PROCESS FOR THE PREPARATION OF STYRENIC THERMOPLASTIC RESIN HAVING MULTILAYER SKIN STRUCTURE

摘要

PURPOSE: A styrenic thermoplastic resin is prepared which has an excellent odor property and color stability. CONSTITUTION: Polystyrene resin is prepared by copolymerization of 35-90 weight % of unsaturated compound of nitrile monomer and aromatic vinyl monomer in the presence 10-65 weight % of rubber component such as polybutadiene rubber, styrene-butadiene rubber, acryliconitrile-butadiene rubber or acrylic rubber, which has a different multilayer skin structure in inner layer, intermediate layer and outer layer of the polymer chain by continuously changing composition rate of monomer.