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:
Jun. 19, 2007
Filed:
Dec. 05, 2002
Applicants:
Walter Toetsch, Marl, DE;
Alfred Kaizik, Marl, DE;
Hermann-josef Schulte-althoff, Haltern, DE;
Inventors:
Assignee:
OXENO Olefinchemie GmbH, Marl, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07C 45/50 (2006.01); C07C 45/90 (2006.01);
U.S. Cl.
CPC ...
Abstract
Process for preparing aldehydes and alcohols by rhodium-catalyzed hydroformylation of olefins having 6–20 carbon atoms with subsequent separation by distillation of the output from the hydroformylation reaction into the hydroformylation products and a rhodium-containing solution and recirculation of this solution to the hydroformylation reaction, wherein the rhodium concentration of the recirculated rhodium-containing solution is 20–150 ppm by mass.