| 摘要 |
PROBLEM TO BE SOLVED: To provide a polypropylene resin compsn. which exhibits a batter balance among physical properties in many applications than usually used various polypropylene resin compsns. having excellent physical properties. SOLUTION: This compsn, comprises 100 pts.wt. propylene homopolymrr having a mesopentad fraction of 0.970 or higher or propylene-ethylene block copolymer having a mesopented fraction in the polypropylene blocks of 0.970 or higher. 0.1-20 pts.wt. propylene-ethylene copolymer wherein, when attention of paid to three consecutive monomer units, the fraction of chains having at least three linked propylene units is 0.40 or higher and the fraction of chains having at least three linked ethylene units is 0.30 or higher, and 0-140 pts.wt. ethylene-α-olefin random copolymer having an entylene content of 20-90wt.%.
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