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. 06, 2006
Filed:
Oct. 11, 2001
Matthias Dernbach, Dossenheim, DE;
Christoph Sigwart, Schriesheim, DE;
Michael Hesse, Worms, DE;
Steffen Maas, Bubenheim, DE;
Matthias Dernbach, Dossenheim, DE;
Christoph Sigwart, Schriesheim, DE;
Michael Hesse, Worms, DE;
Steffen Maas, Bubenheim, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
A process is provided for improving the color number of polyhydric alcohols, especially trimethylolpropane, by catalytic hydrogenation, the polyhydric alcohol used in the hydrogenation having been purified by distillation following its preparation, wherein the hydrogenation is carried out in the presence of a macroporous supported heterogeneous catalyst containing, as the active metal, at least one metal of subgroups VII to X of the Periodic Table.