A method for the production of alkylene diamine $sig acid

摘要

The invention pertains to a process for the preparation of alkylene diamine triacetic acid (derivatives) which comprises the conversion of an alkylene diamine (derivative) to a metal salt of an alkylene diamine triacetic acid (derivative), wherein the reaction is carried out in the presence of a polyvalent metal ion Ma+ and the entire reaction is carried out under hydrolyzing conditions if any of the reactants contain or form nitrile or amide groups.