PRODUCTION OF NICKELIZED ARTICLES

摘要

O.Z. 0050/42002 of the Disclosure: Nickelized articles are produced by electrodeposition of nickel from aqueous acidic baths containing as essential constituents one or more nickel salts, one or more inorganic acids and one or more brighteners, wherein there are used as brighteners 2-hydroxy-3-butenyl-containing compounds of the formula I I where n is 1, 2 or 3 and the variable A has the following meanings; for n = 1 - hydroxyl - a group of the formula -OR1, where R1 is C1-C4-alkyl, which may be sulfo-substituted, phenyl, 3- or 4-sulfophenyl, .alpha.- or .beta.-naphthyl, 3-, 4-, 5-, 6- or 7-sulfo-.alpha.-naphthyl or 4-, 5-, 6-, 7- or 8-sulfo-.beta.-naphthyl - a phosphorus-containing group of -O-PO(OX)H or -O-PO(OX)2, where X is hydrogen or an alkali metal or ammonium cation - a sulfo group of the formula -SO3X - an amino group of the formula -NH2, -NHR1 or -N(R1)2, where if two radicals R1 are present on the N-atom they can be identical or different for n = 2 - an amino group of the formula -NH- or -NR1- - a trivalent oxygen atom for n = 3 - a trivalent nitrogen atom.