| 摘要 |
PROBLEM TO BE SOLVED: To provide a propylene-based resin composition for medical use good in mold processability during injection molding, excellent in a balance of rigidity and impact resistance and transparency, especially excellent in impact resistance and low elution property after radiation sterilization and satisfying 6 chemical requirements described in JIS T3210:2011 Sterilized Injection Tube or a heavy metal test, a lead test, a cadmium test, an eluate test described in Pharmaceutical 494, dialysis Type Artificial Kidney Apparatus Approval Standard IV Quality and Test Method of Blood Circuit and an injection molded article obtained by using the same.SOLUTION: There is provided a propylene-based resin composition for medical use, containing 100 pts.wt. of a propylene resin consisting of (A) a propylene (co)polymer which is a propylene single polymer polymerized by a Ziegler Natta catalyst or a propylene copolymer consisting of propylene and α-olefin with the content of less than 1 wt.% and having melt flow rate according to JIS K7210 (230°C, 2.16 kg load) of 0.5 to 100 g/10 min. of 60 to 99 pts.wt. and (B) a propylene-ethylene block copolymer polymerized by the Ziegler Natta catalyst and satisfying properties of (B-i) to (B-iv) of 1 to 40 pts.wt. and 0.005 to 0.6 pts.wt. of a nucleating agent and used by a radiation sterilization treatment.SELECTED DRAWING: None |
