Invention Grant
- Patent Title: Process for preparation of menthol by hydrogenation of isopulegol
- Patent Title (中): 通过异丙醇氢化制备薄荷醇的方法
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Application No.: US12670328Application Date: 2008-07-16
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Publication No.: US07960593B2Publication Date: 2011-06-14
- Inventor: Gabriele Gralla , Gunnar Heydrich , Eike Johannes Bergner , Klaus Ebel
- Applicant: Gabriele Gralla , Gunnar Heydrich , Eike Johannes Bergner , Klaus Ebel
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Connolly Bove Lodge & Hutz LLP
- Priority: EP07112951 20070723
- International Application: PCT/EP2008/059277 WO 20080716
- International Announcement: WO2009/013192 WO 20090129
- Main IPC: C07C29/00
- IPC: C07C29/00 ; C07C35/12
Abstract:
The present invention relates to a process for preparing racemic or optically active menthol by catalytically hydrogenating racemic or optically active isopulegol in the presence of hydrogen and catalysts which comprise nickel-, copper-, zirconium- and molybdenum-containing compounds. The present invention relates specifically to a corresponding process far continuously catalytically hydrogenating L-isopulegol to L-menthol.
Public/Granted literature
- US20100191021A1 PROCESS FOR PREPARATION OF MENTHOL BY HYDROGENATION OF ISOPULEGOL Public/Granted day:2010-07-29
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