Electroplating bath for depositing tin or tin alloy with brightn

Details Electroplating bath for depositing tin or tin alloy with brightn Electroplating bath for depositing tin or tin alloy with brightn

1978-11-15

1979-09-18

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

204 44, 204 54R, C25D 332, C25D 360

Patent

active

041682238

ABSTRACT:
An electroplating bath for depositing tin or a tin alloy with satisfactory brightness, which comprises a mother bath of a pH-value ranging from 4 to 8 and containing citric acid or its salt, an ammonium salt and a water-soluble polymer as a brightener. The bath may further comprise an aldehyde compound as a co-brightener.

REFERENCES:
patent: 3616306 (1971-10-01), Conoby et al.
patent: 3769182 (1973-10-01), Hsu
patent: 3892637 (1975-07-01), Polti
patent: 3905878 (1975-09-01), Dohi et al.

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