Bright palladium electroplating baths

Details Bright palladium electroplating baths Bright palladium electroplating baths

1977-09-19

1978-07-04

Edmundson, F.C.

Chemistry: electrical and wave energy

Processes and products

204 43N, C25D 352

Patent

active

040986560

ABSTRACT:
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(napthlene 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.

REFERENCES:
patent: 3580820 (1971-05-01), Yamamura et al.
patent: 3933602 (1976-01-01), Henzi et al.
patent: 3972787 (1976-08-01), Nobel et al.
Metal Finishing Guide Directory, vol. 42, pp. 358-360, 1974.

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