Saint-gobain Glass France

Lionel Homo

Laurent Teyssedre

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: said composition being free of selenium, having a redox of 0.40 or less, and the glass having a light transmission factor (T) under illuminant A of 50% or less and an overall energy transmission factor (T) of less than 45%, these being measured for a thickness of 3.85 mm.

Dark grey soda-lime silica glass composition which is intended for the production of glazing

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: or said composition being free of selenium, having a redox of 0.40 or less, and the glass having a light transmission factor (T) under illuminant A of 50% or less and an overall energy transmission factor (T) 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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Coye la Foret, France

Lionel Homo