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Title:
FINE PARTICLE DISPERSION AND METHOD FOR PRODUCING FINE PARTICLE DISPERSION
Document Type and Number:
WIPO Patent Application WO/2008/013199
Kind Code:
A1
Abstract:
Disclosed is a fine particle dispersion which is excellent in dispersibility and storage stability. Specifically disclosed is a fine particle dispersion wherein fine particles (P) composed of one or more of metals, alloys and metal compounds and having an average primary particle diameter of 1-150 nm, at least a part of whose surfaces are covered with a polymer dispersing agent (D) are dispersed in a mixed organic solvent. This fine particle dispersion is characterized in that the weight ratio (D/P) between the polymer dispersing agent (D) covering the surfaces of the fine particles (P) in the dispersion and the fine particles (P) is 0.001-10, and the mixed organic solvent is (i) a mixed organic solvent containing 50-95% by volume of an organic solvent (A) having an amide group and 5-50% by volume of a low-boiling point organic solvent (B) having a boiling point at normal pressure of 20-100˚C, (ii) a mixed organic solvent containing 50-95% by volume of an organic solvent (A) having an amide group and 5-50% by volume of an organic solvent (C) having a boiling point at normal pressure of more than 100˚C and composed of an alcohol having one or more hydroxy groups in a molecule and/or a polyhydric alcohol, or (iii) a mixed organic solvent containing 50-94% by volume of an organic solvent (A) having an amide group, 5-49% by volume of a low-boiling point organic solvent (B) having a boiling point at normal pressure of 20-100˚C and 1-45% by volume of an organic solvent (C) having a boiling point at normal pressure of more than 100˚C and composed of an alcohol having one or more hydroxy groups in a molecule and/or a polyhydric alcohol.

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Inventors:
HARADA, Takuya (2-3, Marunouchi 2-chom, Chiyoda-ku Tokyo 22, 1008322, JP)
原田 琢也 (〒22 東京都千代田区丸の内２丁目２番３号 古河電気工業株式会社内 Tokyo, 1008322, JP)
FUJIWARA, Hidemichi (2-3, Marunouchi 2-chom, Chiyoda-ku Tokyo 22, 1008322, JP)
藤原 英道 (〒22 東京都千代田区丸の内２丁目２番３号 古河電気工業株式会社内 Tokyo, 1008322, JP)
TAKASHIBA, Kazuhiro (2-3, Marunouchi 2-chom, Chiyoda-ku Tokyo 22, 1008322, JP)
高柴 和宏 (〒22 東京都千代田区丸の内２丁目２番３号 古河電気工業株式会社内 Tokyo, 1008322, JP)
YAMANAKA, Nobumitsu (2-3, Marunouchi 2-chom, Chiyoda-ku Tokyo 22, 1008322, JP)
Application Number:
JP2007/064577
Publication Date:
January 31, 2008
Filing Date:
July 25, 2007
Export Citation:
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Assignee:
THE FURUKAWA ELECTRIC CO., LTD. (2-3 Marunouchi 2-chome, Chiyoda-ku, Tokyo 22, 1008322, JP)
古河電気工業株式会社 (〒22 東京都千代田区丸の内２丁目２番３号 Tokyo, 1008322, JP)
HARADA, Takuya (2-3, Marunouchi 2-chom, Chiyoda-ku Tokyo 22, 1008322, JP)
原田 琢也 (〒22 東京都千代田区丸の内２丁目２番３号 古河電気工業株式会社内 Tokyo, 1008322, JP)
FUJIWARA, Hidemichi (2-3, Marunouchi 2-chom, Chiyoda-ku Tokyo 22, 1008322, JP)
藤原 英道 (〒22 東京都千代田区丸の内２丁目２番３号 古河電気工業株式会社内 Tokyo, 1008322, JP)
TAKASHIBA, Kazuhiro (2-3, Marunouchi 2-chom, Chiyoda-ku Tokyo 22, 1008322, JP)
高柴 和宏 (〒22 東京都千代田区丸の内２丁目２番３号 古河電気工業株式会社内 Tokyo, 1008322, JP)
International Classes:
B22F9/24; B22F9/00; H01B1/22; H01B5/00
Attorney, Agent or Firm:
HOSOI, Isamu et al. (Ginzachikuyotei Bldg. 8F, 19-3 Ginza 8-chom, Chuo-ku Tokyo 61, 1040061, JP)
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