Disclosed is a surface coating which is composed of a composition containing (a) 1-35% by weight of at least one of an aromatic diisocyanate, an aliphatic diisocyanate and an alicyclic diisocyanate, (b) 1-35% by weight of a tri- or more-functional polyol and (c) 30-98% by weight of a polyalkylene glycol and/or a monomethoxypolyalkylene glycol, or a composition containing a part of the components polymerized in advance as a prepolymer. Also disclosed is a coating liquid containing such a composition, a surface coating obtained by applying the coating liquid to a surface, and a medical device having the surface coating. The surface coating exhibits sufficient lubricity in wet state, while having excellent durability and high biological safety.
本发明公开了一种表面涂层,它由以下成分组成:(a) 1-35%(按重量计)的芳香族二
异氰酸酯、脂肪族二
异氰酸酯和脂环族二
异氰酸酯中的至少一种;(b) 1-35%(按重量计)的三官能团多元醇;(c) 30-98%(按重量计)的聚亚烷基二醇和/或单甲氧基聚亚烷基二醇,或含有预先聚合成预聚物的部分成分的组合物。此外,还公开了一种含有这种组合物的涂布液、一种通过将涂布液涂布到表面而获得的表面涂层,以及一种具有该表面涂层的医疗设备。该表面涂层在湿润状态下具有足够的润滑性,同时具有出色的耐久性和较高的
生物安全性。