Chemically temperable glass sheet
AssigneeAgc Glass Europe
InventorThomas LAMBRICHT
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Abstract
The invention relates to a glass sheet having a boron-, strontium- and lithium-free glass composition comprising the following in weight percentage, expressed with respect to the total weight of glass: 65≦SiO2≦78%; 8≦Na2O≦15%; 1≦K2O<6%; 1≦Al2O3<6%; 2≦CaO<10%; 0≦MgO≦6%; as well as a K2O/(K2O+Na2O) ratio which is ranging from 0.1 and 0.7. The invention corresponds to an easy chemically-temperable soda-lime-silica type glass composition, which is more suited for use in electronic devices applications.
Claims15
A glass sheet having a boron-, strontium- and lithium-free glass composition, comprising the following in weight percentage, expressed with respect to the total weight of glass:
- 65≦SiO2≦78%;
- 5≦Na2O≦20%;
- 1≦K2O<8%;
- 1≦Al2O3<6%;
- 2≦CaO<10%;
- 0≦MgO≦8%;
- and
- K2O/(K2O+Na2O) ratio which is from 0.1 to 0.7.
Dependencies are inferred from the claim text.