Ceramic additive formulation and method of making

Patent metadata

Field	Value
Publication number	US-9974310-B2
Application number	US-201615064777-A
Country	US
Kind code	B2
Filing date	Mar 9, 2016
Priority date	Mar 9, 2016
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

A method of making a ceramic glaze formulation having an antimicrobial property for use with a ceramic article. The method comprises fritting an antimicrobial formulation in a flux frit, providing least one unfritted antimicrobial component, providing a silver carrier in a glass matrix, and combining the flux frit, the at least one unfritted component, and the silver carrier in the glass matrix to form the ceramic glaze formulation. The silver carrier is combined at an addition rate based on a dry weight basis of the ceramic glaze formulation. A ceramic glaze additive formulation and ceramic glazed article are also provided.

First claim

What is claimed is:

1. A method of making a ceramic glaze formulation having an antimicrobial property for use with a ceramic article, the method comprising:
fritting an antimicrobial formulation in a flux frit, wherein the flux frit is present in the ceramic glaze formulation in an amount of 45 weight % to 55 weight %, based on a dry weight basis of the ceramic glaze formulation;
providing least one unfritted antimicrobial component;
providing a silver carrier in a glass matrix;
combining the flux frit, the at least one unfritted component, and the silver carrier in the glass matrix to form the ceramic glaze formulation;
wherein the silver carrier is combined at an addition rate of at least 1 weight % based on a dry weight basis of the ceramic glaze formulation, and
wherein the unfritted component is unfritted Bi 2 O 3 present in the ceramic glaze formulation in a range of 12% to 20% by weight of the ceramic glaze formulation.

2. The method according to claim 1 , wherein the flux frit comprises an antimicrobial selected from the group consisting of zinc oxide, bismuth oxide, titanium oxide, tin oxide, silver compound, and a combination thereof.

3. The method according to claim 2 , wherein the flux frit comprises an antimicrobial selected from the group consisting of bismuth oxide, zinc oxide, and a combination thereof.

4. The method according to claim 3 , wherein the flux frit further comprises a glass former.

5. The method according to claim 3 , wherein Bi 2 O 3 is present in a range of 50% to 56% by weight of the flux frit.

6. The method according to claim 5 , wherein Bi 2 O 3 is present in a range of 52% to 54% by weight of the flux frit.

7. The method according to claim 3 , wherein ZnO is present in a range of 1% to 5% by weight of the flux frit.

8. The method according to claim 1 , wherein the unfritted component is selected from the group consisting of zinc oxide, bismuth oxide, titanium oxide, tin oxide, silver compound, and a combination thereof.

9. The method according to claim 1 , wherein the unfritted component is unfritted Bi 2 O 3 present in the ceramic glaze formulation in a range of 14% to 18% by weight of the ceramic glaze formulation.

10. The method according to claim 8 , wherein the unfritted component is unfritted ZnO present in the ceramic glaze formulation in a range of 29% to 37% by weight of the ceramic glaze formulation.

11. The method according to claim 10 , wherein the unfritted component is unfritted ZnO present in the ceramic glaze formulation in a range of 31% to 35% by weight of the ceramic glaze formulation.

12. A method of making a ceramic glaze formulation having an antimicrobial property for use with a ceramic article, the method comprising:
fritting an antimicrobial formulation in a flux frit, wherein the flux frit is present in the ceramic glaze formulation in an amount of 1 weight % to 10 weight %, based on a dry weight basis of the ceramic glaze formulation;
providing at least one unfritted antimicrobial component;
providing a silver carrier in a glass matrix;
combining the flux frit, the at least one unfritted antimicrobial component, and the silver carrier in the glass matrix to form the ceramic glaze formulation;
wherein the silver carrier is added to the ceramic glaze formulation at an addition rate of at least 10 weight % based on a dry weight basis of the ceramic glaze formulation;
wherein the unfritted component is selected from the group consisting of zinc oxide, bismuth oxide, titanium oxide, tin oxide, silver compound, and a combination thereof; and
wherein the unfritted component is unfritted ZnO present in the ceramic glaze formulation in a range of 80% to 90% by weight of the ceramic glaze formulation.

13. The method according to claim 12 , wherein the flux frit comprises an antimicrobial selected from the group consisting of zinc oxide, bismuth oxide, titanium oxide, tin oxide, silver compound, and a combination thereof.

14. The method according to claim 13 , wherein the flux frit comprises an antimicrobial selected from the group consisting of bismuth oxide, zinc oxide, and a combination thereof.

15. The method according to claim 14 , wherein the flux frit further comprises a glass former.

16. The method according to claim 14 , wherein Bi 2 O 3 is present in a range of 50% to 56% by weight of the flux frit.

17. The method according to claim 16 , wherein Bi 2 O 3 is present in a range of 52% to 54% by weight of the flux frit.

18. The method according to claim 14 , wherein ZnO is present in a range of 1% to 5% by weight of the flux frit.

19. The method according to claim 12 , wherein the unfritted component is unfritted ZnO present in the ceramic glaze formulation in a range of 83% to 87% by weight of the ceramic glaze formulation.

Assignees

• Microban Products

Inventors

• Campbell Jr Alvin Lamar
• Fields Nathan L

Classifications

• A01N59/16 Primary

  Heavy metals; Compounds thereof · CPC title

• C04B41/86

  Glazes; Cold glazes · CPC title

• C09D5/14

  Paints containing biocides, e.g. fungicides, insecticides or pesticides (C09D5/16 takes precedence) · CPC title

• C04B41/5022

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

• C03C8/14

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