发明名称 |
Imide nitrogen dibenzofurans polymers |
摘要 |
The present disclosure relates to a new composition of matter dibenzofuran-2,3,6,7,-tetracarboxylic acid dianhydride and polymers derived therefrom including polyamic acid or polyimide polymers formed from the reaction of the above dianhydride and a diamine. The claimed dianhydride finds use as an excellent cross-linking moiety. Condensation polymers derived from the dianhydride and diamines are useful in the production of films and fibers with good thermal stability.
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申请公布号 |
US4138392(A) |
申请公布日期 |
1979.02.06 |
申请号 |
US19770798335 |
申请日期 |
1977.05.19 |
申请人 |
STANDARD OIL COMPANY (INDIANA) |
发明人 |
PUSKAS, IMRE;FIELDS, ELLIS K. |
分类号 |
C07D307/91;C07D491/14;C07D493/14;C08G73/10;(IPC1-7):C08G73/10 |
主分类号 |
C07D307/91 |
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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