REACTOR ALLOY OF SYNDIOTACTIC POLYSTYRENE HAVING HIGH IMPACT RESISTANCE

摘要

The reactor alloy of syndiotactic polystyrene according to the present invention is prepared by polymerizing vinyl aromatic monomer and rubbery elastomer and optionally polyphenylene ether under transition metal catalyst and cocatalyst, which comprises (a) 50-99 % by weight of syndiotactic polystyrene, (b) 1-50 % by weight of rubbery elastomer, and optionally (c) 0.1-10 % by weight of polyphenylene ether. The reactor alloy of the present invention has good dispersibility and high interfacial strength in comparison with a melt blend by polymerizing styrene monomer and rubbery elastomer for impact modifier. And the reactor alloy of the present invention is greatly enhanced in impact resistance in comparison with a melt blend same amount of rubber component as reactor alloy of the present invention without impairing heat resistance and elastic modulus by further comprising polyphenylene ether.