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:
Mar. 12, 2019
Filed:
Jan. 22, 2016
Benjamin Willy, Duesseldorf, DE;
Jochen Niemeyer, Essen, DE;
Guenter Kreilkamp, Marl, DE;
Beatrix Vom Bruch, Herten, DE;
Manfred Neumann, Marl, DE;
Michael Keup, Marl, DE;
Benjamin Willy, Duesseldorf, DE;
Jochen Niemeyer, Essen, DE;
Guenter Kreilkamp, Marl, DE;
Beatrix Vom Bruch, Herten, DE;
Manfred Neumann, Marl, DE;
Michael Keup, Marl, DE;
Evonik Degussa GmbH, Essen, DE;
Abstract
An N-substituted triacetonediamine compound is prepared by reacting 4-amino-2,2,6,6-tetramethylpiperidine or a derivative thereof with a carbonyl compound in a reductive amination, wherein reductive conditions are established by conducting the reaction in the presence of hydrogen and in the presence of a supported catalyst, wherein the supported catalyst includes at least one metal M, wherein the metal M is selected from the group consisting of V, Cr, Mo, Mn, Ni, Pd, Pt, Fe, Ru, Os, Co, Rh, Ir, and Cu.