SYNTHESIS OF RARE EARTH METAL EXTRACTANT

摘要

A RARE EARTH METAL EXTRACTANT IN THE FORM OF A DIALKYL DIGLYCOL AMIC ACID IS SYNTHESIZED BY REACTING DIGLYCOLIC ANHYDRIDE WITH A DIALKYLAMINE IN A SYNTHESIS MEDIUM. A MOLAR RATIO (B/A) OF DIALKYLAMINE (B) TO DIGLYCOLIC ANHYDRIDE (A) IS AT LEAST 1.0. A NON-POLAR OR LOW-POLAR SOLVENT IN WHICH THE DIALKYL DIGLYCOL AMIC ACID IS DISSOLVABLE IS USED AS THE SYNTHESIS MEDIUM.