Method for metallizing phosphor screens
Abstract
Abstract A METHOD FOR METALLIZING A PHOSPHOR SCREEN, AS FOR A CATHODE RAY TUBE, INCLUDING THE STEPS OF PRODUCING UPON THE SURFACE OF THE PHOSPHOR SCREEN A VOLATILIZABLE SUBSTRATE IN THE FORM OF A RESIN FILM FROM AN AQUEOUS FILMING EMULSION CONSISTING ESSENTIALLY OF AN ACRYLATE COPOLYMER, EVAPORATING METAL UPON THE SUBSTRATE TO FORM A METAL LAYER THEREON, AND THEN VOLATILIZING THE SUBSTRATE. IN THE DISCLOSED METHOD, THE FILMING EMULSION CONTAINS AT LEAST ONE OF (1) A NEUTRALIZING AGENT IN SUFFICIENT QUANTITY TO ADJUST THE EMULSION TO A PH IN THE RANGE OF 4.0 TO 8.0, (2) A BORIC ACID COMPLEX OF POLYVINYL ALCOHOL IN AN AMOUNT UP TO ABOUT 1.0 WEIGHT PERCENT OF THE ACRYLATE SOLIDS PRESENT IN THE EMULSION, (3) COLLOIDAL SILICA IN AN AMOUNT UP TO ABOUT 25 WEIGHT PERCENT OF THE WEIGHT OF ACRYLATE SOLIDS PRESENT IN THE EMULSION, AND (4) SOLUBLE SILICATE IN AN AMOUNT UP TO ABOUT 2 WEIGHT PERCENT OF THE ACRYLATE SOLIDS PRESENTS IN THE EMULSION.
Inventors
- 👤 Theodore A Saulnier
Bibliographic Details
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