发明公开
- 专利标题： Process for the purification of carboxylic acids and/or their anhydrides
- 专利标题（中）： 用于纯化羧酸和/或其无机物的方法
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申请号： EP92308425.5申请日： 1992-09-16
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公开(公告)号： EP0535825A3公开(公告)日： 1994-06-01
- 发明人: Cooper, Jeremy Bernard, BP Chemicals Limited
- 申请人： BP Chemicals Limited
- 申请人地址： Britannic House 1 Finsbury Circus London EC2M 7BA GB
- 专利权人： BP Chemicals Limited
- 当前专利权人： BP Chemicals Limited
- 当前专利权人地址： Britannic House 1 Finsbury Circus London EC2M 7BA GB
- 代理机构： Perkins, Nicholas David
- 优先权： GB9120902 19911002
- 主分类号： C07C51/44
- IPC分类号： C07C51/44 ; C07C51/573
摘要：
A process for purifying an iodide-contaminated carboxylic acid and/or anhydride fraction obtained by liquid phase carbonylation using a carbonylation catalyst, an iodine-containing promoter and optional iodine-containing cop- romoter comprises vapourising the fraction after it has been freed of catalyst, feedstock and promoter components to produce a vapour acid and/or anhydride fraction having reduced iodide contamination.
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