Grey glass composition

Details Grey glass composition Grey glass composition

2006-12-19

2006-12-19

Group, Karl (Department: 1755)

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

C501S070000, C501S904000, C501S905000

Reexamination Certificate

active

07151065

ABSTRACT:
A grey glass composition employing in its colorant portion at least iron (Fe2O3/FeO), cerium, cobalt and selenium is provided. The glass allows high visible transmission, and satisfactory IR and UV absorption, while at the same time achieving desired grey color. In certain example embodiments, the colorant portion includes, or may consist essentially of:total iron (expressed as Fe2O3): 0.25 to 0.70%cerium oxide: 0.01 to 1.0%selenium:0.0001 to 0.05%cobalt oxide:0.0001 to 0.05%titanium oxide:   0 to 1.0%glass redox:>=0.30.

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