Colored glass compositions and glazings produced therewith

Details Colored glass compositions and glazings produced therewith Colored glass compositions and glazings produced therewith

1993-04-07

1994-10-04

Group, Karl

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501904, 501905, C03C 3078, C03C 408

Patent

active

053526406

ABSTRACT:
The invention relates to a colored glass composition for producing glazings for use, e.g., as automobile sunroofs. The colored glass according to the invention is a soda-lime-silica glass comprising, as coloring agents, 1.4 to 4% iron oxide expressed as Fe.sub.2 O.sub.3 and 0 to 0.05% cobalt oxide, with the cobalt oxide exceeding about 0.02% when the Fe.sub.2 O.sub.3 is below about 2% and, optionally, selenium and chromium oxide, whereby the sum of the CoO+Se+Cr.sub.2 O.sub.3 is preferably less than about 0.24% by weight. The glass of the invention has a total light transmission factor under illuminant A equal to or below approximately 20% and a total energy transmission factor equal to or below approximately 12% for a thickness of 3.85 mm.

REFERENCES:
patent: 2524719 (1950-10-01), Tillyer
patent: 4104076 (1978-08-01), Pons
patent: 4500567 (1985-02-01), Kato et al.
patent: 4525462 (1985-06-01), Behr
patent: 4873206 (1989-10-01), Jones
Chemical Abstracts, vol. 98, No. 2, Jan. 10, 1983, No. 7450D, p. 177.
Chemical Abstracts, vol. 88, No. 24, Jun. 12, 1978, No. 175980P, p. 356.
Chemical Abstracts, vol. 107, No. 18, Nov. 2, 1987, No. 160079P, p. 371.

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