RESIN COMPOSITION FOR INJECTION MOLDING

摘要

PURPOSE: Provided is a resin composition for injection molding which has wood-like appearance and thus can be used as wood substitute, and which has the quality of plastics and improved injection moldability. CONSTITUTION: The resin composition comprises 10-50 wt% of polystyrene(GPPS), 5-45 wt% of butadiene-styrene(HIPS) resin, 1-60 wt% of ethylene-vinyl acetate copolymer resin, and 0.5-80 wt% of CaCO3. The polystyrene(GPPS) has molecular weight of 100,000-250,000. The butadiene-styrene(HIPS) resin comprises 10-40% of rubber having particle diameter of 1-5 micrometer. The ethylene-vinyl acetate copolymer resin comprises 1-30% of vinyl acetate, and has a specific gravity of 0.9-0.99 and a melt index of 0.2-30.