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:
Oct. 16, 2018
Filed:
Nov. 12, 2015
Applicant:
Haldor Topsøe A/s, Kgs. Lyngby, DK;
Inventors:
Irantzu Sadaba Zubiri, Frederiksberg, DK;
Esben Taarning, Frederiksberg, DK;
Assignee:
Haldor Topsoe A/S, Lyngby, DK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 319/18 (2006.01); C07C 69/732 (2006.01); C07C 69/68 (2006.01); C07C 67/47 (2006.01); C07C 67/44 (2006.01); C07C 67/475 (2006.01);
U.S. Cl.
CPC ...
C07C 319/18 (2013.01); C07C 67/44 (2013.01); C07C 67/475 (2013.01); C07C 69/68 (2013.01); C07C 69/732 (2013.01);
Abstract
A continuous flow process for the preparation of one or more esters of lactic acid and 2-hydroxy-3-butenoic acid or α-hydroxy methionine analogs from a sugar in the presence of a solid Lewis acid catalyst and a solvent comprising an organic solvent and water. The invention provides a means for stabilizing a Lewis acid catalyst for use in a continuous reaction process wherein the water is present in an amount of up to or equal to 10 vol. % of the organic solvent.