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:
Jan. 11, 2011
Filed:
Aug. 15, 2006
Matthias Rauls, Ludwigshafen, DE;
Christoph Jaekel, Limburgerhof, DE;
Nawid Kashani-shirazi, Mannheim, DE;
Klaus Ebel, Lampertheim, DE;
Matthias Rauls, Ludwigshafen, DE;
Christoph Jaekel, Limburgerhof, DE;
Nawid Kashani-Shirazi, Mannheim, DE;
Klaus Ebel, Lampertheim, DE;
BASF SE, Ludwigshafen, DE;
Abstract
The present invention relates to a process for preparing enriched isopulegol by crystallization from a melt comprising isopulegol. The invention relates specifically to a process for preparing enantiomerically enriched n-isopulegol proceeding from optically active isopulegol having a relatively low enantiomeric excess by crystallization from the melt. The invention further relates to a process for preparing menthol proceeding from enantiomerically and/or diastereomerically enriched n-isopulegol prepared by crystallization from the melt.