Flame retardant bio-based polymer blends

摘要

Polycarbonate compositions having flame retardant properties and improved impact resistance are disclosed, together with methods for preparing the same.

主权项

1. A polycarbonate blend prepared using a polycarbonate precursor comprising a biosourced isosorbide, the polycarbonate blend further comprising:
a. a phosphorus containing flame retardant composition; and b. an impact modifier comprising a combination of a polysiloxane-polycarbonate copolymer and a silicone elastomer core-acrylic shell impact modifier,wherein the polycarbonate blend has a notched izod impact rating of at least about 60% higher than a notched izod impact rating of a reference polycarbonate blend prepared using the polycarbonate precursor comprising the biosourced isosorbide, the reference polycarbonate blend further comprising the phosphorus containing flame retardant composition and an impact modifier consisting of either the polysiloxane-polycarbonate copolymer or the silicone elastomer core-acrylic shell impact modifier.