Patent ID: 11964909
Assignee: SCHOTT AG
Field: Materials, metallurgy (Chemistry)
Classification: CPC C | IPC C

Claim 17:
18. The sealing glass of claim 1, comprising in % by weight on an oxide basis:
SiO2 from 50 to 72,
Al2O3 from 0 to 2,
B2O3 from 2 to 20,
Li2O from greater than 0 to 5,
K2O from 10 to 35,
CaO from 0 to 7,
BaO from 0 to 16,
ZnO from 0 to 5,
F from 0 to 8,
a sum of alkali metal oxides in a range from at least 15% by weight to not more than 35% by weight, and
not more than 500 ppm by weight of Na2O and PbO.