发明名称 |
CONTINUOUS PROCESS FOR PREPARING MENTHOL IN PURE OR ENRICHED FORM |
摘要 |
<p>Continuous process for the preparation of racemic or optically active menthol in a pure and enriched form, comprises distillative separation of racemic or optically active menthol from a material mixture containing racemic or optically active menthol and its diastereomer, where the distillative separation process takes place in a partition column with 50-300 theoretical separation steps and one or more side exhaust position, in an absolute working pressure of 5-500 mbar.</p> |
申请公布号 |
EP2200961(A1) |
申请公布日期 |
2010.06.30 |
申请号 |
EP20080786349 |
申请日期 |
2008.07.23 |
申请人 |
BASF SE |
发明人 |
HEYDRICH, GUNNAR;GRALLA, GABRIELE;EBEL, KLAUS;KRAUSE, WOLFGANG;KASHANI-SHIRAZI, NAWID |
分类号 |
C07C29/80;B01D3/14;B01J19/00;C07C35/12 |
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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