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US 2019/0153608 A1Published application
Method of obtaining a yellow gold alloy deposition by galvanoplasty without using toxic metals or metalloids
AssigneesThe Swatch Group Research and Development Ltd, G. Aliprandini
InventorsGiuseppe ALIPRANDINI, Michel CAILLAUD
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Abstract
A galvanic bath, containing: gold metal in the form of alkaline aurocyanide; organometallic components; a wetting agent; a complexing agent; free cyanide; copper metal in the form of copper II cyanide and potassium; and indium metal in the form of a complex indium metal, where the galvanic bath does not contain cadmium and zinc, and where the galvanic bath deposits a yellow gold alloy comprising gold, copper, and indium as main components.
Claims15
A galvanic bath, comprising:
- gold metal in the form of alkaline aurocyanide;
- organometallic components;
- a wetting agent;
- a complexing agent;
- free cyanide;
- copper metal in the form of copper II cyanide and potassium;
- and
- indium metal in the form of a complex indium metal,
- wherein the galvanic bath does not comprise cadmium and zinc,
- and wherein the galvanic bath deposits a yellow gold alloy comprising gold, copper, and indium as main components.
7 more elements
Dependencies are inferred from the claim text.