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

1996-06-07

1998-11-10

Shah, Mukund J.

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423629, 502355, 2525181, 2525192, C01F 300, C01G 1500

Patent

active

058339418

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: 5071800 (1991-12-01), Iwamoto et al.
patent: 5401701 (1995-03-01), Ogawa et al.
patent: 5417816 (1995-05-01), Nakashima et al.

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