| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject composition useful as an electric part, an automobile part, etc., excellent in rigidity, hardness, heat resistance, wear resistance and high-speed moldability, by adding a specific nucleus forming agent and a prescribed lubricant to a specified polypropylene resin. SOLUTION: This composition is obtained by blending (A) 100 pts.wt. of a polypropylene consisting essentially of a high crystalline propylene homopolymer having 0.5-300g/10 minutes melt flow rate(MFR) in which a melt quantity of heat (ΔHm) and MFR satisfy the relation of the equationΔHm>=24.5+1.583logMFR with (B) 0.01-5 pts.wt. of a nucleus forming agent which is a compound or a metal benzoate of the formula (R<1> is a direct bond, S, a 1-9C alkylene or alkylidene; R<2> and R<3> are each H or a 1-8C alkyl; M<1> is a monovalent to trivalent metal; (n) is the valence of M<1> ) and (C) 0.01-1 pt.wt. of a lubricant which is a metal aliphatic carboxylate.
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