Strengthened glass with biocidal property
View Patent ↗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.
1. A biocidal additive formulation comprising:
a silver containing glass particle,
ZnO, and
Bi 2 O 3 ,
wherein Bi 2 O 3 is present in an amount of 25% to 85% by weight based on the dry weight of the formulation.
2. The biocidal additive formulation according to claim 1 , wherein the silver containing glass particle is a silver salt or a silver-based ion exchange compound.
3. The biocidal additive formulation according to claim 1 , 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.
4. The biocidal additive formulation according to claim 1 , wherein ZnO is in a weight ratio to Bi 2 O 3 in a range of 1:2 to 1:3.
5. The biocidal additive formulation according to claim 1 , wherein ZnO is in a weight ratio to Bi 2 O 3 in a range of 2:1 to 3:1.
6. The biocidal additive formulation according to claim 1 , wherein ZnO is present in an amount of 5% to 85% by weight based on the dry weight of the formulation.
7. The biocidal additive formulation according to claim 6 , wherein ZnO is present in an amount of 10% to 35% by weight based on the dry weight of the formulation.
8. 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 the at least two metal based compounds are ZnO and Bi 2 O 3 , and Bi 2 O 3 is present in an amount of 25% to 85% by weight based on the dry weight of the biocidal additive formulation.
9. The method according to claim 8 , 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.
10. The method according to claim 8 , wherein ZnO is in a weight ratio to Bi 2 O 3 in a range of 1:2 to 1:3.
11. The method according to claim 8 , wherein ZnO is in a weight ratio to Bi 2 O 3 in a range of 2:1 to 3:1.
12. A glass substrate possessing a durable biocidal property comprising a biocidal additive package having a biocidal additive formulation comprising:
a silver containing glass particle,
ZnO, and
Bi 2 O 3 ,
wherein Bi 2 O 3 is present in an amount of 25% to 85% by weight based on the dry weight of the formulation.
13. 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 a biocidal additive formulation comprising:
a silver containing glass particle,
ZnO, and
Bi 2 O 3 ,
wherein Bi 2 O 3 is present in an amount of 25% to 85% by weight based on the dry weight of the formulation.
14. The article according to claim 13 , wherein the article is dishware, barware, glassware, device cover, automobile window, partition, shelving, work surface, or a touch screen.