发明名称 |
PROCESS FOR THE SEPARATION OF MIXTURES OF ISOMERES FROM 1,3- AND 1,4-BIS-(2-HYDROXYHEXAFLUORO-2-PROPYL)-BENZENE |
摘要 |
<p>Isomer mixtures of 1,3- and 1,4-bis-(2-hydroxyhexafluoroprop-2-yl)-benzene are separated by a steam distillation in the presence of CS2. On cooling of the steam distillate, a solid precipitates which is composed mainly of the 1,4-isomer. After the solid has been separated off, an aqueous-organic liquid-phase mixture remains, the organic phase of which mainly contains the 1,3-isomer. The pure isomers are obtained by recrystallization or distillation respectively. These are mainly intermediates in the polymer field.</p> |
申请公布号 |
EP0254219(B1) |
申请公布日期 |
1990.11.22 |
申请号 |
EP19870110348 |
申请日期 |
1987.07.17 |
申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
SCHNEIDER, KLAUS-ALBERT, DR.;SIEGEMUND, GUENTER, DR. |
分类号 |
C07C29/80;C07C27/00;C07C29/84;C07C33/46;C07C67/00 |
主分类号 |
C07C29/80 |
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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