METHOD FOR PRODUCING METAL MICROPARTICLES

摘要

The present invention addresses the problem of providing a method for producing metal microparticles in which the particle diameter and the coefficient of variation are controlled. Using at least two kinds of fluid to be processed including a fluid which contains at least one kind of reducing agent, the fluid to be processed is mixed in a thin film fluid formed between at least two processing surfaces, at least one of which rotates relative to the other, and which are disposed facing each other and capable of approaching and separating from each other, and metalmicroparticles are separated. At this time, the fluid to be processed containing one or both of the fluid which contains at least one kind of metal and/or metal compound and the fluid which contains at least one kind of reducing agent contains a water-containing polyol in which water and a polyol are mixed, and does not contain a monovalent alcohol, and the particle diameter and coefficient of variance of the separated metal microparticles is controlled by controlling the ratio of water contained in the water-containing polyol.

主权项

1. A method for producing metal microparticle wherein the method uses at least two fluids to be processed,
of them, at least one fluid to be processed is a fluid which contains at least one metal and/or metal compound, and at least one fluid to be processed other than the afore-mentioned fluid to be processed is a fluid which contains at least one reducing agent, wherein these fluids to be processed are mixed in a thin film fluid formed between at least two processing surfaces which are disposed in a position they are faced with 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, whereby separating the metal microparticle, wherein of the fluid which contains at least one metal and/or metal compound and the fluid which contains at least one reducing agent, at least any one fluid to be processed contains a water-containing polyol in which water and a polyol are mixed while not containing a monovalent alcohol, wherein by controlling ratio of water which is contained in the water-containing polyol, particle diameter of the metal microparticle to be separated and coefficient of variation thereof are controlled.