发明公开
EP0484122A2 Method for obtaining high-purity cinnamic acid
失效
Verfahren zur Gewinnung von hochreinerZinntsäure。
- 专利标题： Method for obtaining high-purity cinnamic acid
- 专利标题（中）： Verfahren zur Gewinnung von hochreinerZinntsäure。
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申请号： EP91310005.3申请日： 1991-10-30
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公开(公告)号： EP0484122A2公开(公告)日： 1992-05-06
- 发明人: Itoh, Hiroyuki , Kono, Yoshitsugu , Taneda, Ryoichi , Takaki, Usaji
- 申请人： MITSUI TOATSU CHEMICALS, Inc.
- 申请人地址： 2-5 Kasumigaseki 3-chome Chiyoda-Ku Tokyo 100 JP
- 专利权人： MITSUI TOATSU CHEMICALS, Inc.
- 当前专利权人： MITSUI TOATSU CHEMICALS, Inc.
- 当前专利权人地址： 2-5 Kasumigaseki 3-chome Chiyoda-Ku Tokyo 100 JP
- 代理机构： Stuart, Ian Alexander
- 优先权： JP291867/90 19901031; JP291868/90 19901031
- 主分类号： C07C51/487
- IPC分类号： C07C51/487 ; C07C51/47
摘要：
There is here disclosed a method for obtaining high-purity cinnamic acid containing less metals from crude cinnamic acid containing a metallic catalyst which is a mixture prepared by the synthetic reaction of a cinnamic acid ester. A disclosed purifying means is the combination of alkali hydrolysis, active carbon adsorption, solvent extraction and precipitation with an acid.
公开/授权文献
- EP0484122B1 Method for obtaining high-purity cinnamic acid 公开/授权日：1996-01-17
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