Process for producing pigment-coated phosphors

Details Process for producing pigment-coated phosphors Process for producing pigment-coated phosphors

1977-12-19

1980-08-26

Silverberg, Sam

Coating processes

Electrical product produced

Fluorescent or phosphorescent base coating

428407, 427 68, 427218, 427221, B05D 506, B05D 512

Patent

active

042195870

ABSTRACT:
Pigment-coated phosphors which may be used in the production of a cathode-ray tube of a high contrast for a color television receiver can be produced by adding a pigment and an anionic polymer emulsion to an aqueous suspension of a phosphor and then making the system neutral or weakly acidic or adding a cationic polymer emulsion or carrying out both of these steps so that the phosphor and the pigment may be coated with the polymer.

REFERENCES:
patent: 3544354 (1970-12-01), Kachel
patent: 4049845 (1977-09-01), Lozier et al.
"High Polymer Latices", Blackley, p. 27.

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