Ceramic glaze having antimicrobial property

Patent metadata

Field	Value
Publication number	US-2018317493-A1
Application number	US-201816033410-A
Country	US
Kind code	A1
Filing date	Jul 12, 2018
Priority date	Feb 20, 2007
Publication date	Nov 8, 2018
Grant date	—

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; rehydrating the milled ceramic glaze base; and optionally, remixing the rehydrated 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

• C04B41/5027

  Oxide ceramics in general; Specific oxide ceramics not covered by C04B41/5029 - C04B41/5051 · CPC title

• A01N59/20

  Copper · CPC title

• A01N25/08

  containing solids as carriers or diluents · CPC title

• C04B41/0072

  Heat treatment · CPC title

• C04B41/5049

  Zinc or bismuth oxides · CPC title