| 摘要 |
PROBLEM TO BE SOLVED: To obtain a polypropylenic resin composition excellent in the balance between rigidity and impact resistance, by mixing a propylenic polymer with a specified ethylene (co)polymer, and a rubber. SOLUTION: This composition comprises a propylenic polymer, an ethylene (co)polymer satisfying the following requirements: (a) a density of 0.86-0.97g/cm<3> , (b) a melt flow rate(MFR) of 0.01-100g/10min, (c) a molecular weight distribution (Mw/Mn) of 1.5-4.5, (d) a compositional distribution parameter Cb of 2.00 or below, (e) X<2.0 when d-0.008×logMFR>=0.93, and X<9.8×10<3>×(0.9300-d+0.008×logMFR)<2> +2.0 when d-0.08×log MFR<0.93 (wherein X (wt.%) is the content of o-dichlorobenzene solubles at 25 deg.C, d is the density, and MFR is the melt flow rate), and (f) the elution temperature vs. eluate amount curve as determined by the continuous temperature-rising elution fractionation method(TREF) is multiomodal, and a rubber. |
