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. 18, 2021
Filed:
Jun. 05, 2020
Evonik Operations Gmbh, Essen, DE;
Peter Kucmierczyk, Herne, DE;
Robert Franke, Marl, DE;
Dirk Fridag, Haltern am See, DE;
Johannes Knossalla, Schermbeck, DE;
Marc Schäpertöns, Recklinghausen, DE;
Frederik Gluth, Mülheim an der Ruhr, DE;
Evonik Operations GmbH, Essen, DE;
Abstract
The invention relates to a process for preparing carboxylic acids or salts thereof by hydrolysis or saponification of an ester, which is obtained by alkoxycarbonylation of a C2 to C20 hydrocarbon having at least one multiple bond, preferably having at least one olefinic double bond, in which the homogeneous catalyst system used is separated from the product mixture by means of membrane separation. In a development of the present invention, the ester thus formed is converted into another ester by transesterification and then hydrolyzed or saponified.