| 摘要 |
PROBLEM TO BE SOLVED: To provide a polypropylene-based resin composition excellent in rigidity and impact resistance, especially in falling weight impact strength, and to provide a molded body comprising the same. SOLUTION: The polypropylene-based resin composition comprises a propylene-based polymer component (I) having intrinsic viscosity of 0.1-5 dL/g and an isotactic pentad fraction of≥0.98 and a component (II) which is obtained by copolymerizing a monomer selected from ethylene and a 4-12Cα-olefin, and propylene, has intrinsic viscosity of 1-20 dL/g, and has a content of the selected monomer of 1-80 wt.%. The polypropylene-based resin composition contains a propylene-based block copolymer (A) containing 1-70 wt.% of the component (II) and 0.001-5 pts.wt. of a nucleating agent (B) containing <5 wt.% of particles having an average particle diameter of 0.01-3μm when measured by a laser diffraction type measuring method, and having a particle diameter of≥10μm, relative to 100 pts.wt. of the copolymer (A). COPYRIGHT: (C)2006,JPO&NCIPI
|
