METHOD FOR PREPARING N-(2-AMINOETHYL)ETHANE-1,2-DIAMINE

摘要

The present invention relates to a method for preparing N-(2-aminoethyl)ethane-1,2-diamine. The method comprises: dissolving iminodiacetonitrile in an organic solvent, adding an OH type anion exchange resin and an iminodiacetonitrile stabilizer, and under the condition that the reaction temperature is 50°C to 150°C and the reaction pressure is 5 Mpa to 25 Mpa, and with the presence of a hydrogenation catalyst and a first additive, performing a hydrogenation reaction with hydrogen, to generate N-(2-aminoethyl)ethane-1,2-diamine. Compared with the prior art, the decomposition of iminodiacetonitrile is restrained, the poisoning factor of the catalyst is eliminated, and characteristics such as long catalyst service life, efficient technique, and high product purity are achieved.