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. 30, 2016
Filed:
Apr. 28, 2014
Applicants:
Alexander May, Seeheim-Jugenheim, DE;
Steffen Krill, Muehltal, DE;
Joerg Becker, Karlsruhe, DE;
Willi Ploesser, Seeheim-Jugenheim, DE;
Marcel Treskow, Darmstadt, DE;
Martin Koestner, Darmstadt, DE;
Inventors:
Alexander May, Seeheim-Jugenheim, DE;
Steffen Krill, Muehltal, DE;
Joerg Becker, Karlsruhe, DE;
Willi Ploesser, Seeheim-Jugenheim, DE;
Marcel Treskow, Darmstadt, DE;
Martin Koestner, Darmstadt, DE;
Assignee:
EVONIK ROEHM GmbH, Darmstadt, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07C 51/44 (2006.01); C07C 51/47 (2006.01); C07C 51/48 (2006.01); C07C 51/377 (2006.01); C07C 51/43 (2006.01);
U.S. Cl.
CPC ...
C07C 51/377 (2013.01); C07C 51/43 (2013.01); C07C 51/44 (2013.01); C07C 51/47 (2013.01); C07C 51/48 (2013.01);
Abstract
The present invention describes a process for preparing alpha-beta-unsaturated carboxylic acids by dehydration of hydroxycarboxylic or alkoxycarboxylic acids which are substituted in the alpha position, in particular 2-hydroxyisobutyric acid, while avoiding accumulation of by-products and additives.