Coating material for inner coat of cathode-ray tube

Details Coating material for inner coat of cathode-ray tube Coating material for inner coat of cathode-ray tube

1996-04-02

1997-09-16

Lieberman, Paul

Compositions

Electrically conductive or emissive compositions

Elemental carbon containing

252504, 252506, 106626, 106475, 106483, H01B 104, C09C 146, C04B 1404

Patent

active

056677294

ABSTRACT:
Disclosed is a coating material for forming an electrically conductive inner coat. The coating material contains graphite particles, filler particles, an aqueous medium a dispersant and water-glass. The filler particle has a core and a membrane which covers the core. The core is composed of metallic oxide or metallic carbide, and the membrane is composed of alumina and silica, in which the ratio of the amount of the alumina to the amount of the membrane is within a range of 20 to 60% by weight. If the core is iron oxide, the used filler particles have at least 4% by weight of the membrane which contains 20 to 90% by weight of alumina and silica.

REFERENCES:
patent: 4125412 (1978-11-01), West
patent: 4379762 (1983-04-01), Chiyoda et al.
patent: 5028352 (1991-07-01), Hietak et al.
patent: 5160375 (1992-11-01), Otaki

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