EP 0815291 B1 19990428 - SOLUTION FOR USE IN THE ELECTROLYTIC DEPOSITION OF ZINC OR ZINC-ALLOY COATINGS
Title (en)
SOLUTION FOR USE IN THE ELECTROLYTIC DEPOSITION OF ZINC OR ZINC-ALLOY COATINGS
Title (de)
LÖSUNG ZUM ELEKTROLYTISCHEN ABSCHEIDEN VON ZINK- ODER ZINKLEGIERUNGSÜBERZÜGEN
Title (fr)
SOLUTION POUR DEPOSER PAR ELECTROLYSE DES REVETEMENTS DE ZINC OU D'ALLIAGE DE ZINC
Publication
Application
Priority
- DE 19509713 A 19950310
- EP 9601048 W 19960311
Abstract (en)
[origin: WO9628590A1] The invention concerns an aqueous alkaline cyanide-free solution for use in the electrolytic deposition of lustrous and blister-free zinc or zinc-alloy coatings of uniform layer thickness on substrate surfaces. Electrolytic zinc- or zinc-alloy baths are used for depositing zinc or zinc-alloy coatings. The layers are partly decorative and for that reason the layers must have an even lustre across a wide current density range. However, sufficiently uniform layer thicknesses cannot be obtained on complex workpiece surfaces with sharp-edged structures and concave surface regions, and zinc and zinc-alloy layers deposited on such workpieces tend in addition to be more prone to blistering. These disadvantages are eliminated by a coating solution containing, in addition to the normal bath components, diallyl ammonium-sulphur dioxide copolymers of general structural formula (I) shown, and/or diallyldimethyl ammonium monomers.
IPC 1-7
IPC 8 full level
CPC (source: EP KR)
C25D 3/22 (2013.01 - EP KR); C25D 3/565 (2013.01 - EP)
Designated contracting state (EPC)
AT CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
WO 9628590 A1 19960919; AT E179465 T1 19990515; BR 9607363 A 19971230; CA 2215048 A1 19960919; DE 19509713 C1 19960822; DE 59601779 D1 19990602; EP 0815291 A1 19980107; EP 0815291 B1 19990428; ES 2132899 T3 19990816; JP H11501699 A 19990209; KR 19980702896 A 19980905
DOCDB simple family (application)
EP 9601048 W 19960311; AT 96907440 T 19960311; BR 9607363 A 19960311; CA 2215048 A 19960311; DE 19509713 A 19950310; DE 59601779 T 19960311; EP 96907440 A 19960311; ES 96907440 T 19960311; JP 52727196 A 19960311; KR 19970706304 A 19970910