Nippon Electric Glass Co., Ltd.

Kosuke Kawamoto

Shingo Nakane

Takashi Murata

Takako Tojyo

Masahiro Hayashi

Ken Choju

Yuusuke Tomita

A laminate according to an embodiment of the present invention includes at least one glass sheet and at least one resin layer, a relative dielectric constant of the glass sheet at 25° C. and a frequency of 2.45 GHz being 5 or less, and a dielectric loss tangent of the glass sheet at 25° C. and a frequency of 2.45 GHz being 0.003 or less.

Laminate

A tempered glass has a compressive stress layer in a surface thereof, includes as a glass composition, in terms of mass %, 50 to 80% of SiO, 10 to 30% of AlO, 0 to 6% of BO, 0 to 2% of LiO, and 5 to 25% of NaO, and is substantially free of AsO, SbO, PbO, and F.

Tempered glass, tempered glass plate, and glass for tempering

To devise a tempered glass and a glass to be tempered each of which is lowered in density and viscosity at high temperature, hardly deteriorates a KNOmolten salt, and is excellent in thermal shock resistance. The tempered glass having a compression stress layer in a surface thereof, including as a glass composition, in terms of mol %, 50 to 80% of SiO, 5 to 30% of AlO, 0 to 2% of LiO, 5 to 25% of NaO, and 0 to 5% of KO, and being substantially free of AsO, SbO, PbO, and F.

Strengthened glass, strengthened glass plate, strengthened glass container, and glass for strengthening

An object of the present invention is to provide a LiO&#x2014;AlO&#x2014;SiObased crystallized glass with excellent bubble quality even without using AsOor SbOas a fining agent and a method for producing the same. The LiO&#x2014;AlO&#x2014;SiObased crystallized glass of the present invention is a LiO&#x2014;AlO&#x2014;SiObased crystallized glass which does not substantially comprise AsOand SbOand comprises at least one of Cl, CeOand SnO, and has a S content of not more than 10 ppm in terms of SO.

[object Object]

Provided is a LiO&#x2014;AlO&#x2014;SiO-based crystallized glass, comprising, as a composition in terms of mass %, 55 to 75% of SiO, 20.5 to 27% of AlO, 2% or more of LiO, 1.5 to 3% of TiO, 3.8 to 5% of TiO+ZrO, and 0.1 to 0.5% of SnO, and satisfying the relationships of 3.7&#x2266;LiO+0.741MgO+0.367ZnO&#x2266;4.5 and SrO+1.847CaO&#x2266;0.5.

A tempered glass has a compression stress layer in a surface thereof, and includes as a glass composition in terms of mol %, 50 to 75% of SiO, 3 to 13% of AlO, 0 to 1.5% of BO, 0 to 4% of LiO, 7 to 20 % of NaO, 0 to 10 % of KO, 0.5 to 13% of MgO, 0 to 6% of CaO, and 0 to 4.5% of SrO. The tempered glass is substantially free of AsO, SbO, PbO, and F. The tempered glass has a molar ratio MgO/(MgO+AlO) of 0.05 to 0.30.

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Shiga, Japan

Kosuke Kawamoto