申请人:Commonwealth Scientific and Industrial Research Organisation
公开号:US05393858A1
公开(公告)日:1995-02-28
A polyurethane or polyurethane-urea elastomeric composition, characterized in that the composition is a reaction product of: (A) a soft segment macrodiol which is either: (i) a homopolymer represented by formula I, HO--[(CH.sub.2).sub.n O].sub.m --H I wherein n represents an integer greater than 5 and less than 13, m is a number such that the number average molecular weight of the compound of formula I falls in the range from 218 to 5000 and optionally at least one hydrogen atom represented in formula I is substituted by a C.sub.1 to C.sub.3 alkyl group or a halogen atom; (ii) a copolymer containing at least 25% by mass of repeating units --(CH.sub.2).sub.n O-- wherein n is as defined in formula I above; or (iii) mixture of macrodiols comprising greater than 10% of a macrodiol as defined in formula I above; (B ) an aliphatic or aromatic diisocyanate known in the art of polyurethane manufacture; and (C) optionally a chain extender. A biomaterial and a medical device which are composed wholly or partly of the polyurethane or polyurethane-urea elastomeric composition are also described.
一种聚氨酯或聚氨酯脲弹性组合物,其特征在于该组合物是以下反应产物:(A)软段宏二醇,其可以是:(i)由式I表示的均聚物,HO-[(CH.sub.2).sub.n O].sub.m-H I,其中n表示大于5且小于13的整数,m是一个数字,使得式I化合物的数平均分子量在218到5000之间,并且可选地,式I中表示的至少一个氢原子被C.sub.1到C.sub.3烷基或卤原子所取代;(ii)含有至少25%重复单元-(CH.sub.2).sub.n O-的共聚物,其中n如上述式I中定义;或(iii)包含大于10%的宏二醇混合物,其中包括如上述式I中定义的宏二醇;(B)在聚氨酯制造艺术中已知的脂肪族或芳香族二异氰酸酯;以及(C)可选的链延伸剂。还描述了由聚氨酯或聚氨酯脲弹性组合物完全或部分组成的生物材料和医疗器械。