Ceramic glaze having antimicrobial property

Patent metadata

Field	Value
Publication number	US-10045538-B2
Application number	US-201615232427-A
Country	US
Kind code	B2
Filing date	Aug 9, 2016
Priority date	Feb 20, 2007
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

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 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% Ag 2 CO 3 +2% Bi 2 O 3 ,
2% Ag 2 CO 3 +2% CuO,
2% Ag 2 CO 3 +2% SnO 2 ,
2% Ag 2 CO 3 +2% ZnO,
2% Ag 2 CO 3 +4% ZnO,
2% Bi 2 O 3 +2% CuO,
2% Bi 2 O 3 +4% CuO,
2% CuO+4% Ag 2 CO 3 ,
2% CuO+4% SnO 2 ,
2% CuO+2% TiO 2 ,
2% CuO+4% TiO 2 ,
2% CuO+4% ZnO,
2% SnO 2 +4% Ag 2 CO 3 ,
2% SnO 2 +4% CuO,
2% TiO 2 +4% Ag 2 CO 3 ,
2% TiO 2 +4% CuO,
2% ZnO+4% Ag 2 CO 3 , 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.

2. 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% Ag 2 CO 3 +2% Bi 2 O 3 ,
2% Ag 2 CO 3 +2% CuO,
2% Ag 2 CO 3 +4% SnO 2 ,
2% Ag 2 CO 3 +2% ZnO,
2% Ag 2 CO 3 +4% ZnO,
2% Bi 2 O 3 +2% CuO,
2% Bi 2 O 3 +4% CuO,
2% Bi 2 O 3 +2% ZnO,
2% Bi 2 O 3 +4% ZnO,
2% CuO+4% Ag 2 CO 3 ,
2% CuO+4% SnO 2 ,
2% CuO+2% TiO 2 ,
2% CuO+4% TiO 2 ,
2% CuO+4% ZnO,
2% SnO 2 +4% Ag 2 CO 3 ,
2% SnO 2 +4% CuO,
2% TiO 2 +4% Ag 2 CO 3 ,
2% TiO 2 +4% CuO,
2% ZnO+4% Bi 2 O 3 ,
2% ZnO+4% Ag 2 CO 3 , or
2% ZnO+4% CuO,
wherein percentages are based on weight.

Assignees

• Microban Products

Inventors

• Campbell Jr Alvin Lamar

Classifications

• A61K33/30

  Zinc; Compounds thereof · CPC title

• A61K33/245

  Bismuth; Compounds thereof · CPC title

• C04B41/505

  Tin oxide · CPC title

• A01N59/20

  Copper · CPC title

• C04B41/5022

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