SATIN-FINISHED NICKEL OR NICKEL ALLOY COATING

摘要

In order to achieve an even satin-finished nickel or nickel alloy coating an acid nickel or nickel alloy electroplating bath is proposed which contains a sulfosuccinic acid compound of the general formula (I) additional to at least one quaternary ammonium compound, wherein R1, R2 = hydrogen ion, alkali ion, alkaline earth ion, ammonium ion and/or C1-C18 hydrocarbon moiety, wherein R<1> and R2 are identical or different with the proviso that at the most one of the groups R1 and R2 = hydrogen ion, alkali ion, and alkaline earth ion, and wherein K<+> = hydrogen ion, alkaline ion, alkaline earth ion, ammonium ion.