C - Chemistry – Metallurgy – 25 – F
Patent
C - Chemistry, Metallurgy
25
F
204/83.5
C25F 3/02 (2006.01) C25F 5/00 (2006.01)
Patent
CA 1171816
Abstract of the Disclosure An improved electrolytic bath composition and process for stripping metal deposits from a different basis metal comprising an aqueous solution containing an activating halogen compound, a stripping component selected from the group consisting of (a) a bath solu- ble amine, (b) a bath soluble inorganic nitrate and/or organic nitro compound and mixtures of (a) and (b), an inhibiting agent to inhibit attack of the basis metal comprising glucoheptonic acid, malic acid, and mixtures thereof, as well as the Group IA, IIA and ammonium salts thereof, and at least one bath soluble compound selec- ted from the group consisting of thiocyanates, oxalates, and mixtures thereof. The stripping of the metal deposit is effected by immersing the object in the bath while anodically charged and passing electric current through the bath to a cathode for a period of time sufficient to achieve the desired magnitude of stripping of the metal deposit.
377450
Hooker Chemicals & Plastics Corp.
Swabey Ogilvy Renault
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