| Application Number: | 200580016259.4 | Application date: | 2005.03.21 |
| name: | Dark gray soda lime glass composition for producing window glass | ||
| Public (announcement) number: | CN1956930 | Public (announcement) day: | 2007.05.02 |
| Main classification number: | C03C3/087(2006.01)I | The original application number of the division: | |
| Classification number: | C03C3/087(2006.01)I; C03C4/02(2006.01)I; C03C4/08(2006.01)I | ||
| Award day: | priority: | 2004.3.19 FR 0402898 | |
| Application (patent) person: | Saint-Gobain Glass Factory | ||
| address: | Coopera, France | ||
| Invention (design) person: | L. Tsedeli; L. Yimeng | International application: | 2005-03-21 PCT/FR2005/000697 |
| International announcement: | 2005-10-13 WO2005/095297 method | Enter country date: | 2006.11.20 |
| Patent agency: | China Patent Agent (Hong Kong) Co., Ltd. | agent: | Liu Weisheng; Lin Sen |
The present invention relates to a dark gray soda lime glass composition comprising a colored portion which consists essentially of the following compounds in a weight range of as follows: Fe2O3 (total iron) 0.7-0.95%, CoO 50-80 ppm, NiO 400-700ppm, or Fe2O3 (total iron) 0.7-0.95%, CoO 200-300ppm, NiO 1500-1900ppm, the composition does not contain selenium, redox is lower than or equal to 0.40, the glass is at the light source A The lower light transmission coefficient (TLA) is less than or equal to 50% and the total energy transfer coefficient (TE) is less than 45%. These values ​​are measurements of a thickness of 3.85 mm. The invention further relates to a glass sheet, optionally a tempered glass sheet, obtained from the above composition, and to a glazing comprising at least one of these glass sheets, especially automotive "private" glazing.
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