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:
Apr. 12, 2016
Filed:
Jan. 14, 2014
Applicant:
Evonik Degussa Gmbh, Essen, DE;
Inventors:
Franz-Felix Kuppinger, Marl, DE;
Florian Klasovsky, Haltern am See, DE;
Alexander May, Seeheim-Jugenheim, DE;
Min-Zae Oh, Cologne, DE;
Assignee:
Evonik Degussa GmbH, Essen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07C 51/377 (2006.01); C08F 20/06 (2006.01);
U.S. Cl.
CPC ...
C07C 51/377 (2013.01); C08F 20/06 (2013.01);
Abstract
Method for producing acrylic acid by dehydration of a Chydroxycarboxylic acid, characterized in that dehydration is achieved by contacting, at a temperature of more than 150° C., the hydroxycarboxylic acid with a mixture which is liquid at this temperature and comprises at least one metal salt of a Chydroxycarboxylic acid, and water.