Colorless copper-containing material

Patent metadata

Field	Value
Publication number	US-10550270-B2
Application number	US-201615737410-A
Country	US
Kind code	B2
Filing date	Jun 22, 2016
Priority date	Jun 26, 2015
Publication date	Feb 4, 2020
Grant date	Feb 4, 2020

Abstract

Aspects of this disclosure pertain to a colorless material that includes a carrier, copper-containing particles, and either one or both of sodium thiocyanate and titanium dioxide. In one or more embodiments, the material exhibits, in the CIE L*a*b* system, an L* value in the range from about 91 to about 100, and a C* value of less than about 7, wherein C* equals √(a*2+b*2). In some embodiments, the material exhibits a greater than 3 log reduction in a concentration of Staphylococcus aureus, under the EPA Test Method for Efficacy of Copper Alloy as a Sanitizer testing conditions.

First claim

What is claimed is:

1. A colorless material comprising
a carrier;
copper-containing particles; and
sodium thiocyanate,
wherein the material exhibits, in the CIE L*a*b* system, an L* value in the range from about 91 to about 100, and a C* value of less than about 7, wherein C* equals √(a* 2 +b* 2 ),

and
wherein the material exhibits a greater than 3 log reduction in a concentration of Staphylococcus aureus , under the EPA Test Method for Efficacy of Copper Alloy as a Sanitizer testing conditions.

2. The material of claim 1 , wherein the copper-containing particles comprise a copper-containing glass.

3. The material of claim 1 , wherein the copper-containing particles comprise cuprous oxide.

4. The material of claim 1 , wherein the copper-containing particles are present in an amount of about 200 g/gallon of the carrier or less.

5. The material of claim 1 , wherein the sodium thiocyanate is present in an amount of about 100 g/gallon or less.

6. The material of claim 1 , wherein the carrier comprises a polymer, a monomer, a binder or a solvent.

7. The material of claim 1 , wherein the carrier comprises paint.

8. The material of claim 2 , wherein the copper-containing glass comprises a cuprite phase comprising a plurality of Cu 1+ ions, and comprising at least one of B 2 O 3 , P 2 O 5 and R 2 O, wherein R is at least one of K, Na, Li, Rb, and Cs.

9. The material of claim 8 , further comprising a glass phase, wherein the glass phase comprises more than 40 mol % SiO 2 .

10. The material of claim 8 , wherein the cuprite phase is degradable and leaches in the presence of water.

11. A paint comprising:
a plurality of cuprous ions,
sodium thiocyanate,
wherein the paint exhibits a 99% or greater reduction in a concentration of Staphylococcus aureus , under the EPA Test Method for Efficacy of Copper Alloy as a Sanitizer testing conditions, and
wherein the paint exhibits, in the CIE L*a*b* system, an L* value in the range from about 90 to about 100, and a C* value of less than about 9, wherein C* equals √(a* 2 +b* 2 ).

12. The paint of claim 11 , further comprising copper-containing particles, wherein the particle comprise either one or both of copper-containing glass and cuprous oxide, wherein the copper-containing particles are present in an amount of about 200 g/gallon or less.

Assignees

• Corning Inc

Inventors

• Lahiri Joydeep
• Lynn Jeffrey Glenn
• Verrier Florence Christine Monique

Classifications

• C08K7/20

  Glass · CPC title

• C09D5/1618

  inorganic · CPC title

• C03C2214/04

  Particles; Flakes · CPC title

• C03C14/004

  the non-glass component being in the form of particles or flakes · CPC title

• A01N59/24

  Cyanogen or compounds thereof, e.g. hydrogen cyanide, cyanic acid, cyanamide, thiocyanic acid · CPC title