| 摘要 |
PROBLEM TO BE SOLVED: To provide a propylene-ethylene random block copolymer having high fluidity suitable for injection molding and sufficient low bleedout and to provide a production method therefor.SOLUTION: There is provided a propylene-ethylene random block copolymer having an MFR (at 230°C and a load of 2.16 kg) of 30 to 200 g/10 min which is obtained by performing multistage polymerization using a metallocene catalyst, where the propylene-ethylene random block copolymer is composed of 70 to 90 wt.% of a crystalline copolymer component (A) insoluble in orthodichlorobenzene at 60°C and 10 to 30 wt.% of a low crystalline copolymer component (B) soluble in orthodichlorobenzene at 60°C and the crystalline copolymer component (A) and the low crystalline copolymer component (B) have characteristics such as a specific MFR. |
