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.

A method of making a ceramic glaze additive formulation having an antimicrobial property for use with a ceramic article is provided. The method comprises fritting an antimicrobial formulation in a flux frit, providing a silver carrier in a glass matrix, combining the flux frit and the silver carrier in the glass matrix to form the ceramic glaze additive formulation, wherein the silver carrier is combined at an addition rate of at least 2 weight %, based on a dry weight basis of the ceramic glaze formulation. The flux frit is present in the ceramic glaze additive formulation in a range of 94 weight % to 99.5 weight %, based on a dry weight basis of the ceramic glaze additive formulation. A ceramic glaze additive formulation and a ceramic glazed article comprising a ceramic glaze additive formulation are also provided.

An antimicrobial article that includes: an antimicrobial composite region that includes a matrix comprising a polymeric material, and a first plurality of particles within the matrix. The particles include a phase-separable glass with a copper-containing antimicrobial agent. The antimicrobial composite region can be a film containing the first plurality of particles that is subsequently laminated to a bulk element. The first plurality of particles can also be pressed into the film or a bulk element to define an antimicrobial composite region. An exposed surface portion of the antimicrobial composite region can exhibit at least a log 2 reduction in a concentration of at least one of Staphylococcus aureus, Enterobacter aerogenes, and Pseudomonas aeruginosa bacteria under a Modified EPA Copper Test Protocol.

An antibacterial composition, includes: a silicate-based glass material having a composition of: 55-70 wt. % SiO.sub.2, 0-10 wt % B.sub.2O.sub.3, 3-18 wt. % P.sub.2O.sub.5, 0-10 wt. % A1.sub.20.sub.3, 0-5 wt. % Li.sub.2O, 12-30 wt. % Na.sub.2O, 0-15 wt. % K.sub.2O, 0-10 wt. % MgO, 1-15 wt. % CaO, 2-20 wt. % MO, and 15-35 wt. % R.sub.2O, such that MO is the sum of MgO, CaO, SrO, and BaO, such that R.sub.2O is the sum of Na.sub.2O, K.sub.2O, Li.sub.2O, and Rb.sub.2O, and such that the silicate-based glass material can achieve a 6-log kill rate of at least one of E. coli, P. gingivalis, or S. mutans bacteria.

A color-stable, antimicrobial glass powder obtained by partial ion exchange at a temperature of 300° C. to 350° C. and an exchange time of 1 to 120 minutes, is formed of a mixture of porous glass particles having micropores and macropores made of borosilicate glass continuously foamed by extrusion having a Fe.sub.2O.sub.3 content <0.2 wt %, in which the obtained glass foam is subsequently comminuted by dry grinding to average particle sizes of 1.0 to 8.0 μm. The mixture includes color stabilizers containing 0.1% to 0.2% of ammonium ions and antimicrobial metal ions from dissolved metal salts, wherein the metal ions may be silver and/or zinc and/or copper ions. A method for the production of a color-stable, antimicrobial glass powder and applications for using the color-stable, antimicrobial glass powder are also provided.

Embodiments of the present invention pertain to glass compositions, glasses and articles. The articles include an aluminosilicate glass, which may include P.sub.2O.sub.5 and K.sub.2O.

Articles include a glass, including leachable plurality of Cu.sup.1+ ions, a degradable phase, and a cuprite phase disposed within the degradable phase. The cuprite phase is disposed within the degradable phase. In aspects, the degradable phase can include B.sub.2O.sub.3, P.sub.2O.sub.5, and K.sub.2O, and a durable phase can include SiO.sub.2. In aspects, the glass can have a plurality of Cu.sup.1+ ions disposed on the surface of the glass and in the glass network and/or the glass matrix. The article may also include a polymer. The glasses and articles disclosed herein exhibit a 2 log reduction or greater in a concentration of at least one of Staphylococcus aureus, Enterobacter aerogenes, Pseudomonas aeruginosa bacteria, Methicillin Resistant Staphylococcus aureus, and E. coli, under the EPA Test Method for Efficacy of Copper Alloy as a Sanitizer testing condition and under Modified JIS Z 2801 for Bacteria testing conditions.

Embodiments of the present invention pertain to antimicrobial glass compositions, glasses and articles. The articles include a glass, which may include a glass phase and a cuprite phase. In other embodiments, the glasses include as plurality of Cu.sup.1+ ions, a degradable phase including B2O3, P.sub.2O.sub.5 and K.sub.2O and a durable phase including SiO.sub.2. Other embodiments include glasses having a plurality of Cu.sup.1+ ions disposed on the surface of the glass and in the glass network and/or the glass matrix. The article may also include a polymer. The glasses and articles disclosed herein exhibit a 2 log reduction or greater in a concentration of at least one of Staphylococcus aureus, Enterobacter aerogenes, Pseudomonas aeruginosa bacteria, Methicillin Resistant Staphylococcus aureus, and E. coli, under the EPA Test Method for Efficacy of Copper Alloy as a Sanitizer testing condition and under Modified JIS Z 2801 for Bacteria testing conditions.

The present disclosure relates to an antibacterial glass composition and a manufacturing method thereof. The antibacterial glass composition according to the present disclosure comprises: 20-45 wt % of SiO.sub.2; 1-30 wt % of B.sub.2O.sub.3; 10-30 wt % of ZnO; 5-25 wt % of one or more of Na.sub.2O, K.sub.2O and Li.sub.2O; 0.1-10 wt % of one or more of Al.sub.2O.sub.3 and TiO.sub.2; 0.1-5 wt % of NaF; and 1-10 wt % of one or more of Co.sub.3O.sub.4, CuO and Fe.sub.2O.sub.3, thereby causing no deterioration in durability and ensuring excellent antibacterial activity.

Embodiments of the present invention pertain to antimicrobial glass compositions, glasses and articles. The articles include a glass, which may include a glass phase and a cuprite phase. In other embodiments, the glasses include as plurality of Cu.sup.1+ ions, a degradable phase including B2O3, P.sub.2O.sub.5 and K.sub.2O and a durable phase including SiO.sub.2. Other embodiments include glasses having a plurality of Cu.sup.1+ ions disposed on the surface of the glass and in the glass network and/or the glass matrix. The article may also include a polymer. The glasses and articles disclosed herein exhibit a 2 log reduction or greater in a concentration of at least one of Staphylococcus aureus, Enterobacter aerogenes, Pseudomomas aeruginosa bacteria, Methicillin Resistant Staphylococcus aureus, and E. coli, under the EPA Test Method for Efficacy of Copper Alloy as a Sanitizer testing condition and under Modified JIS Z 2801 for Bacteria testing conditions.