Neutral gray heat absorbing glass

Details Neutral gray heat absorbing glass Neutral gray heat absorbing glass

C - Chemistry, Metallurgy

03

C

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

Patent

CA 2143968

A low excitation purity, gray-green, heat absorbing soda-lime-silica glass having at 4 mm. control thickness a light transmittance using illuminant A of at least about 60 %, most preferably 69.5% to 76.5% LTA, ultra violet transmittance of 30.0% to 55.0%, and infra red- transmittance of 33.0% to 55.0%, with an excitation purity of less than 1.6% using illuminant C. The glass is produced with colorants consisting of: 0.45 to 0.95 percent by weight total iron oxide as Fe2O3, between 0.09 to 0.185 wt.% thereof being in the reduced iron oxide form FeO, 0.0008 to 0.003 percent Co, together with one or more of: 0 to 0.001 percent Se, 0 to 0.5 percent MnO2, and 0 to 0.003 percent NiO. The flat glass products having such a composition is particularly suitable for architectural and motor vehicle applications in any trucks and automobiles.

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