| abstract |
A polypropylene composition which is inexpensive, has excellent suitability for embossing, and is suitable for use as various skin materials and interior materials. The composition comprises: a propylene block copolymer comprising crystalline polypropylene and a propylene/α-olefin copolymer; and at least either of a synthetic olefin rubber ingredient and a synthetic styrene rubber ingredient. The intrinsic viscosity of the copolymer, [θ]RC, is 6.5 dl/g or lower, the ratio of the intrinsic viscosity of the copolymer to that of the crystalline polypropylene, [θ]RC/[θ]PP, is from 0.5 to 1.3, and the product of that ratio and the weight ratio of the polypropylene to the copolymer, ([θ]RC/[θ]PP)x(Wpp/WRC), is from 0.2 to 4.5. The ratio of the melt flow rate of the rubber ingredient(s) to that of the polypropylene, [MFR]TR/[MFR]PP, is from 0.3 to 80. |