| 发明名称 |
ETERBUNDNA ARYLTETRAKARBOXYLSYRADIANHYDRIDER TILL ANVENDNING VID FRAMSTELLNING AV POLYIMIDER SAMT FORFARINGSSETT FOR FRAMSTELLNING AV DIANHYDRIDERNA |
| 摘要 |
Novel dianhydrides having the formula: O-Rf-O wherein Rf is a perfluoroalkylene having the structure -CF2-n or a perfluoroalkylene ether having the structure -CF2-m-O--CF2-m wherein n is an integer of 2 to 10, and m is an integer of 1 to 10. |
| 申请公布号 |
SE418859(B) |
申请公布日期 |
1981.06.29 |
| 申请号 |
SE19750007910 |
申请日期 |
1975.07.10 |
| 申请人 |
* NATIONAL AERONAUTICS AND SPACE ADMINISTRATION |
发明人 |
J A * WEBSTER |
| 分类号 |
C07D307/89;B01J31/00;C07B61/00;C07C37/045;C07C37/05;C07C65/24;C08G73/10;(IPC1-7):07D307/89;08G73/10 |
主分类号 |
C07D307/89 |
| 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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