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Indium series metal particle and mfg. method thereof, coating liquid containing same, base material with covering film and dispay device

A technology of metal particles and manufacturing methods, applied in metal processing equipment, conductive materials dispersed in non-conductive inorganic materials, coatings, etc. Get metal particles, etc.

Inactive Publication Date: 2003-12-03
JGC CATALYSTS & CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In addition, the existing indium-based metal particles, even if the metal particles can be obtained, are aggregated particles, and it is difficult to obtain reproducible monodispersed metal particles. And conductivity is not ideal
Moreover, there is also the following problem, that is, in the water dispersion medium and the dispersion medium containing water, it will be doped to form hydroxides like other base metals.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] Preparation of indium-based metal particles (P-1) dispersion sol

[0103] Make indium nitrate trihydrate (In(NO 3 ) 3 ·3H 2 O) 1.6 parts by weight are dissolved in a mixed solution of 97.2 parts by weight of methanol and 1.2 parts by weight of acetylacetone as an organic stabilizer. Next, in a nitrogen atmosphere, 22 parts by weight of a sodium borohydride aqueous solution with a concentration of 1.5% by weight was added, and the mixture was stirred at 20°C for 30 minutes to prepare a dispersion of indium-based metal fine particles.

[0104] The obtained dispersion was repeatedly decanted with ethanol through a centrifugal separator to precipitate ions and salts.

[0105] Then, the indium-based metal particles that settled down last were dispersed in an ethanol solution with a concentration of 20% by weight of acetylacetone so that the ethanol solution corresponding to 1 part by weight of the indium-based metal particles reached 66.7 parts by weight to prepare an indium-b...

Embodiment 2

[0108] Preparation of indium-based metal particles (p-2) dispersion sol

[0109] Except that ethanol was used instead of methanol, everything else was the same as in Example 1, and a dispersion of indium-based metal fine particles was prepared.

[0110] Next, as in Example 1, decantation and dispersion were performed to prepare a dispersed sol of indium-based metal fine particles (P-2).

[0111] The properties of the obtained indium-based metal fine particles (P-2) dispersed sol are shown in Table 1.

Embodiment 3

[0113] Preparation of indium-based metal particles (P-3) dispersion sol

[0114] Make indium nitrate trihydrate (In(NO 3 ) 3 ·3H 2 O) 1.6 parts by weight and 5.7 parts by weight of an ethanol solution of stannous chloride with a concentration of 5% by weight are dissolved in a mixed solution of 91.5 parts by weight of methanol and 1.2 parts by weight of acetylacetone as an organic stabilizer. Next, under a nitrogen atmosphere, 23 parts by weight of sodium borohydride aqueous solution with a concentration of 1.5% by weight was added, and stirred at 20°C for 30 minutes to prepare a dispersion of indium-based metal fine particles.

[0115] Next, as in Example 1, decantation, dispersion, etc. were performed to prepare a dispersed sol of indium-based metal fine particles (P-3).

[0116] The properties of the obtained indium-based metal fine particles (P-3) dispersed sol are shown in Table 1.

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Abstract

To provide indium based metal fine particles and a dispersion sol appropriately usable for forming a transparent and conductive film having an excellent antistatic property and electromagnetic shielding property and also having an excellent manufacturing reliability and cost effectiveness. The indium based metal fine particles have a 2-200 nm average particle size. The indium based metal fine particles contain indium metal only or one or more kinds of metal components selected from among Sb, Sn, Ag, Au, Zn, Cu, Bi and Cd together with the indium metal. The indium based metal fine particles dispersion sol is obtained by dispersing the indium based metal fine particles in water and / or an organic solvent. In a method for manufacturing the indium based metal fine particles, a reducing agent is added to a mixed alcohol solution containing an indium compound and an organic stabilizing agent and having a >=40 wt.% alcohol content in the solvent.

Description

Technical field [0001] The present invention relates to indium-based metal particles having an average particle diameter of 2 to 200 nm and indium-based metal particles dispersed sol formed by dispersing the particles in water and / or an organic solvent, a method for producing the indium-based metal particles, and indium-containing metal particles Coating solution, coated substrate and display device. Background technique [0002] In order to prevent the surface of transparent substrates such as cathode ray tubes, fluorescent display tubes, liquid crystal display panels and other display panels from being charged and reflected, a transparent coating with anti-static and anti-reflection functions is generally formed on the surface. . [0003] Moreover, it is well known that electromagnetic waves are radiated from cathode ray tubes, etc. Therefore, in addition to the original anti-charge and anti-reflection, it is better to shield electromagnetic waves and the electromagnetic field ...

Claims

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Application Information

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IPC IPC(8): C09C1/62B22F1/00B22F9/18B22F9/24C03C17/06C09D1/00C09D5/24H01B1/22H01B5/14H01J29/88
CPCB22F9/24H01B1/16B22F2301/30B22F1/054
Inventor 俵迫祐二金南宪平井俊晴
Owner JGC CATALYSTS & CHEM LTD
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