Title:
純粋または富化形態のメントールの連続的方法
Document Type and Number:
Japanese Patent JP5468003
Kind Code:
B2
Abstract:
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.
Inventors:
Gunner Heidrich
Glaara, gabriele
Ebel, Claus
Krause, Wolfgang
Kasani-Shirazi, Navid
Glaara, gabriele
Ebel, Claus
Krause, Wolfgang
Kasani-Shirazi, Navid
Application Number:
JP2010523454A
Publication Date:
April 09, 2014
Filing Date:
July 23, 2008
Export Citation:
Assignee:
BASF SE
International Classes:
C07C29/80; C07C35/12; C07B57/00
Domestic Patent References:
| JP2002212121A | ||||
| JP2000334201A | ||||
| JP2003532720A | ||||
| JP8040959A |
Foreign References:
| WO2006056435A1 | ||||
| GB826281B | ||||
| US2662952 | ||||
| US4230533 |
Attorney, Agent or Firm:
Yusuke Hiraki
Satoshi Fujita
Eiichi Arai
Natsuo Tanaka
Satoshi Fujita
Eiichi Arai
Natsuo Tanaka