US 12,448,322 B2
Glass composition, glass sheet, and vehicle window including glass sheet
Hiromitsu Seto, Hyogo (JP)
Assigned to NIPPON SHEET GLASS COMPANY, LIMITED, Tokyo (JP)
Filed by Nippon Sheet Glass Company, Limited, Tokyo (JP)
Filed on Jul. 1, 2021, as Appl. No. 17/365,661.
Application 17/365,661 is a continuation of application No. 15/531,939, granted, now 11,084,753, previously published as PCT/JP2015/005998, filed on Dec. 2, 2015.
Claims priority of application No. 2014-244546 (JP), filed on Dec. 3, 2014; and application No. 2015-031352 (JP), filed on Feb. 20, 2015.
Prior Publication US 2021/0323858 A1, Oct. 21, 2021
Int. Cl. C03C 3/087 (2006.01); B32B 17/06 (2006.01); B60J 1/00 (2006.01); C03C 3/095 (2006.01); C03C 4/08 (2006.01)
CPC C03C 4/085 (2013.01) [B32B 17/06 (2013.01); B60J 1/00 (2013.01); C03C 3/087 (2013.01); C03C 3/095 (2013.01); B32B 2309/105 (2013.01); B32B 2605/006 (2013.01)] 11 Claims
 
1. An ultraviolet-shielding glass sheet comprising a glass composition based on soda-lime glass,
wherein the glass sheet has a thickness of 1 to 5 mm, and
at the thickness, an ultraviolet transmittance (Tuv 380) as determined according to ISO 9050:1990 is 1.5% or less,
an ultraviolet transmittance (Tuv 400) as determined according to ISO 13837:2008 convention A is 5.0% or less,
a visible transmittance (YA) as measured using CIE standard illuminant A according to JIS R 3106:1998 is 20 to 40%, and a solar transmittance (TG) as measured according to JIS R 3106:1998 is 10 to 45%,
the glass composition consists of, as base composition:
65 to 85 wt % SiO2;
0 to 5 wt % B2O3;
0 to 5 wt % Al2O3;
0 to 20 wt % MgO;
0 to 20 wt % CaO;
10 to 20 wt % Na2O;
0 to 5 wt % K2O; and
0 to 0.5 wt % SO3,
and as coloring components:
1.1 to 1.74 wt % TiO2;
0.2 to 2.0 wt % CeO2;
1.0 wt % or more and less than 2.0 wt % T-Fe2O3, where T-Fe2O3 represents total iron oxide calculated as Fe2O3;
150 to 300 wt. ppm cobalt oxide (CoO) calculated as CoO;
0 to 200 wt. ppm NiO; and
9 to 34 wt. ppm Se,
a FeO ratio is 5 to 30%, the FeO ratio representing a weight ratio of FeO calculated as Fe2O3 to T-Fe2O3,
the total content of TiO2 and CeO2 is 2 wt % or more, and
a NiO/Se ratio is 0 to 15, the NiO/Se ratio representing a content ratio of NiO to Se.