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US4948860A Melt processable polyurethaneurea copolymers and method for their preparation 失效
熔融加工聚氨酯脲共聚物及其制备方法

Melt processable polyurethaneurea copolymers and method for their
preparation
摘要:
Melt processable polyurethaneureas are prepared from a diisocyanate, a macroglycol, a diol chain extender and a diamine chain extender. Water may be included as a reactant, and the polymer may contain an additive such as a radiopaque material. The invention includes a one-pot bulk polymerization method for preparation of the polymers.
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