发明公开
EP0675100A2 Preparation of alpha-beta-unsaturated c3-c6 carboxylic acids
失效
Herstellung von alpha-beta-ungesättigtenC3-C6-Carbonsäuren。
- 专利标题： Preparation of alpha-beta-unsaturated c3-c6 carboxylic acids
- 专利标题（中）： Herstellung von alpha-beta-ungesättigtenC3-C6-Carbonsäuren。
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申请号： EP95301386.9申请日： 1995-03-03
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公开(公告)号： EP0675100A2公开(公告)日： 1995-10-04
- 发明人: Bauer, William, Jr. , Mason, Robert Michael , Upmacis, Rita Karina
- 申请人： ROHM AND HAAS COMPANY
- 申请人地址： 100 Independence Mall West Philadelphia, Pennsylvania 19106-2399 US
- 专利权人： ROHM AND HAAS COMPANY
- 当前专利权人： ROHM AND HAAS COMPANY
- 当前专利权人地址： 100 Independence Mall West Philadelphia, Pennsylvania 19106-2399 US
- 代理机构： Tanner, James Percival
- 优先权： US219324 19940328
- 主分类号： C07C51/43
- IPC分类号： C07C51/43 ; C07C57/07
摘要：
The present invention provides a process for the preparation of an α,β-unsaturated C 3 -C 6 carboxylic acid of greater than 98% purity, which combines fractional distillation and melt crystallization procedures. One embodiment of the process of the invention is depicted schematically in Figure 1 wherein 1 represents a dehydrogenation reactor in which a C 3 -C 6 carboxylic acid is dehydrogenated to produce on α,β-unsaturated C 3 -C 6 carboxylic acid, 3 represents a distillation unit and 6 represents a melt crystallizer.
公开/授权文献
- EP0675100B1 Preparation of alpha-beta-unsaturated C3-C6 carboxylic acids 公开/授权日：2001-06-13
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