| 摘要 |
<p>In a process for preparing N,N'-diacetylethylene diamine by mixing ethylene diamine with the stoichiometric amount of acetic acid, a greater or smaller part of which may be aqueous, and distilling off any water originating from the use of aqueous acetic acid, and then dehydrating the ethylene diamine diacetate salt at a temperature of from 140°C to 150°C while using an auxiliary agent for distilling off water, as said auxiliary agent use is made of an organic solvent forming with water an azeotropic mixture having a boiling point preferably lying between 80°C and 200°C.</p> |
