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:
Oct. 03, 2023
Filed:
Nov. 16, 2022
Evonik Operations Gmbh, Essen, DE;
Frank Geilen, Haltern am See, DE;
Alexander Brächer, Haltern am See, DE;
Stefan Drees, Duelmen, DE;
Benedikt Dereks, Bochum, DE;
Robert Franke, Marl, DE;
Ana Markovic, Haltern am See, DE;
Armin Matthias Rix, Marl, DE;
Martin Oldemeyer, Haltern am See, DE;
Dirk Fridag, Haltern am See, DE;
Evonik Operations GmbH, Essen, DE;
Abstract
A process for preparing aldehydes by a homogeneously catalyzed hydroformylation of Cto Colefins involves withdrawing a biphasic stream (liquid/gaseous) and expanding in two stages. Before, between, or after the two stages, the liquid phase is cooled. Only after expansion and cooling is the homogeneously dissolved rhodium catalyst system separated from the residual stream in a three-stage removal.