Tinted opal glass

Details Tinted opal glass Tinted opal glass

1980-06-17

1982-01-19

McCarthy, Helen M.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 59, 501 64, C03C 304

Patent

active

043115292

ABSTRACT:
The present invention is concerned with the production of spontaneous opal glasses which, after thermal tempering, demonstrate a dense coloration ranging from ivory through yellow-beige to tan to a grayish-brown appearance, consisting essentially, by weight on the oxide basis, of 8-9% Na.sub.2 O, 2-2.5% K.sub.2 O, 5-6.5% CaO, 8-10% ZnO, 1-2% B.sub.2 O.sub.3, 10-11% Al.sub.2 O.sub.3, 3-4% F, 0.005-0.1% NiO, 0-2% CeO.sub.2, 0-4%TiO.sub.2, 0.5-6% CeO.sub.2 +TiO.sub.2, 0-0.5% As.sub.2 O.sub.3, and 57-61% SiO.sub.2.

REFERENCES:
patent: 3673049 (1972-06-01), Giffen, et al.
patent: 3681098 (1972-08-01), Dumbaugh et al.
Weyl, W. A., Colored Glasses, pub. by Pall Mall, London (1951) p. 200; pp. 212-213; 232-233.

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