Tin plating bath composition and process

Details Tin plating bath composition and process Tin plating bath composition and process

C - Chemistry, Metallurgy

25

D

204/39

C25D 3/32 (2006.01) C23C 18/31 (2006.01)

Patent

CA 1190180

19 Tin Plating Bath Composition and Process Abstract An electrochemical tin plating bath composition permits high speed plating of tin over zinc and zinc alloy coated steel. The bath consists of stannous ion, a mineral acid, a surfactant consisting of nonylphenoxy- poly(ethyleneoxy)ethanol and Guar gum resin as a bodying agent. The combination of the surfactant and bodying agent makes it possible to obtain an adherent tin coating of minimum porosity and controlled, uniform thickness on a continuous basis by roll coating application.

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