POLYPROPYLENE RESIN COMPOSITION

摘要

PURPOSE:To provide a polypropylene resin compsn. which comprises polypropylene, polystyrene, and a compatibilizer and has a good foamability by carbon dioxide. CONSTITUTION:This resin compsn. is prepd. by compounding 100 pts.wt. resin component comprising 51-95 pts.wt. propylene-alpha-olefin random copolymer having an alpha-olefin (except propylene) content of 1-10wt.% and 49-5 pts.wt. polystyenic resin with 2-30 pts.wt. hydrogenated block copolymer which is obtd. by hydrogenating at least 70% of ethylenic double bonds of a block copolymer having at least one arom. vinyl polymer block and at least one conjugated diene polymer block.