Dowa Holdings Co., Ltd.

Dowa Electronics Materials Co., Ltd.

Hirotoshi Saito

Kimitaka Sato

Daisuke Kodama

To provide thin and long silver nanowires covered with an organic protective agent containing a less amount of impurities, the silver nanowires having good dispersibility in an ink having an alcohol added thereto. Silver nanowires containing covered thereon a copolymer composition containing one or more kinds of a copolymer having a vinylpyrrolidone structural unit, and having a sulfur content Sppm of 2,000 ppm or less and a residual vinylpyrrolidone monomer content ratio VPobtained from an NMR spectrum of 6.0% or less, the silver nanowires having an average diameter of 30 nm or less and an average length of 10 &#x3bc;m or more.

Silver nanowires and method for producing same, and silver nanowire ink and transparent conductive film

A method for producing silver nanowires, containing reduction-precipitating silver in the form of wire in an alcohol solvent having dissolved therein a silver compound, the deposition being performed in the alcohol solvent having dissolved therein a chloride, a bromide, an alkali metal hydroxide, an aluminum salt, and an organic protective agent, the molar ratio Al/OH of the total Al amount of the aluminum salt dissolved in the solvent and the total hydroxide ion amount of the alkali metal hydroxide dissolved therein being from 0.01 to 0.40, the molar ratio OH/Ag of the total hydroxide ion amount of the alkali metal hydroxide dissolved in the solvent and the total Ag amount of the silver compound dissolved therein being from 0.005 to 0.50.

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Tokyo, Japan

Hirotoshi Saito