Medium gray colored glass with improved UV and IR absorption and

Details Medium gray colored glass with improved UV and IR absorption and Medium gray colored glass with improved UV and IR absorption and

1998-03-26

1999-11-02

Group, Karl

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501904, 501905, C03C 3087

Patent

active

059770023

ABSTRACT:
The invention is a medium color gray soda-lime-silica glass composition having excellent ultra violet and infra red absorbing ability. The colorants of the glass composition consist essentially of: greater than 0.5 but less than 0.9 wt. % total iron oxide as Fe.sub.2 O.sub.3 ; 0.1 to 1.0 wt. % manganese compound as MnO.sub.2 ; 0.0005 to 0.003 wt. % selenium as Se; 0.002 to 0.010 wt. % cobalt oxide as Co; up to 1.0 TiO.sup.2 ; the glass composition having, at 4.0 mm. thickness: 485-570 dominant wavelength, less than 5% purity of excitation, 35 to 60% light transmittance using Illuminant A, less than 40% ultra violet transmittance measured over 300-400 nm, and less than 45% infra red transmittance measured over 760-2120 nm.

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Invention Patent No. 88 652; "Clear Soda-Calcic Gray Glass," Date of Issuance of the Invention Patent Oct. 4, 1996; Owner: Glaverbel; Inventors: Daniel D'Hont and Camille DuPont.
Invention Patent No. 88 653, "Darkened Sodacalcic Gray Glass," Date of Issuance of the Invention Patent Oct. 4, 1996; Owner: Glaverbel; Inventors: Daniel D'Hont and Camille DuPont.

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