PROCESS FOR PRODUCTION OF ULTRAFINE SILVER PARTICLES AND ULTRAFINE SILVER PARTICLES PRODUCED BY THE PROCESS

摘要

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.