Method of regenerating permanganate etch bath

Details Method of regenerating permanganate etch bath Method of regenerating permanganate etch bath

C - Chemistry, Metallurgy

23

F

149/19

C23F 1/46 (2006.01) C23C 18/16 (2006.01) C23C 18/22 (2006.01) H05K 3/00 (2006.01)

Patent

CA 1245137

ABSTRACT OF THE DISCLOSURE A method is provided for regenerating the spent permanganate ions in an alkaline permanganate-containing etchant composition by adding to the composition an oxidizer selected from the group consisting of an inorganic bromate, hypochlorite, chlorite, chlorate, peroxydisulfate, monopersulfate and mixtures thereof.

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