| 摘要 |
<p>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: or where M = H, Li, Na, K or NH4, R = aryl or alkyl of 1 - 4 carbons, n = 2 to 3, m = 0 to 3, and x = 7 to 2400.</p> |
