Process for the Preparation of a Mixture of Chelating Agents, Mixture of Chelating Agents and Methods of Using Them

摘要

The present invention relates to a process for the in situ preparation of mixtures of chelating agents by catalyzed reactions of diethanolamine with maleic acid and then with 2-halocarboxylic acid, mixtures obtainable using said process and mixtures of chelating agents. In addition, the invention relates to methods where such mixtures are used.