MALEIMIDE-alpha;-ALKYLSTYRENE-BASED HEAT-RESISTANT TETRAPOLYMER WITH LOW MOLTEN VISCOSITY AND CONTINUOUS BULK PROCESS FOR PRODUCING IT

摘要

A quaternary mass polymer based on maleimide-alpha-alkylstyrene is provided to realize excellent cost efficiency, low melt viscosity, heat resistance, high productivity, compatibility with other thermoplastic resins, moldability and producibility. A quaternary mass polymer comprises 5-60 wt% of an N-substituted maleimide, 10-70 wt% of an alpha-alkylstyrene monomer, 5-50 wt% of an unsaturated nitrile monomer, and 3-50 wt% of an aromatic vinyl monomer. The copolymer has a weight average molecular weight of 70000-300000, a glass transition temperature of 150-20 deg.C and a melt index of 10-200 Pa.s.