Back to results
US 2011/0034693 A1Published application
Preparation of methylpentamethylenediamine and methylpiperidine
AssigneeRhodia Operations
InventorPhilippe Marion
Life of this patent
Estimating the term…
Abstract
Methyl-2-pentamethylenediamine and methyl-3-piperidine are prepared by hydrogenation of methylglutaronitrile in the presence of a catalyst including cobalt, chromium, and nickel, especially a catalyst based on Raney cobalt doped with nickel and chromium.
Claims14
-12. (canceled)
A process for the preparation of 2-methylpentamethylenediamine and 3-methylpiperidine, comprising hydrogenating methylglutaronitrile in the presence of a catalyst which comprises cobalt and nickel and chromium doping elements therefor, under an absolute hydrogen pressure of less than 50 bar.
Dependencies are inferred from the claim text.