The disclosure relates to bioactive glasses for use in biomedical applications. In particular, the glasses described herein are phosphate glasses that show fast filling rates of dentin tubules and have advantageous release rates of metal ions, which provide advantages in antibacterial applications and wound healing.

The disclosure relates to bioactive glasses for use in biomedical applications. In particular, the glasses described herein are phosphate glasses that show fast filling rates of dentin tubules and have advantageous release rates of metal ions, which provide advantages in antibacterial applications and wound healing.

An optical glass comprising: by mass%, 20% or more and 55% or less of a content rate of P.sub.2O.sub.5; 10% or more and 40% or less of a content rate of TiO.sub.2; 0% or more and 30% or less of a content rate of Nb.sub.2O.sub.5; 0% or more and 2% or less of a content rate of Al.sub.2O.sub.3; 0% or more and 10% or less of a content rate of B.sub.2O.sub.3; 3% or more and 30% or less of a content rate of BaO; 0% or more and 30% or less of a content rate of Bi.sub.2O.sub.3; 0% or more and 20% or less of a content rate of Ta.sub.2O.sub.5; and 0% or more and 25% or less of a content rate of WO.sub.3, wherein a ratio of a total content rate of Li.sub.2O, Na.sub.2O and K.sub.2O (ΣA.sub.2O; where, A = Li, Na and K) to a content rate of TiO.sub.2 (ΣA.sub.2O/TiO.sub.2) is 0.10 or more and 0.65 or less, and a ratio of a content rate of TiO.sub.2 to a total content rate of P.sub.2O.sub.5, B.sub.2O.sub.3, and Al.sub.2O.sub.3 (TiO.sub.2/(P.sub.2O.sub.5 + B.sub.2O.sub.3 + Al.sub.2O.sub.3) ) is 0.25 or more and 0.85 or less.

An optical glass comprising: by mass%, 20% or more and 55% or less of a content rate of P.sub.2O.sub.5; 10% or more and 40% or less of a content rate of TiO.sub.2; 0% or more and 30% or less of a content rate of Nb.sub.2O.sub.5; 0% or more and 2% or less of a content rate of Al.sub.2O.sub.3; 0% or more and 10% or less of a content rate of B.sub.2O.sub.3; 3% or more and 30% or less of a content rate of BaO; 0% or more and 30% or less of a content rate of Bi.sub.2O.sub.3; 0% or more and 20% or less of a content rate of Ta.sub.2O.sub.5; and 0% or more and 25% or less of a content rate of WO.sub.3, wherein a ratio of a total content rate of Li.sub.2O, Na.sub.2O and K.sub.2O (ΣA.sub.2O; where, A = Li, Na and K) to a content rate of TiO.sub.2 (ΣA.sub.2O/TiO.sub.2) is 0.10 or more and 0.65 or less, and a ratio of a content rate of TiO.sub.2 to a total content rate of P.sub.2O.sub.5, B.sub.2O.sub.3, and Al.sub.2O.sub.3 (TiO.sub.2/(P.sub.2O.sub.5 + B.sub.2O.sub.3 + Al.sub.2O.sub.3) ) is 0.25 or more and 0.85 or less.

A sulfide glass solid electrolyte sheet can be protected from reaction with moisture by a thin metal layer coating converted to a thin electrochemically functional and protective compound layer. The converted protective compound layer is electrochemically functional in that it allows for through transport of lithium ions.

An optical glass comprising: by mass %, 20% or more and 50% or less of a content rate of P.sub.2O.sub.5; 12.66% or more and 35% or less of a content rate of TiO.sub.2; 0% or more and 20% or less of a content rate of Nb.sub.2O.sub.5; and 5% or more and 30% or less of a content rate of Bi.sub.2O.sub.3, wherein a ratio of a content rate of TiO.sub.2 to a content rate of P.sub.2O.sub.5 (TiO.sub.2/P.sub.2O.sub.5) is 0.30 or more and 0.75 or less.

Provided is optical glass in which a refractive index nd is 1.900 or more, an Abbe number vd is 25.0 or less, an amount of P.sub.2O.sub.5 is 5.0 mass % or more, an amount of Bi.sub.2O.sub.3 is 20.0 mass % or less, an amount of TiO.sub.2 is 0.1 mass % or more, a mass ratio [TiO.sub.2/(Li.sub.2O+Na.sub.2O+K.sub.2O)] between the amount of TiO.sub.2, and a total amount of Li.sub.2O, Na.sub.2O, and K.sub.2O [Li.sub.2O+Na.sub.2O+K.sub.2O] is 2.5 to 10.0, a mass ratio [TiO.sub.2/(MgO+CaO+ZnO+SrO+BaO)] between the amount of TiO.sub.2 and a total amount of MgO, CaO, ZnO, SrO, and BaO [MgO+CaO+ZnO+SrO+BaO] is 1.25 to 10.0, and a mass ratio [(Li.sub.2O+Na.sub.2O+MgO+CaO+ZnO+SrO)/(K.sub.2O+BaO)] between a total amount of Li.sub.2O, Na.sub.2O, MgO, CaO, ZnO, and SrO [Li.sub.2O+Na.sub.2O+MgO+CaO+ZnO+SrO] and a total amount of K.sub.2O and BaO [K.sub.2O+BaO] is 0.8 or less.

Provided is optical glass in which an amount of P.sub.2O.sub.5 is 10.0 to 40.0 mass %, an amount of TiO.sub.2 is 5.0 to 40.0 mass %, an amount of Nb.sub.2O.sub.5 is 20.0 to 60.0 mass %, an amount of K.sub.2O is 0.01 mass % or more, a total amount of Li.sub.2O, Na.sub.2O, K.sub.2O, MgO, CaO, ZnO, SrO, and BaO [Li.sub.2O+Na.sub.2O+K.sub.2O+MgO+CaO+ZnO+SrO+BaO] is 20.0 mass % or less, a total amount of TiO.sub.2 and Nb.sub.2O.sub.5[TiO.sub.2+Nb.sub.2O.sub.5] is 55.0 mass % or more, a mass ratio [K.sub.2O/(Li.sub.2O+Na.sub.2O+K.sub.2O)] between the amount of K.sub.2O, and a total amount of Li.sub.2O, Na.sub.2O, and K.sub.2O [Li.sub.2O+Na.sub.2O+K.sub.2O] is 0.5 or more, a mass ratio [(MgO+CaO+ZnO+SrO+BaO)/(Li.sub.2O+Na.sub.2O+K.sub.2O)] between a total amount of MgO, CaO, ZnO, SrO, and BaO [MgO+CaO+ZnO+SrO+BaO], and the total amount of Li.sub.2O, Na.sub.2O, and K.sub.2O [Li.sub.2O+Na.sub.2O+K.sub.2O] is 0.30 to 10.0, a mass ratio [TiO.sub.2/K.sub.2O] between the amount of TiO.sub.2 and the amount of K.sub.2O is 3.0 or more, and a mass ratio [(Li.sub.2O+Na.sub.2O+MgO+CaO+ZnO+SrO)/(K.sub.2O+BaO)] between a total amount of Li.sub.2O, Na.sub.2O, MgO, CaO, ZnO, and SrO [Li.sub.2O+Na.sub.2O+MgO+CaO+ZnO+SrO], and a total amount of K.sub.2O and BaO [K.sub.2O+BaO] is 0.8 or less.

Provided is optical glass in which a refractive index nd is 1.950 or more, an amount of P.sub.2O.sub.5 is 10.0 to 40.0 mass %, an amount of TiO.sub.2 is 5.0 to 40.0 mass %, an amount of Nb.sub.2O.sub.5 is 20.0 to 60.0 mass %, an amount of Bi.sub.2O.sub.3 is 20.0 mass % or less, a total amount of Al.sub.2O.sub.3 and SiO.sub.2 [Al.sub.2O.sub.3+SiO.sub.2] is 2.0 mass % or less, a total amount of Li.sub.2O, Na.sub.2O, and K.sub.2O [Li.sub.2O+Na.sub.2O+K.sub.2O] is 5.0 mass % or less, and a total amount of ZnO, SrO, and BaO [ZnO+SrO+BaO] is 0.01 to 12.0 mass %.

An optical glass contains: a P.sub.2O.sub.5 component of 30 to 60 mass % (exclusive of 30); an Al.sub.2O.sub.3 component of 2 to 10 mass % (exclusive of 2); a TiO.sub.2 component of 10 to 36 mass % (exclusive of 36); an Nb.sub.2O.sub.5 component of 0 to 5 mass %; a Ta.sub.2O.sub.5 component of 0 to 15 mass %; a Bi.sub.2O.sub.3 component of 0 to 5 mass % (exclusive of 5); and an Sb.sub.2O.sub.3 component of 0 to 1 mass %; and a BaO component of 1 to 20 mass %.