| abstract |
PROBLEM TO BE SOLVED: To provide a polypropylene resin composition which is lightweight, has extremely high rigidity and heat resistance, has excellent scratch resistance, has good fluidity at the time of molding, and has excellent moldability without cracking at the time of molding. And an injection-molded article comprising the resin composition. SOLUTION: The intrinsic viscosity [η] measured in decalin at 135 ° C. is 5 to 25% by weight of a high molecular weight polypropylene (A) having 6 to 11 dl / g, and the intrinsic viscosity [η] is 0.6 to 10%. 1.6 dl / g low molecular weight polypropylene (B) 95- A polypropylene resin composition containing 75% by weight and having the following characteristics <1> and <2>, and an injection-molded article comprising the resin composition. << 1 >> Isotactic pentad fraction (mmmm fraction) measured by 13 C-NMR is 96.5% or more. << 2 >> Gel permeation chromatography (GP The molecular weight distribution represented by Mw / Mn (weight average molecular weight / number average molecular weight) measured in C) is 8 or more. |