Glass compositions include phosphorus oxide (P.sub.2O.sub.5), niobia (Nb.sub.2O.sub.5), titania (TiO.sub.2), potassium oxide (K.sub.2O) and calcium oxide (CaO) as essential components and may optionally include barium oxide (BaO), sodium oxide (Na.sub.2O), lithium oxide (Li.sub.2O), tungsten oxide (WO.sub.3), bismuth oxide (Bi.sub.2O.sub.3), tantalum oxide (Ta.sub.2O.sub.5), silica (SiO.sub.2) and other components. The glasses may be characterized by high refractive index at 587.56 nm at comparably low density at room temperature.

Glass compositions include phosphorus oxide (P.sub.2O.sub.5), niobia (Nb.sub.2O.sub.5), titania (TiO.sub.2), potassium oxide (K.sub.2O) and calcium oxide (CaO) as essential components and may optionally include barium oxide (BaO), sodium oxide (Na.sub.2O), lithium oxide (Li.sub.2O), tungsten oxide (WO.sub.3), bismuth oxide (Bi.sub.2O.sub.3), tantalum oxide (Ta.sub.2O.sub.5), silica (SiO.sub.2) and other components. The glasses may be characterized by high refractive index at 587.56 nm at comparably low density at room temperature.

Glass compositions include niobia (Nb.sub.2O.sub.5), phosphorus oxide (P.sub.2O.sub.5) and titania (TiO.sub.2) as essential components and may optionally include calcium oxide (CaO), potassium oxide (K.sub.2O), barium oxide (BaO), sodium oxide (Na.sub.2O), lithium oxide (Li.sub.2O), magnesia (MgO), zinc oxide (ZnO) and other components. The glasses may be characterized by high refractive index at 587.56 nm at comparably low density at room temperature.

Glass compositions include niobia (Nb.sub.2O.sub.5), phosphorus oxide (P.sub.2O.sub.5) and titania (TiO.sub.2) as essential components and may optionally include calcium oxide (CaO), potassium oxide (K.sub.2O), barium oxide (BaO), sodium oxide (Na.sub.2O), lithium oxide (Li.sub.2O), magnesia (MgO), zinc oxide (ZnO) and other components. The glasses may be characterized by high refractive index at 587.56 nm at comparably low density at room temperature.

The present disclosure relates to a lithium ion-conducting glass ceramic which comprises a residual glass phase that is also ion-conducting, a process for the production thereof as well as its use in a battery. The glass ceramic according to the present disclosure comprises a main crystal phase which is isostructural to the NaSICon crystal phase, wherein the composition can be described with the following formula: Li.sub.1+x−yM.sub.y.sup.5+M.sub.x.sup.3+M.sub.2−x−y.sup.4+(PO.sub.4).sub.3, wherein x is greater than 0 and at most 1, as well as greater than y. Y may take values of between 0 and 1. Here, the following boundary condition has to be fulfilled: (1+x−y)>1. Here, M represents a cation with the valence of +3, +4 or +5. M.sup.3+ is selected from Al, Y, Sc or B, wherein at least Al as trivalent cation is present. Independently thereof, M.sup.4+ is selected from Ti, Si or Zr, wherein at least Ti as tetravalent cation is present. Independently thereof, M.sup.5+ is selected from Nb, Ta or La.

The present disclosure relates to a lithium ion-conducting glass ceramic which comprises a residual glass phase that is also ion-conducting, a process for the production thereof as well as its use in a battery. The glass ceramic according to the present disclosure comprises a main crystal phase which is isostructural to the NaSICon crystal phase, wherein the composition can be described with the following formula: Li.sub.1+x−yM.sub.y.sup.5+M.sub.x.sup.3+M.sub.2−x−y.sup.4+(PO.sub.4).sub.3, wherein x is greater than 0 and at most 1, as well as greater than y. Y may take values of between 0 and 1. Here, the following boundary condition has to be fulfilled: (1+x−y)>1. Here, M represents a cation with the valence of +3, +4 or +5. M.sup.3+ is selected from Al, Y, Sc or B, wherein at least Al as trivalent cation is present. Independently thereof, M.sup.4+ is selected from Ti, Si or Zr, wherein at least Ti as tetravalent cation is present. Independently thereof, M.sup.5+ is selected from Nb, Ta or La.

The present disclosure provides an optical glass including, by mass %, 27 to 41% of a P.sub.2O.sub.5 component, 7 to 17% of a Na.sub.2O component, 5 to 10% of a K.sub.2O component, 8 to 26% of a TiO.sub.2 component, and 5 to 39% of a Nb.sub.2O.sub.5 component, wherein a partial dispersion ratio (P.sub.g,F) is equal to or less than 0.635.

The present disclosure provides an optical glass including, by mass %, 27 to 41% of a P.sub.2O.sub.5 component, 7 to 17% of a Na.sub.2O component, 5 to 10% of a K.sub.2O component, 8 to 26% of a TiO.sub.2 component, and 5 to 39% of a Nb.sub.2O.sub.5 component, wherein a partial dispersion ratio (P.sub.g,F) is equal to or less than 0.635.

A bioactive borate glass composition including, for example: 30 to 60% B.sub.2O.sub.3; 0.5 to 20% ZrO.sub.2; 3 to 30% Na.sub.2O; 0.1 to 15% K.sub.2O; 0.1 to 15% MgO; 5 to 30% CaO; and 1 to 5% P.sub.2O.sub.5 in mole percents based on 100 mol % of the total composition. Also disclosed is a method of making and method of using the compositions and the bioactive borate glass dentin treatment formulations.

A bioactive borate glass composition including, for example: 30 to 60% B.sub.2O.sub.3; 0.5 to 20% ZrO.sub.2; 3 to 30% Na.sub.2O; 0.1 to 15% K.sub.2O; 0.1 to 15% MgO; 5 to 30% CaO; and 1 to 5% P.sub.2O.sub.5 in mole percents based on 100 mol % of the total composition. Also disclosed is a method of making and method of using the compositions and the bioactive borate glass dentin treatment formulations.