THERMOPLASTIC RESIN COMPOSITIONS

摘要

The thermoplastic resin comprises the alpha-methyl styrene-acrylonitrile random copolymer(A), diene rubber-aromatic vinyl-vinyl acetate graft copolymer(B) and polycaprolactam resin(C). The copolymer(A) is obtained by polymerization of alpha-methyl styrene and acrylonitrile at 60 deg. C for 4 hours. The graft copolymer(B) is obtained by graft polymerization of the mixts. of styrene and acrylonitrile monomer in the presence of polybutadiene rubber polymer. The polycaprolactam(C) is added to the polymer(A) and (B) and the mixts. is extruded by the twin extruder to obtain the pellet. This thermoplastic resin pellet shows the excellent fluid characteristics and property balance of heat-resistance and impact-resistance. This well-balanced characteristic property is derived from the introduction of polycaprolactam resin having good fluid characteristics and compatibility with ABS resin.