| 简介 |
PCT No. PCT/FR95/00828 Sec. 371 Date Jun. 27, 1996 Sec. 102(e) Date Jun. 27, 1996 PCT Filed Jun. 22, 1995 PCT Pub. No. WO96/00194 PCT Pub. Date Jan. 4, 1996A silica-soda-lime glass composition suitable for making glazing. Said glass consists of 69-75 wt % SiO2, 0-3 wt % Al2O3, 0-5 wt % B2O3, 2-10 wt % CaO, 0-2 wt % MgO, 9-17 wt % Na2O, 0-8 wt % K2O, 0.2-4 wt % Fe2O3 (total iron), and 0-0.45 wt % Se, CoO, Cr2O3, NiO, CuO. The amount of tinting agents other than iron is at least 0.0002 wt % when the Fe2O3 content is 1.5 wt % or less. The composition may also contain fluorine; zinc, zirconium, cerium and titanium oxides; and less than 4 wt % barium oxide; while the sum of the percentages of alkaline earth oxides is not above 10 wt %. |
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