Process for the manufacture of diethylenetriamine and higher polyethylenepolyamines
AssigneeAkzo Nobel N.V.
InventorsJohan Lif, Kristina Ekenberg
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Abstract
The invention relates to a process for the manufacture of diethylenetriamine and higher polyethylenepolyamines by a transamination of ethylenediamine. The transamination is performed at a temperature from 135° C. to 180° C. at a pressure from 5 Mpa to 40 Mpa in the presence of hydrogen and a particulate catalysts containing 26 to 65% by weight of nickel on an oxide carrier. A high conversion degree of ethylenediamine and a high selectivity to form acyclic polyethylenepolyamines, such as diethylenetriamine are obtained by the process. The formation of cyclic amine compounds, e.g. piperazine, is low.
Claims10
A process for the manufacture of diethylenetriamine and other higher linear polyethylenepolyamines by a transamination reaction of ethylenediamine, characterised in that the reaction is performed at a temperature from 135° C. to 180° C., at a pressure from 5 MPa to 40 Mpa and in the presence of hydrogen and of a particulate catalyst containing 26 to 65% by weight of metallic nickel on an porous oxide support.
Dependencies are inferred from the claim text.