C - Chemistry – Metallurgy – 03 – C
Patent
C - Chemistry, Metallurgy
03
C
49/77
C03C 21/00 (2006.01) C03C 3/085 (2006.01) C03C 3/095 (2006.01) C03C 4/08 (2006.01) G02B 5/22 (2006.01)
Patent
CA 1084711
ION EXCHANGE-STRENGTHENED SILICATE GLASS FILTER FOR ULTRAVIOLET LIGHT Abstract of the Disclosure There is provided by the process of the invention a silicate glass which provides protection against mechanical hazards and short and long wavelength ultraviolet radiation while at the same time high transmission of light in the visible range of the spectrum is maintained. By the process of the invention, the is corporation of cerium oxide into the glass followed by ion exchange strengthening using a mixture of potassium salt and silver nitrate provide a synergistic reduction in transmission of light in the ultraviolet range of the spectrum not heretofore obtainable by the use of either cerium oxide or silver staining of the glass alone.
260455
Macrae & Co.
Sola International Inc.
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