Importance

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Abstract

The ultraviolet/infrared absorbent low transmittance glass has a grayish green color shade, low visible light transmittance, low total solar energy transmittance, and low ultraviolet transmittance, and is suitable for a rear window of a vehicle and capable of protecting privacy. The glass is formed of a base glass including: 65 to 80 wt. % SiO.sub.2 ; 0 to 5 wt. % Al.sub.2 O.sub.3 ; 0 to 10 wt. % MgO; 5 to 15 wt. % CaO, wherein a total amount of MgO and CaO is between 5 and 15 wt. %; 10 to 18 wt. % Na.sub.2 O; 0 to 5 wt. % K.sub.2 O, wherein a total amount of Na.sub.2 O and K.sub.2 O is between 10 and 20 wt. %; and 0 to 5 wt. % B.sub.2 O.sub.3, and colorants including: more than 0.95 wt. % and less than 1.2 wt. % total iron oxide (T-Fe.sub.2 O.sub.3) expressed as Fe.sub.2 O.sub.3 ; 0.001 to 0.0180 wt. % CoO; and 0.003 to 0.2 wt. % NiO.

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First Claim