发明申请
US20140158515A1 CONTINUOUS PROCESS FOR PREPARING MENTHOL IN PURE OR ENRICHED FORM
审中-公开
用于制备纯净或增强形式的MENTHOL的连续方法
- 专利标题： CONTINUOUS PROCESS FOR PREPARING MENTHOL IN PURE OR ENRICHED FORM
- 专利标题（中）： 用于制备纯净或增强形式的MENTHOL的连续方法
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申请号： US13790465申请日： 2013-03-08
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公开(公告)号： US20140158515A1公开(公告)日： 2014-06-12
- 发明人: Gunnar Heydrich , Gabriele Gralla , Klaus Ebel , Wolfgang Krause , Nawid Kashani-Shirazi
- 申请人： BASF SE
- 申请人地址： DE Ludwigshafen
- 专利权人： BASF SE
- 当前专利权人： BASF SE
- 当前专利权人地址： DE Ludwigshafen
- 优先权： EP07116155.8 20070911
- 主分类号： B01D3/14
- IPC分类号： B01D3/14 ; C07C29/80
摘要：
The present invention relates to a continuous process for preparing racemic or optically active menthol in pure or enriched form by distillatively separating menthol from substance mixtures which comprise essentially menthol and diastereomers thereof. This distillative separation is performed in a dividing wall column with 50 to 300 theoretical plates and one or more side draw points at an absolute operating pressure of 5 to 500 mbar.
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