Patent ID: 6191310
Filing Date: 2001-02-20
Classification: C07C

Abstract:
A one-step process for the production of diaminoalkanes having two to six carbons which comprises: introducing into a reactor one or more C.sub.2 to C.sub.6 dihydric alcohols wherein the hydroxyl groups are separated by at least one carbon; reacting said C.sub.2 to C.sub.6 dihydric alcohol in the presence of excess ammonia and hydrogen and in the presence of a catalyst selected from the group consisting of Raney cobalt catalyst in granular form, Raney nickel catalyst in granular form, a nickel-rich, bulk-metal catalyst containing molybdenum oxide, and a Raney nickel catalyst in extruded form; reacting said C.sub.2 to C.sub.6 dihydric alcohol at a temperature of at least 150.degree. C. and a pressure of at least 500 psi; and separating the diaminoalkane product.