process for making a cyclic urea adduct from an ethyleneamine compound and process for preparing ethylene amines or cyclic urea adducts therefrom

摘要

the invention relates to a process for making a cyclic urea adduct from an ethyleneamine compound, the ethyleneamine compound being selected from the group of ethyleneamines and hydroxyethylethyleneamines and comprising at least a chemical portion of -nh-ch2-ch2 -nh- and at least two chemical portions of ethylene, in which the ethyleneamine compound is reacted with co2 in the presence of an auxiliary compound selected from ethylenediamine (eda), monoethanolamine (mea) and mixtures thereof, the reason being molar auxiliary compound to amine compound is at least 0.02: 1. it was found that the presence of an auxiliary compound selected from ethylenediamine (eda), monoethanolamine (mea) and mixtures thereof results in a substantial increase in the reaction rate compared to a process in which the auxiliary compound is not present.