Title:
ELECTRICALLY CONDUCTIVE ULTRAFINE-POWDERED TIN DIOXIDE AND PRODUCTION THEREOF
Document Type and Number:
Japanese Patent JP3456540
Kind Code:
B2
Abstract:
PURPOSE: To provide the nontoxic, safe tin dioxide, free from blue-black color due to antimony, excellent in transparency in itself, and capable of giving any color tone through its combination with colorants.
CONSTITUTION: The objective electrically conductive ultrafine tin dioxide consisting virtually of tin dioxide and containing no dopant, having the following characteristics: (1) particle diameter for D90 in particle size distribution: 0.01-5μm; (2) specific surface area: 5-100m2/g, and (3) volume resistivity: 10-1-104Ω.cm. The ultrafine tin dioxide can be obtained by the following process: a reaction vessel is charged with a stannic salt solution and a neutralizing the solution separately and simultaneously, immediately followed by high-speed agitation of both the solutions together; in this case, the inside of the vessel is maintained at a specified constant pH level within the pH range of 2-12 and a precipitate is deposited, recovered, dried, and then baked in an inert or weakly reductive atmosphere to impart the objective tin dioxide with electrical conductivity.
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Inventors:
Hisao Hayashi
Housuke Sato
Nobuyuki Kasahara
Katsuhiko Yoshimaru
Housuke Sato
Nobuyuki Kasahara
Katsuhiko Yoshimaru
Application Number:
JP16592993A
Publication Date:
October 14, 2003
Filing Date:
June 14, 1993
Export Citation:
Assignee:
Mitsui Mining & Smelting Co., Ltd.
International Classes:
C01G19/02; C08K3/22; C09D5/24; H01B1/00; H01B1/08; (IPC1-7): C01G19/02; C08K3/22; C09D5/24; H01B1/00; H01B1/08
Domestic Patent References:
| JP5282698A | ||||
| JP621573B1 | ||||
| JP621572B2 |
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