	US 12,304,858 B2
	Colored glass articles having improved mechanical durability
Xiaoju Guo, Pittsford, NY (US); Karl William Koch, III, Elmira, NY (US); and Liping Xiong Smith, Painted Post, NY (US)
Assigned to CORNING INCORPORATED, Corning, NY (US)
Filed by CORNING INCORPORATED, Corning, NY (US)
Filed on Jun. 16, 2022, as Appl. No. 17/841,776.
Claims priority of provisional application 63/212,179, filed on Jun. 18, 2021.
Prior Publication US 2022/0402806 A1, Dec. 22, 2022
Int. Cl. C03C 3/093 (2006.01); C03C 4/02 (2006.01); C03C 21/00 (2006.01)

CPC C03C 3/093 (2013.01) [C03C 4/02 (2013.01); C03C 21/00 (2013.01)]

20 Claims

1. A colored glass article comprising:

greater than or equal to 50 mol % and less than or equal to 70 mol % SiO₂;

greater than or equal to 10 mol % and less than or equal to 17.5 mol % Al₂O₃;

greater than or equal to 3 mol % and less than or equal to 10 mol % B₂O₃;

greater than or equal to 8.8 mol % and less than or equal to 14 mol % Li₂O;

greater than or equal to 1.5 mol % and less than or equal to 8 mol % Na₂O;

greater than or equal to 0.001 mol % and less than or equal to 2 mol % Cr₂O₃;

less than or equal to 0.01 mol % TiO₂, wherein:

R₂O+RO−Al₂O₃is greater than or equal to 0.5 mol % and less than or equal to 6 mol %, wherein R₂O is the sum of Li₂O, Na₂O, and K₂O and RO is the sum of MgO, ZnO, and CaO; and

Al₂O₃+MgO+ZnO is greater than or equal to 12 mol % and less than or equal to 22 mol %.