Silver nanoparticles, method for producing same, silver nanoparticle dispersion liquid, and base provided with silver material

摘要

Provided are silver nanoparticles having excellent dispersion stability and capable of forming on a substrate a silver element, such as a silver film or line, having excellent electrical conductivity and adhesivity through heating. A method for producing the silver nanoparticles, its dispersion liquid, and a substrate having a silver element formed thereon using the dispersion liquid are disclosed. The silver nanoparticles contain silver compound (A) of formula (1):;
amine compound (B) having a primary amino group; and polymer (C) obtained by polymerization of a monomer composition containing diol (meth)acrylate compound (c1) having a urethane bond of formula (2):
;
(R1: hydrogen atom or methyl group; R2: —(CH2)n-; n: 1 to 4), and at least one monomer (c2) selected from (meth)acrylate monomers, acrylamide monomers, vinyl monomers, vinyl ether monomers, or monomers having an epoxy group.

主权项

1. A method for preparing silver nanoparticles comprising reduction treatment of a silver-containing composition comprising:
silver compound (A) represented by formula (1): amine compound (B) having a primary amino group; and polymer (C) obtained by polymerization of a monomer composition comprising diol (meth)acrylate compound (c1) having a urethane bond represented by formula (2):wherein R1 is a hydrogen atom or a methyl group, R2 is —(CH2)n—, and n is an integer of 1 to 4 , and at least one monomer (c2) selected from (meth)acrylate monomers, acrylamide monomers, vinyl monomers, vinyl ether monomers, or monomers having an epoxy group;
wherein a content of said amine compound (B) is 1 to 50 mole equivalent of silver elements in said silver compound (A), and a content of said polymer (C) is 0.1 to 0.9 parts by mass with respect to 100 parts by mass of silver elements in said silver compound (A).