METHOD FOR PRODUCING SILVER PARTICLE, SILVER PARTICLE-CONTAINING COMPOSITION CONTAINING THE SILVER PARTICLE AND ITS USE

摘要

PROBLEM TO BE SOLVED: To provide plate-shaped silver particles having excellent dispersibility using a low molecule based dispersant, to provide a method for producing the same, to provide a silver particle-containing composition containing the silver particles, and to provide its use.

SOLUTION: The method for producing silver particles comprises: a stage where an aqueous solution containing both of hydroxyl carboxylic acid or its derivative with a molecular weight of≤260 acting as an aqueous dispersant and a silver salt is admixed with a prescribed ratio of dimethylamine borane or hydrazine as a reducing agent to prepare a mixed liquid, and the silver ions in the mixed liquid are brought into reduction reaction, so as to obtain a grain-shaped silver particle colloidal solution in which hydroxyl carboxylic acid or its derivative is stuck to each surface of the silver particles as an aqueous dispersant; and a stage where the obtained grain-shaped silver particle colloidal solution is irradiated with light from a light source with light in the visible region of 380 to 800 nm as the main emitting region, thus a plate-shaped silver particle colloidal solution in which hydroxyl carboxylic acid or its derivative is stuck to each surface of the silver particles as an aqueous dispersant is obtained.

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