Ceramic glaze having antimicrobial property
View Patent ↗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.
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.