Phosphonium salts and use thereof as brighteners for aqueous acidic electronickelization baths

US5445724A · kind A · utility

Assignee

• BASF SE

Inventors

• Bernd Burkhart · Mutterstadt, DE
• Alfred Oftring · Bad Dürkheim, DE
• Volker Schwendemann · Neustadt, DE
• Klaus Glaser · Mutterstadt, DE

Key dates

• Filing date: Sep 30, 1994
• Grant date: Aug 29, 1995
• Expiry date: Sep 30, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F9/5428
• WIPO field: Organic fine chemistry
• 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 one or more brighteners by a procedure in which the brighteners used are phosphonium salts I ##STR1## where R.sup.1 to R.sup.3 are each C.sub.1 -C.sub.18 -alkyl, which may be carboxyl-, C.sub.1 -C.sub.4 -alkoxycarbonyl- or cyano-substituted, C.sub.2 -C.sub.12 -alkenyl, C.sub.2 -C.sub.12 -alkynyl, C.sub.5 -C.sub.8 -cycloalkyl, C.sub.7 -C.sub.12 -phenylalkyl, phenyl, which may be substituted by one or two substituents selected from the group consisting of C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, halogen, hydroxyl, phenyl and C.sub.1 -C.sub.4 -alkoxycarbonyl, or mono- or di(C.sub.1 -C.sub.4 -alkyl)amino, PA1 R.sup.4 and R.sup.5 are each hydrogen or C.sub.1 -C.sub.4 -alkyl, PA1 A is hydrogen or a group of the formula --CO--H, --CO--R.sup.6, --CO--OH, --CO--OR.sup.6, --CO--CH.sub.2 --CO--OR.sup.6, --O--CO--H, --O--CO--R.sup.6, --OR.sup.6, --SO.sub.2 --R.sup.6, --SO.sub.2 --OH, --SO.sub.2 --OR.sup.6, --PO(OH).sub.2, --PO(OH)(OR.sup.6), --PO(OR.sup.6).sub.2, --OPO(OH).sub.2, --OPO(OH)(OR.su…