Color cathode ray tube phosphors coated by a wetting agent

Details Color cathode ray tube phosphors coated by a wetting agent Color cathode ray tube phosphors coated by a wetting agent

Filed on

1979-01-02

Date issued

1979-11-20

Examiner

Silverberg, Sam

Patent Class

Coating processes

SubClass

Electrical product produced

SubSubClass

Fluorescent or phosphorescent base coating

Other Related Categories

427220, B05D 512

Type

Patent

Status

active

Patent number

041751434

Description

ABSTRACT:
A process for increasing the wetting capabilities of phosphors employed in color cathode ray tubes includes coating the phosphors with a wetting agent which is organic, substantially non-ionic, water or alcohol soluble at 20.degree. C. to 25.degree. C., non-reactive with dichromate sensitized polyvinyl alcohol within the temperature range of about 20.degree. C. to 480.degree. C. and vaporizable at a temperature above about 60.degree. C. and below 480.degree. C. Use of the process reduces agglomeration of phosphor particles when used in dry phosphor screening techniques.

REFERENCES:
patent: 3025161 (1962-03-01), Rychlewski
patent: 3402065 (1968-09-01), McDondlad
patent: 3428454 (1969-02-01), Angelucci
patent: 3440077 (1969-04-01), Dapolito
patent: 3483010 (1969-12-01), Glovatsky
patent: 3544350 (1970-12-01), Viers
patent: 3753710 (1973-08-01), Jones

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