| 摘要 |
<p>The invention relates to a dark grey soda-lime-silica-type glass composition comprising a colouring part which essentially contains the compounds below at a concentration between the following weight limits: 0.7 to 0.95 % Fe2O3 (total iron), 50 to 80 ppm CoO and 400 to 700 ppm NiO, or 0.7 to 0.95 % Fe2O3 (total iron), 200 to 300 ppm CoO and 1500 to 1900 ppm NiO, said composition being free from selenium and having a redox of less than or equal to 0.4. Moreover, the glass has a light transmission factor under illuminant A (TLA) of less than or equal to 50 % and an overall energy transmission factor (TE) of less than 45 %, which are measured for a thickness of 3.85 mm. The invention also relates to the optionally-heat-tempered sheet of glass obtained from the aforementioned composition and to glazing comprising at least one of said sheets, e.g. as privacy glazing for motor vehicles.</p> |
