| abstract |
By applying a polyol method which is a liquid phase method suitable for mass production, silver fine particles, particularly metal, having an average particle size of 30 nm or less, extremely high particle size uniformity, and excellent dispersibility Provided are a method for producing a silver colloid solution containing silver fine particles suitable as a pigment for a glossy ink, and silver fine particles obtained by the production method and a dispersion thereof. The method for producing a silver colloid solution according to the present invention comprises 1 to 15% by mass of a silver compound having an average particle size of 10 μm or less and a water-soluble polymer as a dispersant in the silver compound. A silver colloid solution comprising silver fine particles having an average particle diameter of 30 nm or less obtained by adding 5 to 80% by mass with respect to the silver content and then heating and reducing the solution at 100 ° C. or less. [Selection figure] None |