Patent ID: 6048811
Filing Date: 2000-04-11
Classification: C03C

Abstract:
A fusion sealing material consisting essentially of at least 65 weight % of a SnO--ZnO--P.sub.2 O.sub.5 glass frit and a mill addition consisting essentially of an amount up to 10 weight % of a finely divided, crystallization catalyst and 0-25 weight % of an additive that decreases the effective CTE of a seal prepared with the material, the crystallization catalyst being selected from a group consisting of alumina having an average particle size less than 3.0 microns, BaTiO.sub.3 and ZnO, and the glass frit consisting essentially, in mole percent on an oxide basis, of 26-33% P.sub.2 O.sub.5, 0-2% B.sub.2 O.sub.3, 0-1% Al.sub.2 O.sub.3, 0-1% WO.sub.3 and SnO and ZnO in a mole ratio greater than about 3.0:1.