Raw material for producing powder of indium-tin oxide aciculae a

Details Raw material for producing powder of indium-tin oxide aciculae a Raw material for producing powder of indium-tin oxide aciculae a

1996-06-12

1998-12-15

Shah, Mukund J.

Compositions

Electrically conductive or emissive compositions

Metal compound containing

2525201, 25251933, 2525181, H01B 106, H01B 108

Patent

active

058492216

ABSTRACT:
Disclosed are a powder of indium-tin oxide aciculae suitable as an electroconductive filler for an electroconductive ink to be used for forming a transparent electroconductive film, a method for producing a raw material to be used for producing the powder of indium-tin oxide aciculae, which has a major diameter of 5 .mu.m or more and a ratio of the major diameter to the minor diameter of 5 or more, an electroconductive paste capable of forming a light-transmitting electroconductive film having sufficient electroconductivity and light transmittance by printing, such as screen-printing, followed by high-temperature baking, and a light-transmitting electroconductive film to be formed from the paste. The raw material is produced by heating and concentrating an aqueous solution containing indium ions and nitrato ions to form a high-viscosity slurry followed by separating a powder of aciculae from the slurry. By calcining the raw material, a powder of indium-tin oxide aciculae is produced.

REFERENCES:
patent: 4594182 (1986-06-01), Hashimoto et al.
patent: 4824221 (1989-04-01), Endo et al.
patent: 4894184 (1990-01-01), Fukuoka et al.
patent: 5320922 (1994-06-01), Mayama et al.
patent: 5411792 (1995-05-01), Yukinobu et al.

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