Patent ID: 6395660
Filing Date: 2002-05-28
Classification: C03C,Y10S

Abstract:
An ultraviolet/infrared absorbent low transmittance glass consisting of base glass comprising:65 to 80 wt. % SiO2; 0 to 5 wt. % Al2O3; greater than 2 to less than or equal to 10 wt.% MgO; 5 to 15 wt. % CaO wherein a total amount of MgO and CaO is 7 to 15 wt. %; 10 to 18 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 colorants without Se comprising: 1.25 to 2.2 wt. % total iron oxide (Tâ€”Fe2O3) expressed as Fe2O3; 0.001 to 0.03 wt. % CoO; and 0.003 to 0.2 wt. % NiO, wherein said NiO is included in the glass such that the glass has a turquoise blue or deep green color by reinforcement of air blast cooling, and said glass with a thickness between 3.1 mm and 5 mm has a visible light transmittance YA between 10% and 25% and a total solar energy transmittance TG between 10% and 35%.