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US 5,850,047 AGranted
Production of copper powder
AssigneeMurata Manufacturing Co., Ltd.
InventorsHiroji Tani, Naoaki Ogata
Life of this patent
Estimating the term…
Abstract
A method of producing copper powder having little variation in its particle size and an excellent monodispersion properties. A copper complex ion solution is prepared from a copper-containing solution and a complexing agent, then a reducing agent is added to the copper complex ion solution to precipitate metallic copper. The copper-containing solution herein contains copper sulfate, copper formate, copper pyrophosphate, copper chloride or copper carbonate and the complexing agent is at least one carboxylate or phosphate.
Claims4
A method of producing copper powder comprising the steps of:
- preparing a copper complex ion solution from a copper-containing solution and at least one complexing agent selected from the group consisting of carboxylates and phosphates;
- then adding a reducing agent to the copper complex ion solution to precipitate metallic copper.
Dependencies are inferred from the claim text.