| 摘要 |
PROBLEM TO BE SOLVED: To obtain an interior automotive trim such as instrument panel and door panel, having good appearance especially at the weld part and low gloss on a grain surface to enable the use without coating and enabling the control of the balance of impact resistance, rigidity, etc. SOLUTION: The objective interior automotive trim is produced by the injection molding of a polypropylene resin composition composed of (A) 50-100wt.% of a composition containing a crystalline polypropylene polymer which can be fractionated by temperature-raising fractionation into (a) a fraction soluble in o-dichlorobenzene(ODCB) at 30 deg.C, (b) a fraction soluble in ODCB at 30-105 deg.C and (c) a fraction insoluble in ODCB at 105 deg.C, wherein the intrinsic viscosity [η]of the component (a) is 2.0-10dL/g or over, the relaxation timeτof the component (c) is 0.01-0.35sec, the molecular weight distribution index (PDI) is 1-18, the weight ratio of (b)/[(b)+(c)] is 0-0.20 and the weight ratio of (a)/[(a)+(b)+(c)] is 0.03-0.35 and (B) 50-0wt.% of an inorganic filler. |
