Title:
PROCESS FOR PRODUCTION OF ULTRAFINE SILVER PARTICLES AND ULTRAFINE SILVER PARTICLES PRODUCED BY THE PROCESS
Document Type and Number:
WIPO Patent Application WO/2007/105636
Kind Code:
A1
Abstract:
The invention aims at providing ultrafine silver particles having diameters
of nanometer order which exhibit low-temperature sinterability free from the
influence of a dispersant and are reduced in the content of impurities to thereby
attain lower electrical resistance and which are excellent in dispersibility.
The aim is attained by a process for the production of ultrafine silver particles
by a wet reduction method which is characterized by mixing a silver salt solution
containing a silver salt, a chelating agent, and gelatin with a reducing agent
solution containing a reducing agent and subjecting the obtained mixture to
reduction to form ultrafine silver particles. The obtained ultrafine silver
particles have a mean primary particle diameter of 100nm or below and are excellent
in dispersibility.
Inventors:
MUKUNO, Takashi (Ltd. Engineered Metal Powders Plant 1-1, Nishiyamacho 1-chome, Hikoshima, Shimonoseki-sh, Yamaguchi 93, 7500093, JP)
向野 隆 (〒93 山口県下関市彦島西山町１丁目１番１号 彦島製錬株式会社 機能粉工場内 Yamaguchi, 7500093, JP)
FUJIMOTO, Taku (Ltd. Engineered Metal Powders Plant 1-1, Nishiyamacho 1-chome, Hikoshima, Shimonoseki-sh, Yamaguchi 93, 7500093, JP)
向野 隆 (〒93 山口県下関市彦島西山町１丁目１番１号 彦島製錬株式会社 機能粉工場内 Yamaguchi, 7500093, JP)
FUJIMOTO, Taku (Ltd. Engineered Metal Powders Plant 1-1, Nishiyamacho 1-chome, Hikoshima, Shimonoseki-sh, Yamaguchi 93, 7500093, JP)
Application Number:
JP2007/054682
Publication Date:
September 20, 2007
Filing Date:
March 09, 2007
Export Citation:
Assignee:
MITSUI MINING & SMELTING CO., LTD. (11-1, Osaki 1-chome Shinagawa-k, Tokyo 84, 1418584, JP)
三井金属鉱業株式会社 (〒84 東京都品川区大崎一丁目１１番１号 Tokyo, 1418584, JP)
MUKUNO, Takashi (Ltd. Engineered Metal Powders Plant 1-1, Nishiyamacho 1-chome, Hikoshima, Shimonoseki-sh, Yamaguchi 93, 7500093, JP)
向野 隆 (〒93 山口県下関市彦島西山町１丁目１番１号 彦島製錬株式会社 機能粉工場内 Yamaguchi, 7500093, JP)
三井金属鉱業株式会社 (〒84 東京都品川区大崎一丁目１１番１号 Tokyo, 1418584, JP)
MUKUNO, Takashi (Ltd. Engineered Metal Powders Plant 1-1, Nishiyamacho 1-chome, Hikoshima, Shimonoseki-sh, Yamaguchi 93, 7500093, JP)
向野 隆 (〒93 山口県下関市彦島西山町１丁目１番１号 彦島製錬株式会社 機能粉工場内 Yamaguchi, 7500093, JP)
International Classes:
B22F9/24; B22F1/00; H01B5/00; H01B13/00
Attorney, Agent or Firm:
YOSHIMURA, Katsuhiro (Omiya F Bldg. 5-4, Sakuragicho 2-chome, Omiya-ku, Saitama-sh, Saitama 54, 3300854, JP)
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