Bright palladium electroplating baths

Details Bright palladium electroplating baths Bright palladium electroplating baths

C - Chemistry, Metallurgy

25

D

204/29.5

C25D 3/52 (2006.01)

Patent

CA 1118709

S-10743 BFC: pr BRIGHT PALLADIUM ELECTROPLATING BATHS ABSTRACT OF THE DISCLOSURE The instant invention is particularly directed to a palladium electroplating bath and a method of plating therewith. The bath comprises essentially pure palladium free of alloying elements thereof and being in electrodepositable form, as well as a Class I brightener selected from the group consisting of methylene bis(naphthalene sodium sulfonate), sodium benzene sulfonate, benzene sulfonimide and phenyl-sulfonic acid and a Class II organic brightener selected from the group consisting of benzaldehyde-o- sodium sulfonate, 2-butyne-1, 4-diol, 2 butene-1,4- diol and allyl sulfonate in order to improve the brightness of the deposit. The bath is particularly effective in plating palladium and alloys thereof.

311500

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