Pigment coated phosphor and process for manufacturing the same

Details Pigment coated phosphor and process for manufacturing the same Pigment coated phosphor and process for manufacturing the same

1977-11-18

1979-05-01

Esposito, Michael F.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

428407, 427 68, 427 71, 427218, 427220, 2523014S, 2523014P, 2523016S, C09K 1102, C09K 1142

Patent

active

041524837

ABSTRACT:
On the surface of a phosphor, pigment particles are uniformly adhered by a layer of a gelatin-gum arabic mixture. A process for manufacturing such a pigment coated phosphor includes the steps of preparing an aqueous solution of gelatin and an aqueous solution of gum arabic, allowing the phosphor to disperse homogeneously into one of these aqueous solutions, allowing the pigment particles to disperse homogeneously into the other aqueous solution, and mixing the so obtained phosphor and pigment dispersions.

REFERENCES:
patent: 3275466 (1966-09-01), Kell
patent: 3308326 (1967-03-01), Kaplan
patent: 3875449 (1975-04-01), Byler
patent: 3886394 (1975-05-01), Lipp
patent: 4020231 (1977-04-01), Hedler
patent: 4021588 (1977-05-01), Royce
patent: 4049845 (1977-09-01), Lozier
Bennett, Concise Chemical & Technical Dictionary, pp. 520-521, (1974).
Hawley, Condensed Chemical Dictionary, Van Nostrand Reinhold Co., (1971), p. 75.

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