Preparation of polyalkylene polyamines

Details Preparation of polyalkylene polyamines Preparation of polyalkylene polyamines

1980-08-28

1982-04-13

Doll, John

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

564497, C07C 8506

Patent

active

043249175

ABSTRACT:
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 phosphorus-containing cation exchange resin at a temperature of from about 250.degree. C. to about 400.degree. 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 monoethanolamine 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.

REFERENCES:
patent: 4036881 (1977-07-01), Brennan et al.
patent: 4044053 (1977-08-01), Brennan et al.

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