Zinc plating process

Details Zinc plating process Zinc plating process

1977-03-07

1977-12-13

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

260 292R, C25D 322

Patent

active

040627420

ABSTRACT:
Zinc plating process comprising adding water-soluble, amphoteric polysulfone compounds having the formula (A) as set forth below and, optionally, aromatic aldehydes to a zinc plating bath of an alkali zincate type and subjecting the resulting bath to electrodeposition conditions. The Amphoteric polysulfone compounds have the formula ##STR1## wherein: R.sub.1 and R.sub.2 each independently represents a straight or branched chain alkyl group having from 1 to 4 carbon atoms or a 2-hydroxyethyl group; a is in the range of 0.03 to 0.5; b is in the range of 0.3 to 0.77; c is in the range of 0.2 to 0.4, provided that c is not greater than b .times. 0.8; and n is in the range of 5 to 100.

REFERENCES:
patent: 4030987 (1977-06-01), Fujita et al.

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