US 12,291,484 B2
Ion-exchangeable mixed alkali aluminosilicate glasses
Timothy Michael Gross, Painted Post, NY (US); Xiaoju Guo, Pittsford, NY (US); Peter Joseph Lezzi, Corning, NY (US); Alexandra Lai Ching Kao Andrews Mitchell, Ithaca, NY (US); and Rostislav Vatchev Roussev, Painted Post, NY (US)
Assigned to CORNING INCORPORATED, Corning, NY (US)
Filed by CORNING INCORPORATED, Corning, NY (US)
Filed on Jan. 5, 2023, as Appl. No. 18/093,416.
Application 18/093,416 is a continuation of application No. 17/164,060, filed on Feb. 1, 2021, granted, now 11,577,987.
Application 17/164,060 is a continuation of application No. 16/202,767, filed on Nov. 28, 2018, granted, now 10,906,834, issued on Feb. 2, 2021.
Claims priority of provisional application 62/591,958, filed on Nov. 29, 2017.
Prior Publication US 2023/0150863 A1, May 18, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C03C 3/097 (2006.01); C03C 3/083 (2006.01); C03C 3/085 (2006.01); C03C 3/091 (2006.01); C03C 21/00 (2006.01); G06F 3/041 (2006.01)
CPC C03C 3/097 (2013.01) [C03C 3/083 (2013.01); C03C 3/085 (2013.01); C03C 3/091 (2013.01); C03C 21/002 (2013.01); G06F 3/041 (2013.01)] 19 Claims
 
1. A glass composition comprising:
from 55.0 mol % to 73.5 mol % SiO2;
from 8.0 mol % to 20.0 mol % Al2O3;
from 0.5 mol % to 8.0 mol % P2O5;
from 6.0 mol % to 10.0 mol % Li2O;
from 5.0 mol % to 15.0 mol % Na2O; and
less than or equal to 1.5 mol % K2O,
wherein:
Al2O3+Li2O+Na2O is greater than or equal to 27.5 mol %,
R2O+RO is from greater than or equal to 18.0 mol % to less than or equal to 22.0 mol %, where R2O is alkali oxides present in the glass composition and RO is divalent cation oxides present in the glass composition,
R2O/Al2O3 is greater than or equal to 1.06,
SiO2+Al2O3+B2O3+P2O5 is from greater than or equal to 78.0 mol % to less than or equal to 82.0 mol %, and
(SiO2+Al2O3+B2O3+P2O5)/Li2O is from greater than or equal to 8.0 to less than or equal to 13.0.