METHOD FOR PRODUCING SILVER NANOPARTICLE SUITABLE FOR FINE WIRING, AND POWDER OBTAINED THEREBY AND DISPERSION LIQUID

摘要

PROBLEM TO BE SOLVED: To provide a method for producing silver nanoparticles each having the property of hardly forming a defective coating film when applied, the silver nanoparticles obtained thereby and a dispersion liquid of the silver nanoparticles. SOLUTION: The method for producing silver nanoparticles includes the steps of: adding an amine compound having≥15°C solidifying point and 100-1,000 molecular weight to alcohol having 80-200°C boiling point; and reducing a silver ion in the amine compound-added alcohol to coat the surface of silver with the amine compound and obtain silver powder. The amine compound to be used has preferably≤83 iodine value. Fig.2 shows an example of a coating film with excellent smoothness having hardly any defects, while Fig.3 shows an example of a defective coating. film in which white spots are present at several places. COPYRIGHT: (C)2011,JPO&INPIT