Compositions useful in copper oxidation, and a method to prepare copper oxidation solutions

Abstract From the Canadian patent

Abstract of the Invention, Tetra-substituted zirconate or titanate organophosphate or organopyrophosphate coupling agents are combined with an alkali metal phosphate salt and a chlorite salt in an aqueous solution useful for copper oxidation. The concentration of the alkali metal phosphate salt in the aqueous solution must be 2.5 times higher than the titanate or zirconate coupling agent. A process for the preparation of superior compositions is also described wherein the coupling agent can not be mixed in an aqueous solution with the chlorite salt unless the alkali metal phosphate salt is present in the solution also.