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US5430121A Thermoplastic polyurethanes modified by siloxane block copolymers 失效
通过硅氧烷嵌段共聚物改性的热塑性聚氨酯

Thermoplastic polyurethanes modified by siloxane block copolymers
摘要:
The invention relates to thermoplastic polyurethanes modified with segmented siloxane block copolymers which are based on relatively high molecular weight dihydroxy compounds, diisocyanates, and difunctional chain extenders. The application also relates to their use in the medical field, and particularly as a catheter material.
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