04755265 is referenced by 47 patents and cites 24 patents.

Methods for depositing metals on or removing metals from substrates are provided which involve the use of electrolytic cells comprising an anode and cathode, sulfuric acid, and a chalcogen-containing compound soluble in said bath and having the empirical formula ##STR1## wherein X is a chalcogen, each of R.sub.1 and R.sub.2 is selected from hydrogen, NR.sub.3 R.sub.4 and NR.sub.5, at least one of R.sub.1 and R.sub.2 is other than hydrogen, each of R.sub.3 and R.sub.4 is hydrogen or a monovalent organic radical, and R.sub.5 is a divalent organic radical, in which the molar ratio of the chalcogen compound to sulfuric acid is about 1 or more, and the molar ratio of water to the combination of acid and chalcogen compound is about 20 or less. These methods enable the use of higher concentrations of strong acids than would otherwise be possible, minimize hydrogen and/or oxygen evolution at the electrodes with attendant advantages, and are useful for electroplating (including immersion plating), electroforming, electrolytic machining, electropolishing, electrolytic roughening, anodizing and electrowinning among others.

Title
Processes for the deposition or removal of metals
Application Number
750322
Publication Number
4755265
Application Date
March 3, 1987
Publication Date
July 5, 1988
Inventor
Donald C Young
Fullerton
CA, US
Agent
D Sandford
G Wirzbicki
Michael H Laird
Assignee
Union Oil Company of California
CA, US
IPC
B05D 3/02
C25F 3/00
C25D 3/02
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