EP 0041208 B1 19840118 - ALKALINE BATH FOR THE ELECTRODEPOSITION OF PINK TO YELLOW COLOURED LAYERS OF GOLD ALLOYS WITH LOW CARAT WEIGHT
Title (en)
ALKALINE BATH FOR THE ELECTRODEPOSITION OF PINK TO YELLOW COLOURED LAYERS OF GOLD ALLOYS WITH LOW CARAT WEIGHT
Publication
Application
Priority
DE 3020765 A 19800531
Abstract (en)
[origin: US4358351A] For the production of low carat rose to gold colored gold alloy coatings there are needed electrolytic baths containing soluble gold cyanide, soluble copper cyanide, potassium carbonate or potassium bicarbonate which produce corrosion resistant coatings of 13-18 carats and no physiologically hazardous cadmium. The baths of the present invention contain, in place of cadmium, 7.5 to 40 grams/liter of zinc as complex zinc cyanide.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
C25D 3/62 (2013.01 - EP US)
Designated contracting state (EPC)
CH FR GB IT LI
DOCDB simple family (publication)
EP 0041208 A1 19811209; EP 0041208 B1 19840118; DE 3020765 A1 19811210; DE 3020765 C2 19880331; JP S5723089 A 19820206; JP S648076 B2 19890213; US 4358351 A 19821109
DOCDB simple family (application)
EP 81103982 A 19810523; DE 3020765 A 19800531; JP 8020481 A 19810528; US 26614881 A 19810522