Back to results
US 2025/0083992 A1Published application
Glass, especially as a cover
AssigneesSchott AG, SCHOTT Technical Glass Solutions GmbH
InventorsSebastian Leukel, Patrick Wilde, Eric Oberländer
Life of this patent
Estimating the term…
Abstract
A chemically temperable or chemically tempered glass includes SiO2, Al2O3, Li2O and B2O3 as constituents. The following applies for the constituents (in mol % based on oxide): 0.8<Li2O/(Li2O+K2O+Na2O)≤1 and 0.1<B2O3≤8.5.
Claims20
A chemically temperable or chemically tempered glass, comprising:
- SiO2, Al2O3, Li2O and B2O3 as constituents, characterized in that the following applies for the constituents (in mol % based on oxide):
- 0.8<Li2O/(Li2O+K2O+Na2O)≤1 and 0.1<B2O3≤8.5.
A process for producing a tempered glass, the glass comprising SiO2, Al2O3, Li2O and B2O3 as constituents, wherein the following applies for the constituents (in mol % based on oxide):
- 0.8<Li2O/(Li2O+K2O+Na2O)≤1 and 0.1<B2O3≤8.5, the method comprising:
- producing the glass by a melting process, a refining of a glass melt produced during the melting process, and a subsequent hot forming;
- and
- performing at least one ion exchange in an exchange bath having a composition of 100% by weight to 0% by weight of KNO3 and 0% by weight to 100% by weight of NaNO3 and 0% by weight to 5% by weight of LiNO3 at a temperature of the exchange bath between 370° C. and 500° C. and a duration between 1 hour and 50 hours.
1 more element
A cover, comprising:
- a tempered glass having a thickness of 0.3 mm to 1 mm, the glass comprising SiO2, Al2O3, Li2O and B2O3 as constituents, characterized in that the following applies for the constituents (in mol % based on oxide):
- 0.8<Li2O/(Li2O+K2O+Na2O)≤1 and 0.1<B2O3≤8.5.
Dependencies are inferred from the claim text.