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. 06, 2004
Filed:
Sep. 09, 2002
Applicant:
Inventors:
Daniel Decker, Sulzbach, DE;
Guenter Roscher, Kelkheim, DE;
Christoph Mollenkopf, Frankfurt, DE;
Erwin Weiss, Hofheim, DE;
Stefan Purps, Koenigstein, DE;
Assignee:
Nutrinova Nutrition Specialties & Food Ingredients GmbH, Wiesbaden, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 5/710 ;
U.S. Cl.
CPC ...
C07C 5/710 ;
Abstract
The invention relates to a process for preparing sorbic acid by thermal cleavage in a solvent of the polyester prepared from crotonaldehyde and ketene, the cleavage of the polyester being carried out in the presence of 20 to 100% by weight of a secondary or tertiary aliphatic, alicyclic nitrogen- and/or oxygen-containing amine, or aliphatic-aromatic substituted amine, as catalyst.