Process for the preparation of ethylene diamine having low water

Details Process for the preparation of ethylene diamine having low water Process for the preparation of ethylene diamine having low water

1975-06-13

1977-06-28

Bernstein, Hiram H.

Distillation: processes, separatory

Distilling to separate or remove only water

From organic compound

203 59, 203 73, 260583N, B01D 334

Patent

active

040324117

ABSTRACT:
A process is provided for the removal of water from a mixture of ethylene diamine and water and for the preparation of ethylene diamine having a water content below the azeotropic equilibrium water content between ethylene diamine and water, by distilling the mixture in the presence of a distillation adjuvant comprising one or more compounds selected from the group consisting of piperazine, diethylene, triamine, hydroxethyl ethylene diamine, and aminoethyl piperazine. The adjuvant can be removed later if desired.

REFERENCES:
patent: 3055809 (1962-09-01), Lichtenwalter
patent: 3137730 (1964-06-01), Fitz-William
patent: 3394186 (1968-07-01), Muhlbauer
Hackh's Chemical Dictionary, 4th Ed.-Grant, McGraw-Hill 1969 p. 222.

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