BLENDS BASED ON STYRENIC COPOLYMERS ENDOWED WITH IMPROVED CHARACTERISTICS OF IMPACT STRENGTH AT LOW TEMPERATURES

摘要

A blend based on a styrene copolymer and having improved impact strength at low temperatures, the blend comprising an impact-resistant styrene copolymer, an aromatic polyester and an aromatic polycarbonate, characterized in that the amount of aromatic polycarbonate is less than 7 % by weight. The blend preferably comprises: (a) from 55 to 90 % by weight of an impact resistant styrene copolymer derived from 2 to 35 % by weight of an ethylenically usaturated nitrile, from 15 to 50 % by weight of an olefinic elastomer and from 73 to 15 % by weight of a styrene monomer; (b) less than 7 % by weight of the total blend, of an aromatic polycarbonate, and (c) at least 3 % by weight of an aromatic polyester.