| 发明名称 |
Process for the preparation of 4,4'-bis(carboxybenzoyl)diphenyl ethers |
| 摘要 |
4,4'-Bis(carboxybenzoyl)diphenyl ethers can be prepared from diphenyl ether and iso- or terephthalic dichloride, but oligomeric dicarboxylic acids are also obtained in this process. Oxidation of compounds of the structure <IMAGE> allows 4,4'-bis(carboxybenzoyl)diphenyl ethers to be prepared in high purity and high yields. Preparation of 4,4'-bis(carboxybenzoyl)diphenyl ethers.
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| 申请公布号 |
DE3811067(C1) |
申请公布日期 |
1989.11.02 |
| 申请号 |
DE19883811067 |
申请日期 |
1988.03.31 |
| 申请人 |
HUELS AG, 4370 MARL, DE |
发明人 |
POLL, HEINZ-GUENTER, DR., 4000 DUESSELDORF, DE;GAHLMANN, KLAUS;FINKE, JUERGEN, DR., 4370 MARL, DE |
| 分类号 |
C07C51/265 |
主分类号 |
C07C51/265 |
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