Method for producing metal microparticles, and metal colloidal solution containing the metal microparticles

摘要

An aqueous solution containing a polymer dispersant and a metal compound, and an aqueous solution of a reducing agent, are joined together and uniformly mixed while being subjected to reduction reaction to give metal microparticles, in a thin film fluid formed between processing surfaces arranged to be opposite to each other so as to be able to approach to and separate from each other, at least one of which rotates relative to the other, by using a reaction apparatus of uniform stirring and mixing the above aqueous solutions.