Schott Ag

Julia Weißhuhn

Rüdiger Dietrich

Jochen Alkemper

Oliver Hochrein

Susanne Krüger

Jovana Djordjevic-Reiss

Plate-shaped, chemically prestressed glass articles as well as methods for producing such chemically prestressed glass articles are provided. The glass article has a glass with a composition comprising SiO, AlO, and LiO and a set-drop strength from 50 to 150. The glass has at least one feature selected from: a sodium exchange depth, a storable tensile stress, a network former content of at least 82 wt %, a content of alkali oxides of at most 12 wt %, a content of alkali oxides of at most 10 wt %, and any combinations thereof.

Plate-shaped, chemically prestressed glass articles and methods for producing

Chemically toughened glass is provided that has a depth of compressive stress for potassium of at least 4 &#x3bc;m and at most 8 &#x3bc;m; a compressive stress at a depth of 30 &#x3bc;m due to sodium exchange of at most 200 MPa and a minimum amount of at least 90 MPa where the thickness is 0.5 mm, at least 100 MPa where the thickness is 0.55 mm, at least 110 MPa in where the thickness is 0.6 mm, at least 120 MPa where the thickness is 0.7 mm, and at least 140 MPa where the thickness is 1 mm; a ratio of sodium exchange depth, in &#x3bc;m, to the thickness, in mm, that is greater than 0.130; and a normalized integral of tensile stress that is a storable tensile stress of at least 20.6 MPa and at most 30 MPa.

Glass with preferably increased storable tensile stress, chemically toughened glass article with preferably increased storable tensile stress, method for producing such glass, and use thereof

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Mainz, Germany

Julia Weißhuhn