Ultraviolet/infrared absorbent low transmittance glass
First Claim
1. An ultraviolet/infrared absorbent low transmittance glass consisting of a base glass and colorants, said base glass consisting essentially of:
- 65 to 80 wt. % SiO2;
0 to 5 wt. % Al2O3;
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. % Na2O;
0 to 5 wt. % K2O, wherein a total amount of Na2O and K2O is between 10 and 20 wt. %; and
0 to 5 wt. % B2O3, and said colorants consisting essentially of;
more than 0.95 wt. % and less than 1.2 wt. % total iron oxide (T-Fe2O3) expressed as Fe2O3;
0.001-0.030 wt. % CoO; and
0.003-0.2 wt. % NiO.
1 Assignment
0 Petitions
Accused Products
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. % SiO2; 0 to 5 wt. % Al2O3; 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. % Na2O; 0 to 5 wt. % K2O, wherein a total amount of Na2O and K2O is between 10 and 20 wt. %; and 0 to 5 wt. % B2O3, and colorants including: more than 0.95 wt. % and less than 1.2 wt. % total iron oxide (T-Fe2O3) expressed as Fe2O3; 0.001 to 0.0180 wt. % CoO; and 0.003 to 0.2 wt. % NiO.
163 Citations
14 Claims
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1. An ultraviolet/infrared absorbent low transmittance glass consisting of a base glass and colorants, said base glass consisting essentially of:
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65 to 80 wt. % SiO2;
0 to 5 wt. % Al2O3;
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. % Na2O;
0 to 5 wt. % K2O, wherein a total amount of Na2O and K2O is between 10 and 20 wt. %; and
0 to 5 wt. % B2O3, and said colorants consisting essentially of; more than 0.95 wt. % and less than 1.2 wt. % total iron oxide (T-Fe2O3) expressed as Fe2O3;
0.001-0.030 wt. % CoO; and
0.003-0.2 wt. % NiO. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An ultraviolet/infrared absorbent low transmittance glass consisting of a base glass and colorants, said base glass consisting essentially of:
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65 to 80 wt. % SiO2;
0 to 5 wt. % Al2O3;
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. % Na2O;
0 to 5 wt. % K2O, wherein a total amount of Na2O and K2O is between 10 and 20 wt. %; and
0 to 5 wt. % B2O3, and said colorants consisting essentially of; more than 0.95 wt. % and less than 1.2 wt. % total iron oxide (T-Fe2O3) expressed as Fe2O3;
0.001-0.030 wt. % CoO;
0.003-0.2 wt. % NiO;
less than 2 wt. % CeO2; and
less than 2 wt. % TiO2.
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Specification