Strengthened glass with biocidal property

Patent metadata

Field	Value
Publication number	US-2016143291-A1
Application number	US-201514948544-A
Country	US
Kind code	A1
Filing date	Nov 23, 2015
Priority date	Nov 25, 2014
Publication date	May 26, 2016
Grant date	—

Abstract

A biocidal additive formulation comprises a silver containing glass particle, and a combination of at least two metal based compounds. A metal in each of the metal based compounds is selected from the group consisting of silver, copper, zinc, mercury, tin, lead, bismuth, barium, cadmium, chromium, titanium, and a combination thereof. Another biocidal additive formulation comprises a silver containing glass particle, ZnO, and Bi 2 O 3 . A glass substrate possessing a durable biocidal property and an article possessing a durable biocidal property are also provided.

First claim

What is claimed is:

1 . A biocidal additive formulation comprising:
a silver containing glass particle, and a combination of at least two metal based compounds, wherein a metal in each of the metal based compounds is selected from the group consisting of silver, copper, zinc, mercury, tin, lead, bismuth, barium, cadmium, chromium, titanium, and a combination thereof.

2 . The biocidal additive formulation according to claim 1 , wherein the metal of each of the inorganic metal based compounds is selected from the group consisting of silver, zinc, bismuth, and a combination thereof.

3 . A biocidal additive formulation comprising:
a silver containing glass particle, ZnO, and Bi 2 O 3 .

4 . The biocidal additive formulation according to claim 3 , wherein the silver containing glass particle is present in a range of 0.5% to 2.5%, based on the weight of the biocidal additive formulation.

5 . The biocidal additive formulation according to claim 3 , wherein ZnO is in a weight ratio to Bi 2 O 3 in a range of 1:2 to 1:3.

6 . The biocidal additive formulation according to claim 3 , wherein ZnO is in a weight ratio to Bi 2 O 3 in a range of 2:1 to 3:1.

7 . The biocidal additive formulation according to claim 3 , wherein ZnO is present in an amount of 5% to 85% by weight based on the dry weight of the formulation.

8 . The biocidal additive formulation according to claim 3 , wherein Bi 2 O 3 is present in an amount of 5% to 85% by weight based on the dry weight of the formulation.

9 . A method for making a biocidal glass, the method comprising:
adding a biocidal additive formulation comprised of a silver containing glass particle and at least two metal based compounds as an additive package to a glass batch formulation, wherein a metal in each of the metal based compounds is selected from the group consisting of silver, copper, zinc, mercury, tin, lead, bismuth, barium, cadmium, chromium, and a combination thereof.

10 . The method according to claim 9 , wherein the metal of each of the metal based compounds is selected from the group consisting of silver, zinc, bismuth, and a combination thereof.

11 . The method according to claim 9 , wherein the at least two metal based compounds are ZnO and Bi 2 O 3 .

12 . The method according to claim 9 , wherein the silver containing glass particle is present in a range of 0.5% to 2.5%, based on the weight of the biocidal additive formulation.

13 . The method according to claim 9 , wherein ZnO is in a weight ratio to Bi 2 O 3 in a range of 1:2 to 1:3.

14 . The method according to claim 9 , wherein ZnO is in a weight ratio to Bi 2 O 3 in a range of 2:1 to 3:1.

15 . The method according to claim 9 , wherein the additive package is added in an amount in a range of at least 1% based on a dry weight of the glass batch formulation.

16 . The method according to claim 15 , wherein the additive package is added in an amount in a range of 1% to 5% based on a dry weight of a glass batch formulation.

17 . A glass substrate possessing a durable biocidal property comprising a biocidal additive package having the formulation according to claim 1 .

18 . The glass substrate according to claim 17 , wherein the glass substrate is selected from the group consisting of sandwiched, tempered, strengthened, laminated, and a combination thereof.

19 . An article constructed, in whole or in part, of a glass substrate possessing a durable biocidal property, the article comprising a biocidal additive package having the formulation according to claim 1 .

20 . The article according to claim 19 , wherein the article is dishware, barware, glassware, device cover, automobile window, partition, shelving, work surface, or a touch screen.

Assignees

• Microban Products

Inventors

• Campbell Jr Alvin Lamar

Classifications

• A01N59/16 Primary

  Heavy metals; Compounds thereof · CPC title