THERMOPLASTIC RESIN COMPOSITION WITH EXCELLENT IMPACT RESISTANCE

摘要

A thermoplastic resin composition having excellent impact resistance which comprises: (A) 1 to 30 parts by weight of a graft copolymer which is obtained by polymerizing in one or more steps 70 to 5 parts by weight of a monomer ingredient comprising 50 to 100 wt.% methyl methacrylate and 50 to 0 wt.% other vinyl monomer copolymerizable therewith in the presence of 30 to 95 parts by weight (on solid basis) of a butadiene rubber latex and in which the ratio of the average particle diameter of the graft copolymer obtained (b) to the average particle diameter of the butadiene rubber (a), i.e., (b)/(a), has been regulated to 2.9 or higher by conducting the graft polymerization while coagulating and enlarging the particles with a water−soluble electrolyte; and (B) 99 to 70 parts by weight of a thermoplastic resin.