Dark, neutral, gray, nickel-free glass composition

Details Dark, neutral, gray, nickel-free glass composition Dark, neutral, gray, nickel-free glass composition

1988-07-05

1989-10-10

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

296211, C03C 3087

Patent

active

048732060

ABSTRACT:
A neutral, dark gray, nickel-free, soda-lime-silica glass having luminous transmittance less than 20 percent is produced with colorants consisting essentially of 0.55 to 1.0 percent by weight total iron (at least 15 percent in the ferrous state), 0.005 to 0.02 percent CoO, and 0.003 to 0.02 percent Se. The flat glass product having such a composition is particularly suitable for use in sun roofs.

REFERENCES:
patent: Re25312 (1963-01-01), Duncan et al.
patent: 2524719 (1950-10-01), Tillyer
patent: 2892726 (1959-06-01), Smith et al.
patent: 3296004 (1967-01-01), Duncan
patent: 3300323 (1967-01-01), Plumat et al.
patent: 3723142 (1973-03-01), Kato et al.
patent: 4104076 (1978-08-01), Pons

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