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:
May. 25, 2021
Filed:
Feb. 14, 2017
Evonik Operations Gmbh, Essen, DE;
Stephan Rautenberg, Bornheim, DE;
Sascha Ceylan, Frankfurt, DE;
Martin Koerfer, Kahl, DE;
Judith Hierold, Hannover, DE;
Harald Jakob, Hasselroth, DE;
Christian Kaiser, Waldaschaff, DE;
Rainer Malzkorn, Grosskrotzenburg, DE;
Thorsten Merker, Hanau, DE;
Anja Nordschild, Oberursel, DE;
Evonik Operations GmbH, Essen, DE;
Abstract
The present invention relates to a method for preparing 3-methylthiopropionaldehyde by reacting methyl mercaptan with acrolein, in which deviations in the stoichiometry of methyl mercaptan to acrolein in the reaction to give 3-methylthiopropionaldehyde are compensated for by supplying or by forming 1,3-bis(methylthio)-1-propanol, and also to the use of 1,3-bis(methylthio)-1-propanol as a storage form of methyl mercaptan and/or 3-methylthiopropionaldehyde.