发明名称 |
Process for forming end capped polyamic acids polyimides |
摘要 |
This invention discloses a process where a portion of an amine terminated polyamic acid intermediate is end-capped with an aromatic monoanhydride additionally substituted with a free carboxylic acid and a carboxylic ester. The polyamic acids of this invention are readily converted to high molecular weight polyimides.
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申请公布号 |
US4973661(A) |
申请公布日期 |
1990.11.27 |
申请号 |
US19890357237 |
申请日期 |
1989.05.26 |
申请人 |
ETHYL CORPORATION |
发明人 |
LEE, BURNELL;LI, HSUEH M. |
分类号 |
C08G73/10 |
主分类号 |
C08G73/10 |
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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