GLASS COMPOSITION HAVING HIGH THERMAL AND CHEMICAL STABILITY AND METHOD FOR PRODUCING THE SAME

• Main Authors: DANIELSON PAUL P, ELLISON ADAM J, VENKATARAMAN NATESAN
• Format: Patent
• Language: English
• Published: 09.05.2013
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; METALLURGY; MINERAL OR SLAG WOOL; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS

PROBLEM TO BE SOLVED: To provide alkali-free glass exhibiting desirable physical and chemical properties for use as substrates in liquid crystal displays.SOLUTION: The alkali-free glass comprises, in mole percent on an oxide basis, 64.0-72.0% SiO, 9.0-16.0% AlO, 1.0-5.0% BO, 1.0-7.5% MgO+LaO, 2.0-7.5% CaO, 0.0-4.5% SrO and 1.0-7.0% BaO, wherein a BaO/SrO ratio in mole percent is ≥2.0, and the glass has a strain point of ≥700°C.