Patent ID: 7709406
Filing Date: 2010-05-04
Classification: C03B,C03C,Y02P

Abstract:
1. An alkali metal-free glass comprising in mole percent on an oxide basis: wherein: (a) 1.0≦Σ(MgO+CaO+SrO+BaO)/(Al (b) 2.5 MgO+5 CaO+6 SrO+7 BaO≦59; (c) the glass has a coefficient of thermal expansion less than or equal to 36×10 (d) the glass has a density less than or equal to 2.46 g/cc; (e) the glass has a liquidus temperature minus softening point up to 200° C.; and (f) the glass comprises at most 0.05 mole percent of As