发明名称 |
Verfahren zur Hydrolysierung von Alkyldicarboxylaten |
摘要 |
The present invention consists of a process for the preparation of carboxylic acid by hydrolysis, in the liquid phase, of a C1-C4 alkyl aliphatic dicarboxylate, characterised in that a mixture of the said alkyl dicarboxylate and of water is subjected to a reactive distillation, by introduction of the said mixture into the middle part of a column containing a gel-type resin, containing sulphonic acid groups, maintained in place using a support and having the following characteristics: … … - a skeleton based on styrene and divinylbenzene, the divinylbenzene content by weight with respect to the total weight of the said skeleton being between 1% and 12%, … - an exchange capacity of 3 to 6.5 milliequivalents of H<+>/gram of dry resin, … and by continuous distillation of the alkanol formed by the hydrolysis reaction. |
申请公布号 |
DE69308929(T2) |
申请公布日期 |
1997.09.11 |
申请号 |
DE1993608929T |
申请日期 |
1993.05.07 |
申请人 |
RHONE-POULENC FIBER & RESIN INTERMEDIATES, COURBEVOIE, FR |
发明人 |
BERROD, GERARD, F-69100 VILLEURBANNE, FR;GRILLON, ERIC, F-58500 ARMES, FR;KLINGER, FRANCOIS, F-CHAPONOST, FR |
分类号 |
C07B61/00;C07C27/02;C07C51/09;C07C55/02;C07C55/14;C07C57/13 |
主分类号 |
C07B61/00 |
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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