Silver powder

Details Silver powder Silver powder

2007-04-17

2008-12-09

Kopec, Mark (Department: 1796)

Compositions

Electrically conductive or emissive compositions

C424S063000

Reexamination Certificate

active

07462301

ABSTRACT:
There is provided a method for producing a silver powder having excellent dispersibility and capable of forming a paste which do not form suspended matters by phase separation and which is printed on a substrate to form a film having a uniform thickness. In this method, an alkali or a complexing agent is added to an aqueous silver salt containing solution to form a silver oxide containing slurry or an aqueous silver complex salt containing solution. After or before silver particles are deposited by reduction by adding a reducing agent to the silver oxide containing slurry or aqueous silver complex salt containing solution while stirring it, at least one chelating agent selected from the group consisting of compounds having an azole structure, dicarboxylic acids, hydroxy carboxylic acids and salts thereof is added to a silver power containing slurry solution as a dispersing agent.

REFERENCES:
patent: 10-088206 (1998-04-01), None
patent: 2001-107101 (2001-04-01), None
patent: 2002-080901 (2002-03-01), None

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