Phototropic glass with a brown tint in the irradiated state

Details Phototropic glass with a brown tint in the irradiated state Phototropic glass with a brown tint in the irradiated state

1983-05-31

1984-11-27

McCarthy, Helen M.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

65117, 501903, C03C 326

Patent

active

044851782

ABSTRACT:
A new phototropic glass in which the phototropic properties arise from precipitations of silver halide and which in the unirradiated condition is slightly tinted or completely colorless while showing a brown color in the light-exposed condition, comprises, in known phototropic glass compositions, an additional content of at least 0.001 wt % of TeO.sub.2 and/or Yb.sub.2 O.sub.3.

REFERENCES:
patent: 3902909 (1975-09-01), Gliemeroth
patent: 3923529 (1975-12-01), Araujo
patent: 4036624 (1977-07-01), Krohn et al.
patent: 4043781 (1977-08-01), De Munn et al.
patent: 4154590 (1979-05-01), Menyhart
patent: 4190451 (1980-02-01), Hares et al.
patent: 4251278 (1981-02-01), Hares
patent: 4349634 (1982-09-01), Owen et al.
patent: 4358542 (1982-11-01), Hares et al.

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