Coated phosphor articles

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1989-08-21

1993-03-23

Bell, Janyce

Coating processes

Electrical product produced

Fluorescent or phosphorescent base coating

427 64, 427 67, 427215, 427226, 4273722, B05D 0000

Patent

active

051962292

ABSTRACT:
Phosphor particles are coated with a continuous, non-particulate, conformal coating of a metal oxide by suspending the phosphor particles in a gel solution containing a metal alkoxide. The gel suspension is then gelled after which the gelled suspension is dried, during which process the metal alkoxide is converted to metal oxide which coats the particles. Such coated phosphor particles can improve maintenance of lamps in which they are employed.

REFERENCES:
patent: 3544354 (1970-12-01), Kachel
patent: 3927224 (1975-12-01), Levene

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