| 摘要 |
Glass composition intended for the manufacture of windows that absorb ultraviolet and infrared radiation, comprising the oxides below, in contents varying within the following limits by weight: SiO2 65-80% Al2O3 0-5% B2O3 0-5% CaO  5-15% MgO 0-2% Na2O  9-18% K2O  0-10% BaO 0-5% characterized in that it additionally comprises the absorbent agents below, in contents varying within the following limits by weight: Fe2O3 (total iron) 0.7 to 1.6% CeO2 0.1 to 1.2% TiO2   0 to 1.5% the glass having a redox factor of 0.23 or less and containing no tungsten oxide WO3.
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