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:
Feb. 02, 2021
Filed:
Nov. 11, 2016
Applicant:
Roehm Gmbh, Darmstadt, DE;
Inventors:
Alexander Lygin, Griesheim, DE;
Steffen Krill, Muehltal, DE;
Matthias Groemping, Darmstadt, DE;
Andreas Tepperis, Bad Koenig, DE;
Assignee:
Roehm GmbH, Darmstadt, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07C 67/39 (2006.01); B01J 37/02 (2006.01); B01J 37/06 (2006.01); B01J 37/08 (2006.01); B01J 37/12 (2006.01); B01J 37/14 (2006.01); B01J 21/04 (2006.01); B01J 21/08 (2006.01); B01J 21/10 (2006.01); B01J 21/12 (2006.01); B01J 23/52 (2006.01); B01J 23/89 (2006.01); B01J 35/00 (2006.01); B01J 35/02 (2006.01); B01J 35/10 (2006.01); C07C 67/42 (2006.01); C07C 69/54 (2006.01);
U.S. Cl.
CPC ...
B01J 21/04 (2013.01); B01J 21/08 (2013.01); B01J 21/10 (2013.01); B01J 23/52 (2013.01); B01J 23/8906 (2013.01); B01J 23/8913 (2013.01); B01J 35/006 (2013.01); B01J 35/008 (2013.01); B01J 35/0066 (2013.01); B01J 35/023 (2013.01); B01J 35/1019 (2013.01); B01J 35/1057 (2013.01); B01J 35/1061 (2013.01); B01J 37/0201 (2013.01); B01J 37/024 (2013.01); B01J 37/0205 (2013.01); B01J 37/0207 (2013.01); B01J 37/0211 (2013.01); B01J 37/06 (2013.01); B01J 37/08 (2013.01); B01J 37/12 (2013.01); B01J 37/14 (2013.01); C07C 67/39 (2013.01); B01J 2231/49 (2013.01); B01J 2523/19 (2013.01); B01J 2523/27 (2013.01); B01J 2523/842 (2013.01); B01J 2523/845 (2013.01); C07C 67/42 (2013.01); C07C 69/54 (2013.01);
Abstract
The present invention relates to novel catalysts for oxidative esterification, by means of which, for example, (meth)acrolein can be converted to methyl (meth)acrylate. The catalysts of the invention are especially notable for high mechanical and chemical stability even over very long periods. This especially relates to an improvement in the catalyst service life, activity and selectivity over prior art catalysts which lose activity and/or selectivity relatively quickly in continuous operation in media having even a small water content.