Patent · US Active

Ion exchangeable alkali aluminosilicate glass compositions having improved mechanical durability

US11584681B2 · kind B2 · utility

1Cited by

18References

20Claims

0Family size

Assignee

CORNING INCORPORATED · US

Inventors

Shuo Cui · Burlington, US
Xiaoju Guo · Corning, US
Peter Joseph Lezzi · Corning, US
Jian Luo · Cupertino, US

Key dates

Filing date	Nov 20, 2020
Grant date	Feb 21, 2023
Priority date	—
Expiry date	Nov 29, 2040

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03C2204/00
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A glass composition comprises: 50.0 mol % to 70.0 mol % SiO2; 10.0 mol % to 25.0 mol % Al2O3; 0.0 mol % to 5.0 mol % P2O5; 0.0 mol % to 10.0 mol % B2O3; 5.0 mol % to 15.0 mol % Li2O; 1.0 mol % to 15.0 mol % Na2O; and 0.0 mol % to 1.0 mol % K2O. The sum of all alkali oxides, R2O, present in the glass composition may be in the range from greater than or equal to 11.0 mol % to less than or equal to 23.0 mol %. The sum of Al2O3 and R2O present in the glass composition may be in the range from greater than or equal to 26.0 mol % to less than or equal to 40.0 mol %. The glass composition may satisfy the relationship −0.1≤(Al2O3—(R2O+RO))/Li2O≤0.3.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.