EP 0384227 B1 19940119 - Bath for the galvanic deposition of pure gold coatings.
Title (en)
Bath for the galvanic deposition of pure gold coatings.
Title (de)
Bad zur galvanischen Abscheidung von Feingoldüberzügen.
Title (fr)
Bain de dépÔt galvanique de couches d'or fin.
Publication
Application
Priority
DE 3905705 A 19890224
Abstract (en)
[origin: EP0384227A1] Readily bondable pure gold coatings are obtained from electroplating baths which contain 2 to 100 g/l gold as alkali or ammonium gold (I)-cyanide, 0.1 mg to 5 g/l of a soluble bismuth compound, 0 to 250 g/l of a phosphonic acid, its salts, esters or simple substitution products and/or 0 to 250 g/l phosphoric acid or its salts, but at least 5 g/l of said compound, and have a pH of 6 to 10.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
C25D 3/48 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL
DOCDB simple family (publication)
EP 0384227 A1 19900829; EP 0384227 B1 19940119; AT E100503 T1 19940215; BG 91248 A 19931224; BR 9000807 A 19910205; DE 3905705 A1 19900830; DE 3905705 C2 19910606; DE 59004266 D1 19940303; HK 57794 A 19940617; JP 2697747 B2 19980114; JP H02247397 A 19901003; US 5055173 A 19911008
DOCDB simple family (application)
EP 90102476 A 19900208; AT 90102476 T 19900208; BG 9124890 A 19900220; BR 9000807 A 19900221; DE 3905705 A 19890224; DE 59004266 T 19900208; HK 57794 A 19940604; JP 4272790 A 19900226; US 48322090 A 19900222