ALUMINIUM-FREE BOROSILICATE GLASS

An aluminum-free borosilicate glass includes the following glass composition (in weight-% on oxide basis): 70-80 SiO2; 8-14 B2O3; 0 Al2O3; 0-4 Na2O; 3-10 K2O; 0 Li2O; 3-14 sum Na2O+K2O; 0-1 CaO; 0-1 MgO; 0-1 BaO; 0-1 SrO; 0-2 sum CaO+MgO+BaO+SrO; 0-1 ZnO; 3.6-14 ZrO2; 0-10 TiO2; and 0.01-2.0 one or...

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Bibliographische Detailangaben
1. Verfasser:	Kass, Christof
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS METALLURGY MINERAL OR SLAG WOOL SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS
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Beschreibung
Zusammenfassung:	An aluminum-free borosilicate glass includes the following glass composition (in weight-% on oxide basis): 70-80 SiO2; 8-14 B2O3; 0 Al2O3; 0-4 Na2O; 3-10 K2O; 0 Li2O; 3-14 sum Na2O+K2O; 0-1 CaO; 0-1 MgO; 0-1 BaO; 0-1 SrO; 0-2 sum CaO+MgO+BaO+SrO; 0-1 ZnO; 3.6-14 ZrO2; 0-10 TiO2; and 0.01-2.0 one or more refining agents, the weight ratio of ZrO2:K2O being in a range of 1.2:1 to 1.4:1.