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:
Mar. 05, 2024
Filed:
Aug. 01, 2019
Applicant:
Röhm Gmbh, Darmstadt, DE;
Inventors:
Alexander Lygin, Griesheim, DE;
Steffen Krill, Muehltal, DE;
Matthias Grömping, Darmstadt, DE;
Torsten Balduf, Pfungstadt, DE;
Rudolf Burghardt, Darmstadt, DE;
Assignee:
Röhm GmbH, Darmstadt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 45/75 (2006.01); C07C 45/82 (2006.01); C09K 15/08 (2006.01); C07C 47/22 (2006.01);
U.S. Cl.
CPC ...
C07C 45/75 (2013.01); C07C 45/82 (2013.01); C09K 15/08 (2013.01); C07C 47/22 (2013.01);
Abstract
Methacrolein is prepared in a continuous process by a Mannich condensation reaction of formaldehyde with propanal. A methacrolein polymerization inhibitor is introduced during the production process and a part thereof is recycled back into the reactor where the Mannich condensation reaction is carried out.