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US 2015/0030861 A1Published application
Ceramic glaze having antimicrobial property
AssigneeMicroban Products Company
InventorAlvin Lamar Campbell, JR.
Life of this patent
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Abstract
An antimicrobial ceramic glazing composition contains one or more antimicrobial agents disposed therein. Methods for making and using the glazing composition are disclosed, as well as substrates having a fired antimicrobial glaze thereon. The antimicrobial agents comprise metallic oxides, with a subset of the disclosed combinations exhibiting synergistic effect in fired glazes.
Claims11
An antimicrobial ceramic glazing composition, comprising:
- a ceramic glaze base adapted to be fired at a firing temperature of from at least about 1062° C.;
- and
- an antimicrobial composition including:
- a first antimicrobial metal compound consisting of Bi2O3;
- and
- a second antimicrobial metal compound consisting of ZnO;
- wherein the first antimicrobial metal compound is present in the glaze composition at a concentration of about one percent to about four percent, by weight of glaze composition;
- and
- wherein the second antimicrobial metal compound is present in the glaze composition at a concentration of from about one percent to about four percent, by weight of glaze composition;
- and
- wherein the glazing composition is adapted to possess a durable antimicrobial property after a conventional firing process at the firing temperature.
8 more elements
A method for manufacturing a glazed ceramic substrate having an antimicrobial property, comprising:
- applying an antimicrobial ceramic glazing composition to a substrate, the glazing composition including an antimicrobial composition comprising:
- a first antimicrobial metal compound consisting of Bi2O3, and
- a second antimicrobial metal compound consisting of ZnO,
- wherein the first antimicrobial metal compound is present in the glaze composition at a concentration of about one percent to about four percent, by weight of glaze composition;
- and
- wherein the second antimicrobial metal compound is present in the glaze composition at a concentration of from about one percent to about four percent, by weight of glaze composition;
- and
- firing the glazing composition to transform the glazing composition into a fired glaze layer;
- wherein the fired glazed layer possesses a durable antimicrobial property.
6 more elements
A glazed ceramic substrate having an antimicrobial property comprising:
- a ceramic substrate having a first substrate surface;
- and
- a fired antimicrobial composition disposed on the first substrate surface;
- wherein the fired antimicrobial composition is a post-fired state of a ceramic glazing composition including:
- a first antimicrobial metal compound consisting of Bi2O3,
- a second antimicrobial metal compound consisting of ZnO, and
- a third antimicrobial metal compound consisting of Ag2CO3,
- wherein the first antimicrobial metal compound is present in the glaze composition at a concentration of about one percent to about four percent, by weight of glaze composition,
- wherein the second antimicrobial metal compound is present in the glaze composition at a concentration of from about one percent to about four percent, by weight of glaze composition, and
- wherein the first antimicrobial metal compound is present in the glaze composition at a concentration of about one percent to about two percent, by weight of glaze composition.
7 more elements
A glazed ceramic substrate having an antimicrobial property, comprising:
- a ceramic substrate having a first substrate surface;
- and
- a fired antimicrobial composition disposed on the first substrate surface;
- wherein the fired antimicrobial composition is a post-fired state of a ceramic glazing composition including:
- a first antimicrobial metal compound consisting of Bi2O3;
- and
- a second antimicrobial metal compound consisting of ZnO;
- wherein the first antimicrobial metal compound is present in the glaze composition at a concentration of about one percent to about four percent, by weight of glaze composition;
- and
- wherein the second antimicrobial metal compound is present in the glaze composition at a concentration of from about one percent to about four percent, by weight of glaze composition.
7 more elements
A method for manufacturing an antimicrobial ceramic glazing composition, comprising:
- adding, to the ceramic glaze base, an antimicrobial composition that is:
- a first antimicrobial metal compound consisting of Bi2O3, and
- a second antimicrobial metal compound consisting of ZnO,
- wherein the first antimicrobial metal compound is present in the glaze composition at a concentration of about one percent to about four percent, by weight of glaze composition;
- and
- wherein the second antimicrobial metal compound is present in the glaze composition at a concentration of from about one percent to about four percent, by weight of glaze composition;
- or
- milling the ceramic glaze base and added antimicrobial composition;
- rehydrating the milled ceramic glaze base;
- and
- optionally, remixing the rehydrated glaze base.
8 more elements
A method for manufacturing an antimicrobial ceramic glazing composition, comprising:
- adding, to the ceramic glaze base, an antimicrobial composition that is:
- a first antimicrobial metal compound consisting of Bi2O3,
- a second antimicrobial metal compound consisting of ZnO, and
- a third antimicrobial metal compound consisting of Ag2CO3,
- wherein the first antimicrobial metal compound is present in the glaze composition at a concentration of about one percent to about four percent, by weight of glaze composition;
- wherein the second antimicrobial metal compound is present in the glaze composition at a concentration of from about one percent to about four percent, by weight of glaze composition, and
- wherein the second antimicrobial metal compound is present in the glaze composition at a concentration of from about one percent to about two percent, by weight of glaze composition;
- milling the ceramic glaze base and added antimicrobial composition;
- rehydrating the milled ceramic glaze base;
- and
- optionally, remixing the rehydrated glaze base.
8 more elements
Dependencies are inferred from the claim text.