发明名称 |
Readily curable fluorocarbon ether bibenzoxazole polymers |
摘要 |
Thermooxidatively and hydrolytically stable perfluoroalkylene ether bibenzoxazole polymers containing hydrocarbon cure sites are synthesized by the polycondensation of a fluorocarbon bis(o-aminophenol) containing a hydrocarbon moiety and a perfluoroalkylene ether diimidate or dithioimidate ester. The polymers are readily curable to elastomers that are resistant to hydrolysis over a wide use-temperature range. Thus, the polymers are especially suitable for use in aerospace applications where extreme environments are encountered. In particular, the polymers are useful as seals, sealants, and the like.
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申请公布号 |
US4142037(A) |
申请公布日期 |
1979.02.27 |
申请号 |
US19770863026 |
申请日期 |
1977.12.21 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE AIR FORCE |
发明人 |
EVERS, ROBERT C.;ABRAHAM, TONSON |
分类号 |
C08G73/22;(IPC1-7):C08G65/40 |
主分类号 |
C08G73/22 |
代理机构 |
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代理人 |
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地址 |
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