| 摘要 |
PURPOSE:To obtain excellent slip easiness, durability and thrombus resistance by constituting a material of a component (A) having a tertiary amino radical and/or class 4 ammonium salt, component with a degree of polymerization having specific polyethylene oxide radical, hydrophobic property component and acid polysaccharide ion connected to the component (A). CONSTITUTION:A material consists of a component (A) having tertiary amino group and/or class 4 ammonium salt, component (B) having polyethylen oxide radical of 50 or more degree of polymerization, hydrophobic property component (C) and acid polysaccharide (D) ion connected to the component (A). In order to satisfy excellent slip easiness and durability, a copolymer is preferable being composed of the 5 to 20wt.% component (A), 20 to 50wt.% component (B) and the 30 to 75wt.% component (C) (where component in total=100%). As the component (A) and the ion bindable acid polysaccharide component (D), especially heparin or its derivative (heparinoid) is preferable in the point enabling even thrombus resistance to be given together with the slip easiness to the material. A rate of content of these acid polysaccharide in the copolymer is 1 to 50wt.% preferably 5 to 25wt.%. |
