发明名称 |
Method of preparation of polyimide acids |
摘要 |
A one-step solution technique for preparing an aromatic polyimide acid which comprises reacting an aromatic dianhydride with an aromatic diamine in the presence of diglyme and a sufficient amount of a co-solvent to maintain the polyimide acid in solution, said co-solvent having the formula: ROH where R is H, an aliphatic branched or straight-chain hydrocarbon having from 1 to 5 carbon atoms or a methoxy substituted aliphatic branched or straight-chain hydrocarbon having from 1 to 5 carbon atoms.
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申请公布号 |
US4535115(A) |
申请公布日期 |
1985.08.13 |
申请号 |
US19840642519 |
申请日期 |
1984.08.20 |
申请人 |
GULF OIL CORPORATION |
发明人 |
BAKSHI, KIRAN R.;BARIE, WALTER P.;SABOURIN, EDWARD T. |
分类号 |
C08G73/00;C08G73/10;C08L79/08;(IPC1-7):C08L79/08 |
主分类号 |
C08G73/00 |
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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