Patent ID: 6376713
Filing Date: 2002-04-23
Classification: C07C,Y02P

Abstract:
A process for the preparation of primary aliphatic polyamines of the general formula in which R1 and R2 independently of one another are hydrogen, methyl ethyl or aminomethyl, by reaction of the corresponding polyalcohols of the general formula in whichR1â€²=R1 or, if R1 is aminomethyl, R1â€² can also be hydroxymethyl, and R2â€²=R2 or if R2 is aminomethyl, R2â€² can also be hydroxymethyl,with ammonia in the presence of hydrogen, characterized in that the reaction is carried out with supercritical ammonia in the presence of a catalyst containing Ni and/or Co at a ratio of 1 to 300 mol of ammonia and 0.01 to 20 mol of hydrogen to 1 eq. of alcohol.