Brightening composition for acid zinc electroplating bath and pr

Details Brightening composition for acid zinc electroplating bath and pr Brightening composition for acid zinc electroplating bath and pr

1979-01-31

1979-11-27

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

C25D 322

Patent

active

041760174

ABSTRACT:
An acid zinc electroplating bath and bright zinc plating process employing said bath which contains an effective amount of a controlled mixture of brightening agents including a bath soluble polyacrylamide polymer and N-substituted polyacrylamide derivatives thereof as well as copolymers thereof as a primary brightener in combination with a secondary brightener comprising boric acid and Group I and II metal salts thereof and/or thiourea and N-substituted derivatives thereof as well as selected adducts thereof. The acid zinc electroplating bath incorporating the mixture of primary and secondary brightening agents is economical and versatile in use and produces a ductile plating deposit having a lustrous appearance.

REFERENCES:
patent: 3558448 (1971-01-01), Accaries et al.
patent: 3723262 (1973-03-01), Rushmere
patent: 4093523 (1978-06-01), Henricks et al.

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