Nof Corporation

Tatsuya Kozu

Eui-chul Kang

Toshinobu Fujimura

Masaya Hikita

Koichi Aoki

Eui-Chul Kang

Provided are a silver element containing silver acetonedicarboxylate with high silver content, and capable of providing a silver element with excellent electrical conductivity, flatness, and adhesivity through heating even for a short time at a low temperature of below the decomposition temperature of the silver salt, and having excellent storage stability, as well as a substrate having a silver element formed thereon with the composition. The composition is characterized by a particular ratio of silver compound (A) represented by formula (1) and amine compound (B) represented by formula (2): (R: H, &#x2014;(CY)a-CH, &#x2014;((CH)b-O&#x2014;CHZ)c-CH; R: &#x2014;(CY)d-CH, &#x2014;((CH)e-O&#x2014;CHZ)f-CH, Y: H, &#x2014;(CH)g-CH; Z: H, &#x2014;(CH)h-CH; a: 0-8; b: 1-4; c: 1-3; d: 1-8; e: 1-4; f: 1-3; g: 1-3; h: 1-2).

Silver-containing composition, and base for use in formation of silver element

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): (R: hydrogen atom or methyl group; R: &#x2014;(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.

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Tsukuba, Japan

Tatsuya Kozu