Alkaline bright zinc plating and additive therefor

Details Alkaline bright zinc plating and additive therefor Alkaline bright zinc plating and additive therefor

1977-04-07

1978-03-28

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

204 55R, 204DIG2, 260 292EP, C25D 324, C25D 326

Patent

active

040813363

ABSTRACT:
An alkaline, electroplating bath for bright zinc plating comprising a heterocyclic nitrogen-containing compound such as, for example, nicotinic acid, which has been alkylated with a condensate of a difunctional halohydrin such as, for example, epichlorohydrin, and a hydroxy aryl compound such as, for example, vanillin, in admixture with certain polyethylenepolyamines or quaternary salts thereof, which bath is capable of producing bright, fine grained zinc deposits over a broad current density range both in the presence and absence of cyanides.

REFERENCES:
patent: 3655534 (1972-04-01), Kampe
patent: 3915815 (1975-10-01), Koch
patent: 3957595 (1976-05-01), DuBrow et al.
patent: 3972789 (1976-08-01), Eppensteiner et al.
patent: 3974045 (1976-08-01), Takahashi et al.
patent: 3988219 (1976-10-01), Rosenberg

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