发明名称 |
BIOSTABLE SEGMENTED ALIPHATIC POLYURETHANES AND PROCESS THEREFOR |
摘要 |
BIOSTABLE, SEGMENTED ALIPHATIC POLYURETHANES AND PROCESS THEREFOR Highly stable, segmented, aliphatic polyurethanes prepared by particular processes are disclosed. The segmented polyurethanes of this invention are substantially free of ester and ether linkages and are found to be particularly hydrolytically and oxidatively stable. The polyurethanes of this invention are prepared by a particular two stage process involving the formation of a prepolymer and subsequent reaction with simultaneously or sequentially added diisocyanate and diol monomers. |
申请公布号 |
CA1313280(C) |
申请公布日期 |
1993.01.26 |
申请号 |
CA19890614347 |
申请日期 |
1989.09.28 |
申请人 |
MEDTRONIC, INC. |
发明人 |
COURY, ARTHUR J.;HOBOT, CHRISTOPHER M.;CARLSON, KURT |
分类号 |
A61L27/00;C08G18/10;C08G18/32;C08G18/38;C08G18/65;C08G18/66;C08G18/73;C08G18/75 |
主分类号 |
A61L27/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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