Method for forming a silica film on a face panel of a cathode ra

Details Method for forming a silica film on a face panel of a cathode ra Method for forming a silica film on a face panel of a cathode ra

1997-12-16

2000-06-20

Patel, Nimeshkumar D.

Electric lamp and discharge devices

Cathode ray tube

Envelope

313478, 427 64, H01J 3100, B05D 506

Patent

active

060781351

ABSTRACT:
A method for forming a silica film on a face panel is disclosed. The method includes steps of preparing a first composite having a staring material of a silica-titania two component system where alcohol is added as a catalyst; preparing a second composite having a titaniumalkoxide or a derivative of the titaniumalkoxide as a catalyst; mixing the first and second composites at a predetermined ratio; agitating the face panel; and calcinating the coated colloidal solution at a temperature of 160-200.degree. C. The silica-titania two-component system is selected from a group consisting of a tetraethyl-silicate and a tetraethyl-silicate oligomer. The tetraethyl-silicate oligomer has a degree of polymerization of 40, 51 or 56.

REFERENCES:
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patent: 5523649 (1996-06-01), Tong et al.
patent: 5652477 (1997-07-01), Tong et al.
patent: 5660876 (1997-08-01), Kojima et al.
patent: 5683952 (1997-11-01), Onozawa et al.

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