| 发明名称 |
Rigid rod aromatic benzthiazole/oxazole heterocyclic polymer |
| 摘要 |
There are provided aromatic heterocyclic polymers having repeating units of the formula <IMAGE> wherein R1 is -H or <IMAGE> R2 is <IMAGE> R3 is <IMAGE> and R4 is R2 or <IMAGE> and B is <IMAGE> wherein X is -S-, -O-, or -NH-.
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| 申请公布号 |
US4960854(A) |
申请公布日期 |
1990.10.02 |
| 申请号 |
US19890411769 |
申请日期 |
1989.09.25 |
| 申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE AIR FORCE |
发明人 |
ARNOLD, FRED E.;BURKETT, JERRY L. |
| 分类号 |
C08G75/32 |
主分类号 |
C08G75/32 |
| 代理机构 |
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代理人 |
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