Metallic Copper Dispersion, Method For Manufacturing Same, And Usage For Same

摘要

The purpose of the present invention is to provide a metallic copper dispersion: capable of maintaining dispersion stability of metallic copper particles for a long period of time; suitable for inkjet printing, spray coating, or the like; and capable of allowing a metallic copper-containing film having an excellent electrical conductivity and metallic color tone to be manufactured in a simple manner by performing low-temperature heating or plasma irradiation after application. The metallic copper dispersion is a dispersion containing at least an organic solvent, a polymer dispersant, and metallic copper particles having gelatin on the particle surface, wherein the metallic copper particles in the dispersion have a cumulative 50% particle size (D50) of 1-130 nm and a cumulative 90% particle size (D90) of 10-300 nm, and the polymer dispersant has an amine number of 10-150 mgKOH/g. The metallic copper dispersion is manufactured by reducing copper oxide in an aqueous solvent in the presence of gelatin, then performing solid-liquid separation, and then mixing the obtained metallic copper particles having gelatin on the particle surface and the polymer dispersant into the organic solvent.

主权项

1. A metallic copper dispersion liquid comprising at least metallic copper particles having a gelatin on surfaces thereof, a polymeric dispersant, and an organic solvent, wherein
the polymeric dispersant has an amine value has an amine value of 10 to 150 mgKOH/g, and the metallic copper particles have a 50% cumulative particle diameter (D50) of 1 to 130 nm and a 90% cumulative particle diameter (D90) of 10 to 300 nm.