MY144536A - Near-infrared absorbent green glass composition and laminated glass using the same - Google Patents

Abstract

THE PRESENT INVENTION PROVIDES A NEAR-INFRARED ABSORBENT GREEN GLASS COMPOSITION WHICH CONTAINS BASIC GLASS COMPONENTS AND 0.6 TO 1.3%TOTAL IRON OXIDE AMOUNT IN TERMS OF FE2O3 (T-FE2O3), 0 TO 2.0% CEO2 AND, 300 PPM OR LESS MNO EXPRESSED IN UNITS OF MASS AND WHEREIN A MASS RATIO (FEO RATIO) OF FEO CONVERTED INTO FE2O3 RELATIVE TO THE T-FE2O3 IS FROM 0.21 TO 0.35. FURTHER THE GLASS COMPOSITION SATISFIES AT LEAST ONE OF THE FOLLOWING A) AND B): A) WHEN THE GLASS COMPOSITION IS FORMED TO HAVE A THICKNESS IN THE RANGE OF 1.3 TO 2.4 MM, A VISIBLE LIGHT TRANSMITTANCE IS AT LEAST 80%, A TOTAL SOLAR ENERGY TRANSMITTANCE IS 62% OR LESS, A DOMINANT WAVELENGTH IS FROM 500 TO 540 NM, AND AN INTEGRATED VALUE OBTAINED BY INTEGRATING TRANSMITTANCE OF EVERY 1 NM IN THE WAVELENGTH FROM 1100 TO 2200 NM IS 62000 OR LESS; B) WHEN THE GLASS COMPOSITION IS FORMED TO HAVE A THICKNESS IN THE RANGE OF 3 TO 5 MM, A VISIBLE LIGHT TRANSMITTANCE IS AT LEAST 70%, A TOTAL SOLAR ENERGY TRANSMITTANCE IS 45% OR LESS, A DOMINANT WAVELENGTH IS FROM 495 TO 540 NM, AND AN INTEGRATED VALUE OBTAINED AS ABOVE IS 62000 OR LESS.