Colorless glass composition
AssigneeVidrio Plano de Mexico, S.A. de C.V.
InventorsJosé Guadalupe Cid-Aguilar, Rafael Enrique Pinto-Negroe, Herbert Scheffler-Hudlet
Life of this patent
Estimating the term…
Abstract
The invention is a colorless glass composition having a base glass composition, comprising, in weight percentage, from about 0.01 to 0.03 wt % of Fe2O3; about 20-30% reduction (% Fe+2) and about 0.05 to 1 wt % of TiO2, the glass having a visible light transmission of at least 89%, a ultraviolet radiation transmittance of no more than 81%; a solar direct transmission of no more than 90%; a dominant wavelength from 600 nm to 490 nm; and a purity of less than 2%.
Claims4
A colorless glass composition having a base glass composition, comprising, in weight percentage:
- from 70 to 75% of SiO2, from 10 to 15% of Na2O, from 5 to 10% of CaO, from 0 to 5% of MgO, from 0.0 to 3% K2O, from 0.1 to 1.0% Al2O3% and compounds consisting of from about 0.01 to 0.03% of Fe2O3 from about 20 to 30% reduction (Fe2+) and from about 0.2 to 1% of TiO2 (Ti4+), the glass having a visible light transmission of at least 89%, an ultraviolet radiation transmittance of no more than 81%, solar direct transmittance of no more than 90%, a dominant wavelength from 600 nm to 490 nm, and a purity of less than 2%.
Dependencies are inferred from the claim text.