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US 8,431,502 B2Granted
Silicate glasses having low seed concentration
AssigneeCorning Incorporated
InventorsMatthew John Dejneka, Sinue Gomez
Life of this patent
Estimating the term…
Abstract
A fusion formable and ion exchangeable silicate glass having a seed concentration of less than about 1 seed/cm3.
Claims30
A silicate glass, the silicate glass having a seed concentration of less than about 1 seed/cm3, wherein the silicate glass comprises:
- 60-72 mol % SiO2;
- 6-14 mol % Al2O3;
- 0-3 mol % B2O3;
- 0-1 mol % Li2O;
- 0-20 mol % Na2O;
- 0-10 mol % K2O;
- 0-2.5 mol % CaO;
- 0-5 mol % ZrO2;
- 0-1 mol % SnO2;
- and 0-1 mol % CeO2, wherein 12 mol %≦Li2O+Na2O+K2O≦20 mol %, and wherein the silicate glass comprises less than 50 ppm As2O3 and less than 50 ppm Sb2O3.
7 more elements
A silicate glass, the silicate glass having a seed concentration of less than about 1 seed/cm3, wherein the silicate glass comprises:
- 60-72 mol % SiO2;
- 6-14 mol % Al2O3;
- 0.63-3 mol % B2O3;
- 0-1 mol % Li2O;
- 0-20 mol % Na2O;
- 0-10 mol % K2O;
- 0.57-10 mol % CaO;
- 0-5 mol % ZrO2;
- 0-1 mol % SnO2;
- and 0-1 mol % CeO2, wherein 12 mol %≦Li2O+Na2O+K2O≦20 mol %, wherein the silicate glass comprises less than 50 ppm As2O3.
7 more elements
A silicate glass, the silicate glass having a seed concentration of less than about 1 seed/cm3, wherein the silicate glass comprises:
- 60-72 mol % SiO2;
- 6-14 mol % Al2O3;
- 0-15 mol % B2O3;
- 0-1 mol % Li2O;
- 0-20 mol % Na2O;
- 0-10 mol % K2O;
- 0-10 mol % CaO;
- 0-5 mol % ZrO2;
- 0-1 mol % SnO2;
- and 0-1 mol % CeO2, wherein 12 mol %≦Li2O+Na2O+K2O≦20 mol %, wherein 0.1 mol % SnO2+CeO2≦2 mol %, and wherein the silicate glass is formed from batch or raw materials that include at least one oxidizer fining agent.
7 more elements
Dependencies are inferred from the claim text.