The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 14, 2011
Filed:
Jul. 16, 2008
Applicants:
Gabriele Gralla, Mannheim, DE;
Gunnar Heydrich, Limburgerhof, DE;
Eike Johannes Bergner, Hirschberg, DE;
Klaus Ebel, Lampertheim, DE;
Inventors:
Gabriele Gralla, Mannheim, DE;
Gunnar Heydrich, Limburgerhof, DE;
Eike Johannes Bergner, Hirschberg, DE;
Klaus Ebel, Lampertheim, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 29/00 (2006.01); C07C 35/12 (2006.01);
U.S. Cl.
CPC ...
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.