Chemistry: electrical and wave energy – Processes and products
Patent
1974-10-17
1976-05-04
Kaplan, G. L.
Chemistry: electrical and wave energy
Processes and products
204 54R, C25D 332, C25D 356, C25D 360
Patent
active
039545733
ABSTRACT:
The present invention provides compositions and a process for the electroplating of metal or metal alloy coatings of high brightness on a base surface, and especially coatings of tin or tin-lead alloys having a high brightness. The compositions comprise a 2,4,6 -- substituted phenol, at least one substituent of which includes at least one secondary, tertiary or quaternary nitrogen atom or an alkylene oxide adduct of such phenol and, optionally, an aldehyde and/or a surface -- active compound.
REFERENCES:
patent: 2460252 (1949-01-01), DuRose et al.
patent: 3749649 (1973-07-01), Valayil
patent: 3850765 (1974-11-01), Karustis et al.
Dahlgren Karl Gustav Lennart
Kolosh Frans Adam
Berol Kemi AB
Kaplan G. L.
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