Invention Grant
- Patent Title: Dark grey soda-lime-silica glass composition which is intended for the production of glazing
- Patent Title (中): 用于生产玻璃的深灰色钠钙硅石玻璃组合物
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Application No.: US10593329Application Date: 2005-03-21
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Publication No.: US07884039B2Publication Date: 2011-02-08
- Inventor: Laurent Teyssedre , Lionel Homo
- Applicant: Laurent Teyssedre , Lionel Homo
- Applicant Address: FR Courbevoie
- Assignee: Saint-Gobain Glass France
- Current Assignee: Saint-Gobain Glass France
- Current Assignee Address: FR Courbevoie
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: FR0402898 20040319
- International Application: PCT/FR2005/000697 WO 20050321
- International Announcement: WO2005/095297 WO 20051013
- Main IPC: C03C3/087
- IPC: C03C3/087

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.
Public/Granted literature
- US20070191208A1 Dark grey soda-lime-silica glass composition which is intended for the production of glazing Public/Granted day:2007-08-16
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