| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject composition practical in terms of cost, moldability, or the like, having excellent anti-thrombogenicity, useful as a material to be brought into contact with blood by making the composition include a small amount of a specific polyether/polyaryl ether sulfone-based copolymer. SOLUTION: This composition comprises (A) 1-50 pts.wt. of a polyalkylether/ polyether copolymer substantially composed of repeating units of formula I to formula III [X is SO2; Ar1 to Ar4 are each a (nucleus-substituted) 6-30C bifunctional hydrocarbon group; Y is a (substituted) 1-13C bifunctional hydrocarbon or the like; R is a 2-3C alkylene; (k) is the number of repeating units to make the molecular weight of polyoxyalkylene structure 2,000-20,000], having the weight ratio of unit content of formula III to the total of units of formula I to formula III of 10-90 wt.%, >=0.5 reduced viscosity (measured 1.2 g/dl concentration at 35 deg.C) and 9.0-10.4 solubility parameter and (B) 99-50 pts.wt. of a rubber-based elastomer. |
