| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique which can obtain silver fine powder in which only silver nanoparticles having extremely high dispersibility are sorted at a high yield without adding a reduction auxiliary agent. SOLUTION: Disclosed is a method for producing silver fine powders comprising: a process A where a solution in which a silver compound is dissolved into a mixed solvent of primary amine X with a molecular weight of 200 to 400 having an unsaturated bond and 2-octanol is held at 130 to 180°C, thus, utilizing the reduction force of the 2-octanol, silver particles are precipitated, so as to obtain slurry in which silver particles coated with an organic substance (protective material) are present; a process B where the slurry is subjected to solid-liquid separation, so as to recover a solid content; and a process C where the solid content is cleaned, and is thereafter subjected to solid-liquid separation, so as to recover the cleaned solid content. COPYRIGHT: (C)2009,JPO&INPIT
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