POLYCARBONATE BLEND WITH LOW SMOKE GENERATION

摘要

The present invention provides a polycarbonate composition which contains polycarbonate, a thermoplastic polyester, a graft copolymer, polylactic acid. The inventive composition exhibits low smoke generation.

主权项

1. A thermoplastic molding composition comprising:
A) 50 to 98 parts by weight (pbw) aromatic poly(ester)carbonate having a weight-average molecular weight of at least 25,000; B) 1 to 30 parts by weight of thermoplastic polyester; C) 1 to 20 parts per hundred parts resin (phr) of graft (co)polymer having a core-shell morphology, including a grafted shell that contains polymerized alkyl(meth)acrylate and a composite rubber core that contains interpenetrated and inseparable polyorganosiloxane and poly(meth)alkyl acrylate components, wherein said core is in the form of particles having median particle size of 0.05 to 5 microns and glass transition temperature below 0° C., and wherein weight ratio of polyorganosiloxane/poly(meth)alkylacrylate/rigid shell is 70-90/5-15/5-15; and D) 1 to 30 parts by weight of polylactic acid.