发明名称 |
Polyaromatic ether-keto-sulfones and their synthesis |
摘要 |
Polymers having pendant phenylethynyl groups are obtained by reacting phenylacetylene with a bromine-containing polymer prepared by reacting bis-p-phenoxy-4,4'-(2,2'-dibromodiphenyl)ketone or 2,2'-dibromodiphenyl-4,4'-dicarbonyldichloride with isophthaloyl dichloride and 4,4'-bis-p-phenoxydiphenylsulfone. Because the polymers cure without the evolution of volatiles and have softening points higher than their cure temperatures, they are especially suitable for use in fabricating fiber-reinforced composites.
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申请公布号 |
US4252937(A) |
申请公布日期 |
1981.02.24 |
申请号 |
US19790047528 |
申请日期 |
1979.06.08 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE AIR FORCE |
发明人 |
MARVEL, CARL S.;FRENTZEL, RICHARD L. |
分类号 |
C08G61/12;C08G75/23;(IPC1-7):C08G65/40 |
主分类号 |
C08G61/12 |
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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