Ceramic glaze having antimicrobial property

Patent metadata

Field	Value
Publication number	US-10856549-B2
Application number	US-201816033410-A
Country	US
Kind code	B2
Filing date	Jul 12, 2018
Priority date	Feb 20, 2007
Publication date	Dec 8, 2020
Grant date	Dec 8, 2020

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.

First claim

What is claimed is:

1. A method for manufacturing an antimicrobial ceramic glazing composition, comprising:
adding, to a ceramic glaze base, an antimicrobial composition comprising:
a first antimicrobial agent consisting of Ag 2 CO 3 , and
a second antimicrobial agent that is one of Bi 2 O 3 , CuO, or ZnO,
wherein the first antimicrobial agent is present in the glaze composition at a concentration of about 0.5 to about four percent, by weight of glaze composition, and wherein the second antimicrobial agent is present in the glaze composition at a concentration of from about one percent to about four percent, by weight of glaze composition; and
milling the ceramic glaze base and added antimicrobial composition;
hydrating the milled ceramic glaze base; and
optionally, remixing the hydrated glaze base.

2. The method of claim 1 wherein the second antimicrobial agent is Bi 2 O 3 .

3. The method of claim 1 wherein the second antimicrobial agent is ZnO.

4. The method of claim 1 wherein the first antimicrobial agent and the second antimicrobial agent are present in the glaze composition at substantially equal concentrations.

5. The method of claim 1 wherein the concentration of the first antimicrobial agent in the glaze composition is about two percent;
wherein the second antimicrobial agent is one of Bi 2 O 3 , CuO, or ZnO.

6. The method of claim 1 wherein the concentration of the first antimicrobial agent in the glaze composition is about four percent; and
wherein the second antimicrobial agent is present in the glaze composition at a concentration of about two percent.

Assignees

• Microban Products

Inventors

• Campbell Jr Alvin Lamar

Classifications

• A01N59/02

  Sulfur; Selenium; Tellurium; Compounds thereof · CPC title

• A01N59/16 Primary

  Heavy metals; Compounds thereof · CPC title

• C03C8/14

  Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions · CPC title

• C03C2209/00

  Compositions specially applicable for the manufacture of vitreous glazes · CPC title

• C04B41/009

  characterised by the material treated · CPC title