Kcc Corporation

Jin Hyuk Lee

Si Moo Lee

Jae Wook Lee

Yong Yi Kim

Won Sik Jung

Seon Jin Kim

Jeung Je Lee

In Sig Seog

The present invention relates to a dark neutral green gray soda-lime glass composition comprising, as a colorant ingredient per 100 weight parts of a base glass composition, 1.4 to 2.5 weight parts of total FeO, 0.02 to 0.04 weight parts of CoO, 0.0001 to 0.004 weight parts of Se, 0.005 to 0.5 weight parts of MnO, and 0.05 to 1 weight parts of CeO. The glass composition of the present invention has a visible light transmittance (LT) of 15% or less, an ultraviolet ray transmittance (T) of 0 to 1%, and a solar transmittance (T) of 15% or less, measured for a reference thickness of 4 mm. As described above, the glass composition of the present invention is excellent in absorbing ultraviolet rays and solar heat, and therefore can be valuably used in privacy glass or a sunroof of a motor vehicle, or in glass used for construction.

Dark neutral green gray soda-lime glass composition

The present invention relates to a glass substrate composition comprising SiO55&#x2dc;70 wt %, AlO0&#x2dc;1 wt %, ZrO0.1&#x2dc;5 wt %, NaO 0.1&#x2dc;5 wt %, KO 7&#x2dc;13 wt %, MgO 7&#x2dc;14 wt %, CaO 0&#x2dc;4 wt %, SrO 7&#x2dc;12 wt % and SO0.01&#x2dc;0.5 wt %. The glass substrate prepared by using the above composition shows less thermal deformation at a baking process under a high temperature since the strain point of the glass is at least 570&#xb0; C., does not have such disadvantages as increase of fuel cost and short life cycle of refractories resulted from less than 1460&#xb0; C. of melting point, and has 80&#x2dc;95&#xd7;10/&#xb0; C. of thermal expansion coefficient in the temperature range of 50&#x2dc;350&#xb0; C. Therefore, the glass according to the present invention is suitable as a substrate.

High strain-point glass composition for substrate

Growing community of inventors

Yeoju-gun, South Korea

Jin Hyuk Lee