Invention Grant
US07884039B2 Dark grey soda-lime-silica glass composition which is intended for the production of glazing 有权
用于生产玻璃的深灰色钠钙硅石玻璃组合物

Dark grey soda-lime-silica glass composition which is intended for the production of glazing
Abstract:
The invention relates to a dark gray soda-lime silicate glass composition which includes a coloring part essentially consisting of the compounds below in contents varying within the following weight limits: Fe2O3 (total iron)0.7 to 0.95% CoO50 to 80 ppm NiO400 to 700 ppm or Fe2O3 (total iron)0.7 to 0.95% CoO200 to 300 ppm NiO1500 to 1900 ppm said composition being free of selenium, having a redox of 0.40 or less, and the glass having a light transmission factor (TLA) under illuminant A of 50% or less and an overall energy transmission factor (TE) of less than 45%, these being measured for a thickness of 3.85 mm. The invention also relates to glass sheets, optionally thermally toughened, obtained from the aforementioned composition and to glazing comprising at least one of these sheets, especially as “privacy” windows for automobiles.
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