ULTRAVIOLET/INFRARED ABSORBENT GLASS, ULTRAVIOLET/INFRARED ABSORBENT GLASS PLATE, ULTRAVIOLET/INFRARED ABSORBENT GLASS PLATE COATED WITH COLORED FILM, AND WINDOW GLASS FOR VEHICLE

摘要

The ultraviolet/infrared absorbent glass consisting of base glass including: 65 to 80 wt. % SiO2; 0 to 5 wt. % Al2O3; 0 to 10 wt. % MgO; 5 to 15 wt. % CaO; 10 to 18 wt. % Na2O; 0 to 5 wt. % K2O; 5 to 15 wt. % a total amount of MgO and CaO; 10 to 20 wt. % a total amount of Na2O and K2O; 0.05 to 0.3 wt. % SO3; and 0 to 5 wt. % B2O3, and colorants including: 0.2 to 0.55 wt. % the total iron oxide (T-Fe2O3) expressed as Fe2O3; 0.01 to 0.08 wt. % (excluding 0.08 wt. %) FeO; 0.8 to 2 wt. % CeO2; 0 to 0.003 wt. % CoO; and 0 to 1.5 wt. % TiO2, wherein FeO expressed as Fe2O3 is in a range of 5 to 25 wt. % (excluding 25 wt. %) of T-Fe2O3. The ultraviolet/infrared absorbent glass plate comprising the ultraviolet/infrared absorbent glass wherein the glass has the visible light transmittance of equal to or more than 80 %, the solar energy transmittance of equal to or less than 83 % and the ultraviolet transmittance of equal to or less than 17.5 %. The colored film-coated ultraviolet/infrared absorbent glass plate prepared by applying the colored film with a thickness between 30 and 300 nm including the silicon oxide and the fine grains of the gold onto the surface of the ultraviolet/infrared absorbent glass plate. The window glass of a vehicle comprising at least two glass plates laminated with an inner layer of a transparent resin or a spacing therebetween and at least one of said glass plates employing the colored film-coated ultraviolet/infrared absorbent glass plate wherein the glass has the visible light transmittance of equal to or more than 70 %, the ultraviolet transmittance of equal to or less than 15 % and the chromaticity expressed as a, b by using the Lab coordinates in ranges of -3