Easy-to-temper glass composition

Abstract

Abstract PURPOSE:To provide the titled compsn. which is easy to temper and has excellent weatherability, etc., by incorporating SiO2, Al2O3, CaO, MgO, Na2O, K2O, and Fe2O3 at specific weight ratios into the compsn. and incorporating CoO, NiO and Se as trace components therein. CONSTITUTION:The color glass compsn. contg. the oxides of the ratios shown by wt% in the table and >=97% sum of these components, and contg. 70-73% SiO2+Al2O3, 12-15% CaO+MgO, 13.5-17% Na2O+K2O, and further trace components consisting of 0.001-0.004 CaO, 0.0002-0.003 NiO, and 0.0003-0.001% Se is produced. The compsn. is so prepd. that the viscosity temp. to attain 10<9> poise is 650-685 deg.C, the viscosity temp. to attain 10<12> poise 555-585 deg.C and the temp. difference therebetween 96-103 deg.C to obtain the objective easy-to- temper glass compsn. This glass is adequately used as window glass of automobiles, etc.

Inventors

• 👤 Shinichi Araya
• 👤 眞一 荒谷
• 👤 Hiroshi Machishita
• 👤 町下　汎史
• 👤 Yasushi Taguchi
• 👤 泰史 田口

Bibliographic Details