Ceramic glaze having antimicrobial property

Patent metadata

Field	Value
Publication number	US-9446981-B2
Application number	US-201313931810-A
Country	US
Kind code	B2
Filing date	Jun 28, 2013
Priority date	Feb 20, 2007
Publication date	Sep 20, 2016
Grant date	Sep 20, 2016

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. 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 Bi 2 O 3 ;
a second antimicrobial metal compound consisting of ZnO; and
a third antimicrobial metal compound consisting of Ag 2 CO 3 ;
wherein the first antimicrobial metal compound, the second antimicrobial metal compound and the third antimicrobial metal compound each have a concentration in the ceramic glaze composition of about two percent; and
wherein the glazing composition is adapted to possess an antimicrobial property after a conventional firing process at the firing temperature.

2. An antimicrobial ceramic glazing composition, comprising:
a ceramic glaze base; and
an antimicrobial composition including:
a first antimicrobial agent consisting of Bi 2 O 3 ;
a second antimicrobial agent consisting of ZnO; and
a third antimicrobial agent consisting of Ag 2 CO 3 ;
wherein the first antimicrobial metal compound, the second antimicrobial metal compound and the third antimicrobial metal compound each have a concentration in the ceramic glaze composition of about two percent.

3. 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 Bi 2 O 3 ,
a second antimicrobial metal compound consisting of ZnO, and
a third antimicrobial metal compound consisting of Ag 2 CO 3 ,
wherein the first antimicrobial metal compound, the second antimicrobial metal compound and the third antimicrobial metal compound each have a concentration in the ceramic glaze composition of about two percent.

Assignees

• Microban Products

Inventors

• Campbell Jr Alvin Lamar

Classifications

• C03C2204/02

  Antibacterial glass, glaze or enamel · CPC title

• C04B41/5022

  with vitreous materials (composition of vitreous glazes and enamels C03C; ceramic pigments C09C1/0009) · CPC title

• C04B41/009

  characterised by the material treated · CPC title

• C03C8/14

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

• A61K33/38

  Silver; Compounds thereof · CPC title