Production of nickelized shaped articles

US5445727A · kind A · utility

Assignee

• BASF SE

Inventors

• Volker Schwendemann · Neustadt, DE
• Klaus Glaser · Mutterstadt, DE
• Chung-Ji Tschang · Bad Dürkheim, DE
• Bernd Burkhart · Mutterstadt, DE
• Alfred Oftring · Bad Dürkheim, DE
• Bernhard Dung · Havelsee, DE

Key dates

• Filing date: Jul 25, 1994
• Grant date: Aug 29, 1995
• Expiry date: Jul 25, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C25D3/14
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Nickelized shaped 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 at least two brighteners by using as brighteners a mixture of PA0 A) from 2 to 98% by weight of one or more cyclic N-allylammonium or N-vinylammonium compounds I ##STR1## where the nitrogen atom is part of a pyridine, quinoline or isoquinoline ring system which may additionally carry one or two C.sub.1 - to C.sub.4 -alkyl substituents or halogen atoms, PA1 R.sup.1, R.sup.3 and R.sup.4 are each hydrogen or C.sub.1 - to C.sub.4 -alkyl, PA1 R.sup.2 is hydrogen or methyl, PA1 m is from 0 to 4, PA1 n is from 1 to 4, and PA1 X.sup..crclbar. is an n-valent inorganic or organic anion which promotes solubility in water, and PA0 B) from 98 to 2% by weight of one or more acetylenically unsaturated compounds II EQU R.sup.4 --C.tbd.C--R.sup.5 (II) PA0 where R.sup.4 and R.sup.5 are identical or different and each is C.sub.1 - to C.sub.4 -alkyl substituted by hydroxyl, sulfo, amino, C.sub.1 - to C.sub.4 -alkylamino or di(C.sub.1 - to C.sub.4 -alkyl)amino, although hydroxyl groups may have been reacted with f…