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

Claim 16:
17. The sealing glass of claim 1, comprising, in % by weight on an oxide basis:
SiO2 from 50 to 63,
B2O3 from 5 to 18,
Li2O from 1 to 10,
K2O from 12 to 20,
CaO from 1 to 15,
BaO from 0 to 5,
ZnO from 0 to 5,
F from 0 to 5,
a sum of alkali metal oxides in a range from at least 13% by weight to not more than 30% by weight, and
not more than 500 ppm by weight of Na2O and PbO.