| abstract |
To provide a propylene-based resin material having excellent mechanical properties and weld appearance, and having good surface quality even at a low injection pressure. A propylene / α-olefin random copolymer (a1) having a Q value of 2 to 5 and an isotactic triad fraction of 96% or more (a1), a propylene / α-olefin block copolymer. (A2) A propylene-based copolymer composition comprising 30 to 80% by weight. Here, the propylene / α-olefin random copolymer (a1) is preferably polymerized with a metallocene catalyst, and the melting point (Tm) thereof is preferably 110 to 150 ° C. [Selection] Figure 1 |