Preparation of polyalkylene polyamines

Details Preparation of polyalkylene polyamines Preparation of polyalkylene polyamines

C - Chemistry, Metallurgy

08

G

260/607.1

C08G 73/02 (2006.01)

Patent

CA 1068304

PREPARATION OF POLYALKYLENE POLYAMINES (D#75,005-1-F) Abstract of the Disclosure An improved process for selectively preparing a predominantly noncyclic polyalkylene polyamine compound is disclosed wherein an alkyleneamine compound is contacted with an alkanolamine compound in the presence of a cata- lytically effective amount of a phosphorus-containing substance at a temperature of from about 250°C to about 350°C under a pressure sufficient to maintain the mixture essentially in liquid phase and the polyalkylene polyamine is then recovered from the resultant reaction mixture. In a preferred embodiment ethylenediamine is contacted with mono- ethanolamine to produce a predominantly linear polyethylene polyamine product with very low yields of heterocyclic amine materials. The desired polyethylene polyamines produced can be directly recovered from the reaction products by known purification procedures.

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