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:
May. 14, 2018
Basf SE, Ludwigshafen am Rhein, DE;
Stephan Zuend, Fremont, CA (US);
Rainer Papp, Ludwigshafen am Rhein, DE;
Boris Breitscheidel, Ludwigshafen am Rhein, DE;
Armin Lange De Oliveira, Heidelberg, DE;
BASF SE, Ludwigshafen am Rhein, DE;
Abstract
A process for preparing Cto Cmonohydroxy compounds from a bottom fraction arising in the distillation of a crude mixture of Cto Coxo-process aldehydes from cobalt-catalyzed or rhodium-catalyzed hydroformylation, or in the distillation of a crude mixture of Cto Coxo-process alcohols, which comprises contacting the bottom fraction in the presence of hydrogen with a catalyst comprising copper oxide and aluminum oxide, at a temperature of 150° C. to 300° C. and a pressure of 20 bar to 300 bar and subjecting the resulting crude hydrogenation product to distillation, and the amount of Cto Cmonohydroxy compounds present in the crude hydrogenation product after the hydrogenation being greater than the amount of Cto Cmonohydroxy compounds given stoichiometrically from the hydrogenation of the ester and aldehyde compounds present in the bottom fraction, including the Cto Cmonohydroxy compounds still present in the bottom fraction before the hydrogenation.