| 摘要 |
PROBLEM TO BE SOLVED: To provide a polypropylene resin composition improved in rigidity, heat resistance, transparency and blanching resistance by mixing a propylene/ ethylene block copolymer, an alkali metal carboxylate, an alkali metalβ- diketonate or the like and a specified basic polyvalent metal salt of a cyclic organophosphoric ester. 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 the formula (wherein R1 is H or a 1-4C alkyl; R2 and R3 are each H or a 1-12C alkyl; and M is a metal atom of group III or IV in the periodic table or the like).
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