends are provided, comprising (A) a block copolymer having a polysiloxane block of the structure : where R¹, R², Y and D are as herein defined, and a polycarbonate block, and (B), an aromatic carbonate polymer. These blends have processing, low temperature impact strength and flammability advantages.