Composition and process for chemically stripping metallic...

Details Composition and process for chemically stripping metallic... Composition and process for chemically stripping metallic...

C - Chemistry, Metallurgy

09

K

149/21

C09K 13/04 (2006.01) C23F 1/00 (2006.01) C23F 1/44 (2006.01)

Patent

CA 1137396

Abstract of the Disclosure An improved process and composition for chemically stripping metallic deposits from a substrate, and particularly, from the contact tips of electroplating racks and like apparatus to maintain proper operating efficiency thereof. The improved composition and method employs an aqueous acidic solution con- taining nitric acid, chloride ions and manganous ions present in an amount sufficient to accelerate the initiation of and the rate of stripping of the metallic deposits. The method and com- position are applicable for chemically stripping a variety of metallic deposits at stripping rates substantially higher than those heretofore attainable with prior art compositions and techniques. -16-

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