POLYPROPYLENE RESIN COMPOSITION

摘要

A polypropylene resin composition comprising: a polypropylene, 50~70% by weight; a polystyrene- ethylene/propylene-polystyrene tri-block copolymer containing 15-40% by weight styrene, 3~15% by weight; a polystyrene- ethylene/butene-polystyrene tri-block copolymer containing 15~40% by weight styrene, 3~15% by weight; and a talc, 10-30% by weight; wherein the proportion of the above-mentioned polystyrene-ethylene/propylene-polystyrene tri-block copolymer with respect to the total amount of the above-mentioned polystyrene-ethylene/propylene-polystyrene tri-block copolymer and the above-mentioned polystyrene-ethylene/butene-polystyrene tri-block copolymer is 20~80% by weight; is a material with a superior balance of physical properties, having high rigidity, superior impact resistance and tensile elongation, and in particular, being excellent for use as a material for solid molded articles such as parts for automobiles, and the like.