BLUE GLASS COMPOSITION FOR MAKING GLASS PANES, GLASS SHEET WITH THE COMPOSITION AND WINDOW COMPRISING THE GLASS SHEET

摘要

The invention concerns a blue coloured soda-lime-silica glass comprising the following colouring agents with content ranging within the following limits by weight: Fe2O3 (total iron): 0.2 to 0.51 %; CoO: 10 to 50 ppm; Cr2O3 10 to 300 ppm; CuO: 0- 400 ppm, the glass having a redox factor not more than 0.35, a dominant wavelength λD ranging between 485 and 489 nm, an excitation purity less than 13 % and a selectivity not less than 1.1 under a thickness ranging between 3 and 5 mm. The invention also concerns the glass sheet obtained from said composition, said sheet being designed in particular for forming a motor vehicle glazing or for the building industry.