| 摘要 |
PROBLEM TO BE SOLVED: To provide a propylene polymer composition which has excellent moldability and can give an automotive interior materiel excellent in hardness, rigidity and impact strength by mixing a specified propylene block copolymer with a specified ethylene/1-octene random copolymer and talc. SOLUTION: This propylene polymer composition for an automotive interior materiel comprises 53-61wt.% propylene block copolymer having an MFR of 50-400g/10min, an [η] of 5-10dl/g, containing 3-13wt.% component soluble in n-decane at ordinary temperature and having an MFR of the propylene component of 60-450g/10min and an Is of 0.97 or above, 21-25wt.% ethylene/1-octene random copolymer [B] having a content of 1-octene units of 7-15mol%, an [η]of 1.5-3.5dl/g, a Tg of-50 deg.C or below, and a Tm of 90 deg.C or below and 18-22wt.% talc. The composition has an MFR of 28g/10min or above, and FM of 25,000kg/cm<2> or above, an IZ of 20kg.cm/cm or above and an R scale of 85 or above and gives an injection molding having crystallites of 5-20nm indirections of the (c) and (a) axes.
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