Patent ID: 6753280
Filing Date: 2004-06-22
Classification: C03C

Abstract:
Ultraviolet/infrared absorbent green glass consisting essentially of base glass composition and colorant, said base glass composition consisting essentially of:65 to 80 wt. % SiO2; 0.001 to 2 wt. % of Li2O; 0 to 5 wt. % Al2O3; 0 to 10 wt. % MgO; 5 to 15 wt. % CaO wherein a total amount of MgO and CaO is 5 to 15 wt. %; 10 to 20 wt. % Na2O; 0 to 5 wt. % K2O wherein a total amount of Na2O and K2O is 10 to 20 wt. %; and 0 to 5 wt. % B2O3, and said colorant including: 0.4 to 1 wt. % total iron oxide expressed as Fe2O3 (T-Fe2O3), wherein FeO expressed as Fe2O3 is 15 to 60% of T-Fe2O3; 0 to 1 wt. % Ti2O; and 0 to 2 wt. % CeO2, wherein said glass has visible light transmittance (YA) of not less than 70%, measured by using CIE illuminant A, and total solar radiation transmittance (TG) of not greater than 60%, when said glass has a thickness between 2.1 mm and 6 mm.