Ceramic glaze having antimicrobial property
AssigneeMicroban Products Company
InventorAlvin Lamar Campbell, JR.
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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.
Claims5
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
- a synergistic antimicrobial composition including a first antimicrobial agent and a second antimicrobial agent, the antimicrobial composition being one of:
- 2% Ag2CO3+2% Bi2O3,
- 2% Ag2CO3+2% CuO,
- 2% Ag2CO3+4% SnO2,
- 2% Ag2CO3+2% ZnO,
- 2% Ag2CO3+4% ZnO,
- 2% Bi2O3+2% CuO,
- 2% Bi2O3+4% CuO,
- 2% CuO+4% Ag2CO3,
- 2% CuO+4% SnO2,
- 2% CuO+2% TiO2,
- 2% CuO+4% TiO2,
- 2% CuO+4% ZnO,
- 2% SnO2+4% Ag2CO3,
- 2% SnO2+4% CuO,
- 2% TiO2+4% Ag2CO3,
- 2% TiO2+4% CuO,
- 2% ZnO+4% Ag2CO3, or
- 2% ZnO+4% CuO;
- wherein the glazing composition is adapted to possess a durable antimicrobial property after a conventional firing process at the firing temperature.
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 a synergistic antimicrobial composition being one of:
- 2% Ag2CO3+2% Bi2O3,
- 2% Ag2CO3+2% CuO,
- 2% Ag2CO3+4% SnO2,
- 2% Ag2CO3+2% ZnO,
- 2% Ag2CO3+4% ZnO,
- 2% Bi2O3+2% CuO,
- 2% Bi2O3+4% CuO,
- 2% CuO+4% Ag2CO3,
- 2% CuO+4% SnO2,
- 2% CuO+2% TiO2,
- 2% CuO+4% TiO2,
- 2% CuO+4% ZnO,
- 2% SnO2+4% Ag2CO3,
- 2% SnO2+4% CuO,
- 2% TiO2+4% Ag2CO3,
- 2% TiO2+4% CuO,
- 2% ZnO+4% Ag2CO3, or
- 2% ZnO+4% CuO;
- firing the glazing composition to transform the glazing composition into a fired glaze layer;
- wherein the fired glazed layer possesses a durable antimicrobial property.
A method for manufacturing an antimicrobial ceramic glazing composition, comprising:
- adding, to the ceramic glaze base, a synergistic antimicrobial composition that is one of:
- 2% Ag2CO3+2% Bi2O3,
- 2% Ag2CO3+2% CuO,
- 2% Ag2CO3+4% SnO2,
- 2% Ag2CO3+2% ZnO,
- 2% Ag2CO3+4% ZnO,
- 2% Bi2O3+2% CuO,
- 2% Bi2O3+4% CuO,
- 2% CuO+4% Ag2CO3,
- 2% CuO+4% SnO2,
- 2% CuO+2% TiO2,
- 2% CuO+4% TiO2,
- 2% CuO+4% ZnO,
- 2% SnO2+4% Ag2CO3,
- 2% SnO2+4% CuO,
- 2% TiO2+4% Ag2CO3,
- 2% TiO2+4% CuO,
- 2% ZnO+4% Ag2CO3, or
- 2% ZnO+4% CuO;
- milling the ceramic glaze base and added antimicrobial composition;
- rehydrating the milled ceramic glaze base;
- and
- optionally, remixing the rehydrated glaze base.
A glazed ceramic substrate, comprising:
- a ceramic substrate having a first substrate surface;
- and
- a fired synergistic antimicrobial composition disposed on the first substrate surface;
- wherein the synergistic antimicrobial composition is a post-fired state of a ceramic glazing composition including one of:
- 2% Ag2CO3+2% Bi2O3,
- 2% Ag2CO3+2% CuO,
- 2% Ag2CO3+4% SnO2,
- 2% Ag2CO3+2% ZnO,
- 2% Ag2CO3+4% ZnO,
- 2% Bi2O3+2% CuO,
- 2% Bi2O3+4% CuO,
- 2% CuO+4% Ag2CO3,
- 2% CuO+4% SnO2,
- 2% CuO+2% TiO2,
- 2% CuO+4% TiO2,
- 2% CuO+4% ZnO,
- 2% SnO2+4% Ag2CO3,
- 2% SnO2+4% CuO,
- 2% TiO2+4% Ag2CO3,
- 2% TiO2+4% CuO,
- 2% ZnO+4% Ag2CO3, or
- 2% ZnO+4% CuO.
Dependencies are inferred from the claim text.