Polypropylene-based resin composition of excellent moldability and giving molded product of excellent appearance

A polypropylene resin composition, comprising

• (A) 45 to 85 wt. %, based on the total weight of the composition, of a propylene/ethylene block copolymer, having a melt flow rate (MFR) of 100 g/10 min or more for the propylene homopolymer portion and 50 to 200 g/10 min for the total copolymer;
• (B) 0.5 to 20 wt. %, based on the total weight of the composition, of a propylene homopolymer having a weight-average molecular weight (Mw) of 20,000 to 80,000;
• (C) 5 to 35 wt. %, based on the total weight of the composition, of a polymer selected from the group consisting of an ethylene/α-olefin copolymer rubber, an ethylene/α-olefin/non-conjugated diene copolymer rubber, a hydrogenated block copolymer rubber and mixtures thereof, wherein said component (C) has an MFR of 0.1 to 20 g/10 min, and
• (D) 5 to 30 wt. %, based on the total weight of the composition, of talc having an average particle size of 10 μm or less, determined by the laser diffraction method.