Electrolyte and method for electrodepositing bright metal deposits
AssigneeOxy Metal Industries Corporation
InventorRoy W. Herr
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Abstract
The present invention is directed to an aqueous bath for the electrodeposition of bright metal deposits, and is more particularly concerned with a bath composition which provides upon the basis metal an electrodeposit having improved brightness, superior adhesion to the substrate, and as well, a condition of ductility markedly better than that obtained from certain prior art baths. The electroplating bath composition of this invention includes therein a sulfamalkylated polyamine which is a reaction product containing nitrogen substituted alkyl sulfamate units represented by the general formulae: ##STR1## WHERE M = H, Li, Na, K or NH.sub.4, R = aryl, alkyl of 1 - 4 carbons, N = 2 to 3, M = 0 to 3, and X = 7 to 2400.
Claims7
An aqueous bath for the electrodeposition of bright zinc, copper, nickel-iron, and other metallic materials upon a substrate, which comprises a source of zinc, copper, nickel and iron ions or other metallic ions, and a sulfamalkylated polyamine for improving the brightness, ductility and leveling properties of the metallic electrodeposit.
An aqueous bath for the electrodeposition of bright zinc, copper, nickel-iron and other metallic materials upon a substrate, which comprises a source of zinc, copper, nickel and iron ions or other metallic ions, and at least 0.0001 g/l of a reaction product of a polyamine having the general empirical formula --[C.sub.2 H.sub.5 N].sub.x --, an aldehyde and sulfamic acid, said reaction product containing nitrogen substituted alkyl sulfamate groups as an integral part of the polymer chain and X = 7 to 2400.
An aqueous bath for the electrodeposition of bright nickel-iron upon a substrate, which comprises a source of nickel and iron ions, about 10 to 100 g/l of a complexing agent, about 30 to 60 g/l of a buffering agent, approximately 0.5 to 10 g/l of a brightening agent, and a sulfamalkylated polyamine present in an amount of about 0.0001 to 1.0 g/l for improving the brightness, ductility and leveling properties of the electrodeposit.
Dependencies are inferred from the claim text.