METHOD FOR INHIBITING METAL CORROSION IN AQUATIC SYSTEMS, COMPLEX INCLUDING AN AMINOPHOSPHIONIC ACID DERIVATIVE AND MANGANION AND PROCEDURE FOR INHIBITING METAL CORROSION IN AQUATIC SYSTEMS

摘要

The inhibition of corrosion of metals in water conducting systems by organic aminoalkylenephosphonic acid derivatives is improved by using in combination therewith a manganese compound capable of providing manganese ions. The said aminoalkylenephosphonic acid derivative may also contain other functional groups, eg. carboxylates, quaternary amines, hydroxyalkyl groups and the like.