Copper-cadmium-silver photochromic glass

Details Copper-cadmium-silver photochromic glass Copper-cadmium-silver photochromic glass

1976-07-28

1978-02-28

McCarthy, Helen M.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 52, 106DIG6, 252300, C03C 304, C03C 308, C03C 326

Patent

active

040765440

ABSTRACT:
Copper, cadmium, silver and halogen-containing glass compositions suitable for the production of photochromic glass articles comprising these constituents in a separated, particulate photochromic phase are described. The glasses exhibit a characteristic copper-cadmium halide absorption inflection in the near ultraviolet, and are surface-darkenable on exposure to ultraviolet and short-wavelength visible light. However, they also exhibit optical bleaching characteristics and a variety of dark-state colors not previously obtained in surface darkening glasses.

REFERENCES:
patent: 3208860 (1965-09-01), Armistead et al.
patent: 3325299 (1967-06-01), Araujo
patent: 3328182 (1967-06-01), Araujo et al.
patent: 3615771 (1971-10-01), Meiling
patent: 3703388 (1972-11-01), Araujo et al.
patent: 3875321 (1975-04-01), Gliemeroth
patent: 3902909 (1975-09-01), Gliemeroth
patent: 3950591 (1976-04-01), Gliemeroth
patent: 3954485 (1976-05-01), Seward et al.

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