Preparation of polyalkylene polyamines

Details Preparation of polyalkylene polyamines Preparation of polyalkylene polyamines

1976-05-03

1977-08-23

Wyman, Daniel E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252431P, 260584R, C07C 8720, C07C 8506

Patent

active

040440532

ABSTRACT:
An improved process for selectively preparing a predominantly noncyclic polyalkylene polyamine compound is disclosed wherein an alkyleneamine compound is contacted with a diol compound in the presence of a catalytically effective amount of a phosphorus-containing substance at a temperature of from about 250.degree. to about 350.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 monoethylene diol 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: 3121115 (1964-02-01), Meuly
patent: 3387032 (1968-06-01), Leonard
patent: 3520933 (1970-07-01), Adam et al.

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