Glass for projection cathode ray tube faceplate

Details Glass for projection cathode ray tube faceplate Glass for projection cathode ray tube faceplate

C - Chemistry, Metallurgy

03

C

261/15, 313/35.3

C03C 3/087 (2006.01) C03C 4/08 (2006.01) H01J 29/86 (2006.01)

Patent

CA 1333405

This invention relates to glass compositions especially suitable for projection cathode ray tube faceplates which are essentially free from PbO and other readily reducible metal oxides, fluorine, ZnO, TiO2, and MgO, and which consist essentially, in weight percent, of Li2O 0.75-3 Li2O+Na2O+K2O 11-16 . Na2O 5-7 CaO+SrO+BaO 21.5-26 K2O 5-7 Al2O3 1-2 SrO 7.5-10 ZrO2 2-7 BaO 14-16 CeO2 0.4-0.8 CaO 0-3 SiO2 55-60.

593566

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