Lead- and barium-free crystal glass having high optical transmis

Details Lead- and barium-free crystal glass having high optical transmis Lead- and barium-free crystal glass having high optical transmis

1993-04-12

1995-07-18

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 70, 501903, C03C 3087, C03C 3097

Patent

active

054341116

ABSTRACT:
Lead- and barium-free crystal glass for the production of high-quality glasses and domestic articles, having high optical transmission, a refractive index n.sub.D of greater than 1.52, a density of at least 2.45 g/cm.sup.3, high hydrolytic resistance, good solarization resistance, and a K.sub.2 O+ZnO content of greater than 10% by weight, the glass system being based on an alkali-lime-silicate glass containing TiO.sub.2, ZrO.sub.2, Nb.sub.2 O.sub.3 and possibly Ta.sub.2 O.sub.5 and/or combinations thereof.

REFERENCES:
patent: 2901365 (1959-08-01), Seymour et al.
patent: 3013888 (1961-12-01), de Lajarte
patent: 4012131 (1977-03-01), Krohn et al.
patent: 4036623 (1977-07-01), Deeg et al.
patent: 4264131 (1981-04-01), Sawamura et al.
patent: 4367012 (1983-01-01), Ikeda et al.
patent: 4562161 (1985-12-01), Mennemann et al.
patent: 4701425 (1987-10-01), Baker et al.
patent: 5300467 (1994-04-01), Ishizaki et al.
patent: 5320985 (1994-06-01), Enomoto
Chemical Abstracts, 93(10):100398z (Sep. 8, 1980).

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