Blue-green colored glass composition

C - Chemistry – Metallurgy – 03 – C

Patent

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C03C 3/087 (2006.01) C03C 4/02 (2006.01)

Patent

CA 2218646

A moderate visible light transmitting soda-lime-silica glass of a blue green tint having, at a nominal 4mm thickness, a visible light transmittance of about 10% to about 70% and a direct solar heat transmittance of at least 5% less than the visible light transmittance. The soda-lime-silica glass composition includes the essential ingredients of about 1 to about 3 weight percent Fe2O3, about 0.1 to about 1 weight percent TiO2, and about 0 to 500 ppm Co3O4 with a ferrous iron to total iron content of about 10% to about 37% by weight.

La présente invention concerne un verre sodo-silico-calcique teinté en bleu-vert et modérément transparent pour la lumière visible. A l'épaisseur nominale de 4mm, sa transparence à la lumière visible est comprise entre environ 10 % et environ 70 %, pour une conduction de la chaleur solaire directe d'au moins 5 % inférieur au coefficient de transparence de la lumière visible. Les ingrédients pour cette composition de ce verre sodo-silico-calcique sont principalement le Fe2O3 à raison d'environ 1 % à environ 3 % de la masse, le TiO2 à raison d'environ 0,1 % à environ 1 % de la masse, et le Co3O4 à raison d'environ 0 ppm à environ 500 ppm, le fer ferreux étant présent à raison d'environ 10 % à environ 37 % de la masse totale du fer.

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