Neutral colored glass compositions

Details Neutral colored glass compositions Neutral colored glass compositions

C - Chemistry, Metallurgy

03

C

C03C 3/087 (2006.01) C03C 3/089 (2006.01) C03C 3/095 (2006.01) C03C 4/02 (2006.01) C03C 4/08 (2006.01)

Patent

CA 2239172

A solar heat reducing and ultraviolet absorbing soda-lime-silica glass of a neutral tint and high visible light transmittance. The glass has the essential colorants of from about 0.1 to about 0.7 weight percent Fe2O3 (total iron), and either from about 0.1 to about 1.0 weight percent of a compound selected from the group consisting of titanium dioxide, vanadium pentoxide, and ceric oxide, or alternatively from about 0.1 to about 2.0 weight percent of a combination of colorants selected from the group, and having a ferrous value of less than 35 percent.

L'invention concerne un verre calcaire natron absorbant les ultra-violets, réduisant la chaleur solaire et présentant un facteur élevé de transmission de la lumière visible. Le verre comporte des colorants essentiels, à raison d'environ 0,1 à environ 0,7 pour cent en poids de Fe¿2?O¿3? (fer total) et environ 0,1 à environ 1,0 pour cent en poids d'un composé sélectionné dans le groupe se composant de dioxyde de titanium, de pentoxyde de vanadium et d'oxyde cérique, ou éventuellement, entre environ 0,1 et environ 2,0 pour cent en poids d'un mélange de colorants sélectionnés dans ce groupe, et dont la valeur ferreuse est inférieure à 35 pour cent.

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