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:
Jun. 12, 2018
Filed:
Sep. 16, 2015
Applicant:
Evonik Röhm Gmbh, Darmstadt, DE;
Inventors:
Rudolf Burghardt, Darmstadt, DE;
Steffen Krill, Mühltal, DE;
Torsten Balduf, Pfungstadt, DE;
Gerhard Koelbl, Gernsheim, DE;
Martin Koestner, Darmstadt, DE;
Eduard Rundal, Frankfurt, DE;
Assignee:
Evonik Roehm GmbH, Darmstadt, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07C 45/75 (2006.01); C07C 69/00 (2006.01); C07C 67/44 (2006.01);
U.S. Cl.
CPC ...
C07C 45/75 (2013.01); Y02P 20/582 (2015.11);
Abstract
The present invention relates to an optimized process for the preparation of methacrolein. Methacrolein is used in chemical synthesis particularly as an intermediate for the preparation of methacrylic acid, methyl methacrylate or even active ingredients, fragrances or flavorings. In particular the present invention relates to the optimization of the process parameters by which, inter alia, a reduction of the content of harmful dimeric methacrolein in the end product may be achieved.