Propylene polymer composition.

摘要

A propylene polymer composition comprises [A] 55-85% by weight of a propylene block copolymer containing 2-15 mol% ethylene units, having 5-15 mol% of a portion soluble in n-decane at ordinary temperature and a melt flow rate of 15-60 g/10 min, [B] 5-15% by weight of an ethylene-propylene copolymer rubber containing 70-90 mol% ethylene units having a melt flow rate of 0.1-2.0 g/10 min, [C] 5-15% by weight of an ethylene-propylene-diene copolymer rubber containing 70-90 mol% ethylene units , 8-13 mol% diene units, and having a melt flow rate of 0.1-0.4 g/10 min. [D] 8-20% by weight of an ethylene-butene-1 copolymer rubber containing 85-95 mol% ethylene units and having a melt flow rate of 1.0-10.0 g/10 min, and [E] 5-15% by weight of talc. 55