Thermoplastic polycarbonate polyblends

摘要

Polyblend comprises (a) 80-20 wt.% of a thermoplastic polycarbonate based on bis-(hydroxyarl)alkanes; and (b) 20-8 wt.% of a methylmethacrylate/N-phenyl maleimide copolymer contg. 75-90 recurring units of methylmethacrylate monomer and 25-10 units of N-phenylmaleimide monomer. - The blend may comprise (b) and/or another copolymer which comprises 20-80 wt.% of an EPDM-g-methylmethacrylate/N-phenylmaleimide copolymer (c) which contains 60-40 recurring units of an EPDM having chemically grafted to it 40-60 of the methylmethacrylate/N-phenylmaleimide copolymer as in (b). When both copolymers are used in the blends, the amts. are 20-99 wt.% (c) and 1-80 wt.% (b).