| abstract |
(57) [Summary] [Objective] To provide a polypropylene resin composition which is excellent in transparency and impact resistance and is suitable for containers and the like. A catalyst containing, as an essential component, a transition metal compound of Group IV of the periodic table containing (A) a propylene polymer (98 to 50% by weight) and (B) (a) a ligand having a cyclopentadienyl skeleton. (B) Density of 0.86 to 0.97, which is obtained by (co) polymerizing ethylene or ethylene and an α-olefin having 3 to 20 carbon atoms in the presence of g / cm 3 , (c) Melt flow rate 0.1 to 50 g / 10 minutes, (d) molecular weight distribution parameter Mw / Mn 1.5-5.0, (e) Composition distribution parameter Cb1. (D) with respect to 100 parts by weight of a resin component containing 2 to 50% by weight of an ethylene polymer or an ethylene / α-olefin copolymer having 2 or less, and (C) another 48% by weight of an ethylene polymer. Add 0.01 to 2 parts by weight of a nucleating agent. |