To provide glass including a colored layer and a manufacturing method thereof.

Provided is glass containing one or more glass components selected from the group consisting of Ti ions, Nb ions, W ions, and Bi ions. The glass includes a colored layer having an arbitrary shape.

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 %.

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 %.

An antibacterial composition, includes: a borate-based glass material having a composition of: 0-25 wt. % SiO.sub.2, 30-75 wt. % B.sub.2O.sub.3, 0-10 wt. % P.sub.2O.sub.5, 0-30 wt. % Al.sub.2O.sub.3, 0-5 wt. % Li.sub.2O, 1-25 wt. % Na.sub.2O, 0-15 wt. % K.sub.2O, 0-10 wt. % MgO, 10-25 wt. % CaO, 12-30 wt. % MO, 8-25 wt. % R.sub.2O, and 30-75 (B.sub.2O.sub.3+Al.sub.2O.sub.3), such that at least one of P.sub.2O.sub.5 or Al.sub.2O.sub.3 is present, MO is the sum of MgO, CaO, SrO, and BaO, R.sub.2O is the sum of Na.sub.2O, K.sub.2O, Li.sub.2O, and Rb.sub.2O, and the borate-based glass material is configured to achieve at least a 3.5-log kill rate of at least one of E. coli, P. gingivalis, or S. mutans bacteria.

[Problem] To provide glass having a colored layer.

[Solution] Glass having a colored layer.

To provide glass having a high refractive index and a high transmittance. Glass (10) contains at least one component selected from the group consisting of TeO.sub.2, TiO.sub.2, WO.sub.3, Nb.sub.2O.sub.5, and Bi.sub.2O.sub.3, where Bi.sub.2O.sub.3 > 11.2% is satisfied, in mole percentage on an oxide basis, in which 3.78 ≤ Nb.sub.2O.sub.5/ (TeO.sub.2 + TiO.sub.2 + WO.sub.3 + Nb.sub.2O.sub.5 + Bi.sub.2O.sub.3) × 100 ≤ 19.2 is satisfied, and a total content of Fe, Cr, and Ni is smaller than 4 ppm by mass.

Al.sub.2O.sub.3-rich compositions with desirable hardness and crack resistance for various functional applications. Also disclosed is a method of manufacturing the composition into various dimensions and shapes under a temperature much lower than in conventional methods.

Al.sub.2O.sub.3-rich compositions with desirable hardness and crack resistance for various functional applications. Also disclosed is a method of manufacturing the composition into various dimensions and shapes under a temperature much lower than in conventional methods.

A composite has repeating domains of an inorganic glass and a polymer, such that the inorganic glass and the polymer each have a glass transition temperature (T.sub.g) or softening temperature of less than 450° C., and at least 50% of the inorganic glass domains have a length of less than 30 μm as measured along at least one cross-sectional dimension.

A composite has repeating domains of an inorganic glass and a polymer, such that the inorganic glass and the polymer each have a glass transition temperature (T.sub.g) or softening temperature of less than 450° C., and at least 50% of the inorganic glass domains have a length of less than 30 μm as measured along at least one cross-sectional dimension.