MEDICAL TOOL AND MOLDING MATERIAL THEREFOR

摘要

PROBLEM TO BE SOLVED: To improve flexibility, blood compatibility, heat resistance, a gas barrier property and a steam barrier property, and impart no agglutinating property. SOLUTION: This medical tool is composed of a composition containing (a) a block copolymer containing an isobutylene polymer segment and a vinyl aromatic compound polymer segment and (b) a specific thermoplastic resin. Here, the thermoplastic resin (b) is selected from a polyolefine resin and an ethylene-vinyl alcohol copolymer resin. The weight ratio of (a)/(b) is set in a range of 10/90 to 95/5.