Patent ID: 6017838
Filing Date: 2000-01-25
Classification: C03C,Y10S

Abstract:
A universal lead free glass having a composition, in weight percent, of: SiO.sub.2 58 to 69 Na.sub.2 O 3.2 to 5.5 K.sub.2 O 8.5 to 12 Li.sub.2 O 0.5 to 2.5 BaO 6 to 12 SrO 0 to 4 CaO 1 to 6 MgO 0 to 3 Al.sub.2 O.sub.3 2.1 to 7.0 B.sub.2 O.sub.3 0 to 3  and wherein the mole ratio of K.sub.2 O to Na.sub.2 O is at least 1.1.