| 摘要 |
PROBLEM TO BE SOLVED: To provide a polypropylene resin composition improved in rigidity, heat resistance, etc., by mixing a propylene/ethylene block copolymer or the like, a specified basic polyvalent metal salt of a cyclic organophosphoric ester and a specified compound. SOLUTION: This polypropylene resin composition comprises 100 pts.wt. propylene/ethylene block copolymer composed of 95-70wt.% crystalline propylene polymer part and 5-30wt.% ethylene/propylene copolymer part and having properties such as an ethylene content of 3-22wt.% and a melt flow rate of 0.3-100g/10min, 0.01-5 pts.wt. at least one member selected from among alkali metal carboxylates, alkali metalβ-diketonates and alkali metalβ-ketoacetic ester salts and 0.01-5 pts.wt. at least one polyvalent metal salt of a cyclic organophosphoric ester, represented by formula I (wherein R1 is H or a 1-4C alkyl; R2 and R3 are each H or a 1-12 C alkyl; and M is a metal atom of group III or IV in the periodic table or the like) and 0.01-0.5 pts.wt. compound of formula II (wherein X is an anion; (n) is the valence of X; and (m) is 0-3).
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