发明名称 |
Thermoplastic hydrogels |
摘要 |
Thermoplastic hydrogels are prepared by making condensation polymers of spirolactones of the formula: <IMAGE> with a difunctional compound capable of opening the lactone rings. The thermoplastic hydrogels can be cross-linked. In the formula the total of n and m and also of n' and m' is 2 to 5 and the R groups are H or hydrocarbyl with not over 3 R groups being hydrocarbyl. Most preferably all R groups are H and n, m, n' and m' are all 1.
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申请公布号 |
US4064086(A) |
申请公布日期 |
1977.12.20 |
申请号 |
US19760704888 |
申请日期 |
1976.07.13 |
申请人 |
NATIONAL PATENT DEVELOPMENT CORPORATION |
发明人 |
COWSAR, DONALD ROY;TANQUARY, ALBERT CHARLES |
分类号 |
C08G69/02;(IPC1-7):C08G63/08 |
主分类号 |
C08G69/02 |
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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