Green-colored infrared and ultraviolet radiation absorbing glass

Details Green-colored infrared and ultraviolet radiation absorbing glass Green-colored infrared and ultraviolet radiation absorbing glass

1992-12-28

1994-06-14

Green, Anthony

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

65134, C03C 3087

Patent

active

053209869

ABSTRACT:
An infrared and ultraviolet radiation absorbing glass suitable for use in building and vehicle windows, which comprises, on a weight basis, 68-72% of SiO.sub.2, 1.6-3.0% of Al.sub.2 O.sub.3, 8.5-11.0% of CaO, 2.0-4.2% of MgO, 12.0-16.0% of Na.sub.2 O, 0.5-3.0% of K.sub.2 O, 0.03-0.30% of SO.sub.3, 0.58-0.80% of total iron expressed as Fe.sub.2 O.sub.3, 0.1-0.7% of CeO.sub.2, 0.1-0.4% of TiO.sub.2 and 5-350 ppm of MnO. In the glass the ratio of ferrous iron to ferric iron is in the range from 0.50 to 0.70. The glass has a greenish tint and is well balanced in visible light transmittance, infrared radiation absorption and ultraviolet radiation absorption, and a sheet of the glass can be easily tempered by a conventional method.

REFERENCES:
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patent: 5214008 (1993-05-01), Beckwith et al.
H. Scholze: "Glas", 1977, Springer-Verlag, Berlin, 2nd edition, pp. 188-191.
Chem. Abs. vol. 87, No. 6, 1977; Abstract No. 43246y.
Database WPI, Week 7804, Derwent Pub. Ltd., London, GB (1978).
Database WPIL, Week 8631, Derwent Publ., Ltd., London, GB (1986).

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