Method for preparing haze-resistant lithium-silicate glare-reduc

Details Method for preparing haze-resistant lithium-silicate glare-reduc Method for preparing haze-resistant lithium-silicate glare-reduc

1973-06-25

1976-02-24

Smith, Ronald H.

Coating processes

Optical element produced

Transparent base

313479, 427 64, 427110, 427168, 427314, 427353, 427354, 427380, 428428, H01J 3100, B05D 502, C03C 1722

Patent

active

039405117

ABSTRACT:
A glare-reducing coating, as for a viewing surface of a cathode-ray tube, is prepared by (a) warming the surface of a support to about 30.degree. to 100.degree.C, (b) coating the warm surface with an aqueous solution containing a lithium stabilized silica sol, (c) drying the coating, (d) baking the dry coating at about 150.degree. to 450.degree.C, and then (e) subsequent to said heating step (d), washing the dry coating with hot water. The coating may contain carbon particles or carbon particles and a color-correcting dye.

REFERENCES:
patent: 1164710 (1915-12-01), Fenaroli
patent: 1581732 (1926-04-01), Hageman
patent: 2069486 (1937-02-01), Tilden
patent: 2440969 (1948-05-01), Nightingall
patent: 2576845 (1951-11-01), McDonald
patent: 3326715 (1967-06-01), Twells
patent: 3526530 (1970-09-01), Sams
patent: 3625737 (1971-12-01), Ricchezza
patent: 3635751 (1972-01-01), Long
patent: 3898509 (1975-08-01), Brown et al.

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