Bronze glass composition

Details Bronze glass composition Bronze glass composition

C - Chemistry, Metallurgy

03

C

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

Patent

CA 2172086

A glass composition having a bronze color and a luminous (visible) transmittance of 70% or greater. The base glass is a soda-lime-silica composition and iron and selenium are added as colorants. In one particular embodiment of the invention, a bronze colored glass with a luminous transmittance (C.I.E. illuminant A) of 70% and higher at a thickness of 4.1 millimeters may be attained by using as colorants: 0.4 to 0.6 wt.% Fe2Og, 0.09 to 0:17 wt.% FeO and 3 to 11 PPM Se. In addition, it is preferred that the total solar energy transmittance be no greater than 60%.

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