Alkaline zinc electroplating baths and additive compositions the

Details Alkaline zinc electroplating baths and additive compositions the Alkaline zinc electroplating baths and additive compositions the

1976-01-23

1980-02-12

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

204 55Y, 528398, 528250, 528252, 525506, C25D 322, C25D 324, C08G 1226

Patent

active

041882717

ABSTRACT:
A composition is described which provides an improvement in the electrodeposition of zinc from aqueous alkaline plating baths and particularly from alkaline plating baths containing little or no cyanide. The new composition comprises the reaction product of one or more piperazines, at least one additional nitrogen-containing compound selected from the group consisting of ammonia or aliphatic acyclic compounds containing at least one primary amine group, formaldehyde, and an epihalohydrin or a glycerol halohydrin or mixtures thereof. Aqueous, alkaline zinc plating baths containing the additive compositions of the invention deposit a bright zinc coating over a wide range of current densities.

REFERENCES:
patent: 3803008 (1974-04-01), Rosenberg et al.
patent: 3849325 (1974-11-01), Kampe
patent: 3915815 (1975-10-01), Koch

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