Invention Grant
- Patent Title: Silver powder and method for producing same
- Patent Title (中): 银粉及其制造方法
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Application No.: US11045974Application Date: 2005-01-28
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Publication No.: US07641817B2Publication Date: 2010-01-05
- Inventor: Hiroshi Matsushima , Kozo Ogi
- Applicant: Hiroshi Matsushima , Kozo Ogi
- Applicant Address: JP Tokyo
- Assignee: Dowa Mining Co., Ltd.
- Current Assignee: Dowa Mining Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Bachman & LaPointe, P.C.
- Priority: JP2004-027092 20040203
- Main IPC: H01B1/02
- IPC: H01B1/02 ; H01B1/22

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.
Public/Granted literature
- US20050167640A1 Silver powder and method for producing same Public/Granted day:2005-08-04
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