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:
Aug. 11, 2015
Filed:
Oct. 27, 2011
Applicants:
Ralf Krahwinkel, Langenfeld, DE;
Robert Markert, Leverkusen, DE;
Edwin Ritzer, Leverkusen, DE;
Erasmus Vogl, Qingdao, CN;
Inventors:
Ralf Krahwinkel, Langenfeld, DE;
Robert Markert, Leverkusen, DE;
Edwin Ritzer, Leverkusen, DE;
Erasmus Vogl, Qingdao, CN;
Assignee:
LANXESS DEUTSCHLAND GMBH, Cologne, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 51/56 (2006.01); A23L 3/3508 (2006.01); A23L 3/3517 (2006.01);
U.S. Cl.
CPC ...
C07C 51/56 (2013.01); A23L 3/3508 (2013.01); A23L 3/3517 (2013.01); C07B 2200/09 (2013.01);
Abstract
A method is described for the production of sorbic anhydride, in which alkali metal or alkaline earth metal salts of sorbic acid are reacted with phosgene in an inert organic solvent. In addition, use thereof as a preservative in foods, in particular drinks, is described.