IP Library Granted Patent US 9,204,655
Granted Patent B2
US 9,204,655 · App. 13/303,267 · Granted Dec 8, 2015

Antimicrobial surface treatment

Inventors: Randal D. Stevenson (Cottage Grove, WI); Thomas J. Fahey (Okemos, MI)
Assignee: DeVere Company, Inc.
A01N59/00A01N25/12C11D3/3907C11D3/3955C11D3/48A61L2209/22
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Quick Facts
Patent No.
US 9,204,655
App. No.
13/303,267
Granted
Dec 8, 2015
Kind
B2
Abstract

A surface treatment powder comprising (a) about 50 wt. % or more of a percarbonate, perphosphate, persulfate, peroxide or perborate salt; (b) about 0.2-10 wt. % of a chlorinated isocyanurate salt; and (c) a bleach activator, and method of using same to inhibit the growth of a microorganism on a surface.

Claims (36)

1. A surface treatment powder comprising:

(a) about 50 wt. % or more of a percarbonate, perphosphate, persulfate, peroxide or perborate salt;

(b) about 0.2-10 wt. % of a chlorinated isocyanurate salt; and

(c) a bleach activator,

wherein the surface treatment powder is substantially free of binders.

2. The surface treatment powder of claim 1 further comprising an alkaline pH adjuster.

3. The surface treatment powder of claim 2 , wherein the alkaline pH adjuster is a carbonate salt.

4. The surface treatment powder of claim 1 further comprising about 0.1-1 wt % of a surfactant.

5. The surface treatment powder of claim 1 comprising about 50 wt. % or more of a percarbonate salt.

6. The surface treatment powder of claim 1 comprising about 75 wt % or more of a percarbonate salt.

7. The surface treatment powder of claim 1 comprising about 0.2-10 wt % of a dichloroisocyanurate salt.

8. The surface treatment powder of claim 1 comprising about 0.5-2 wt. % of a dichloroisocyanurate salt.

9. The surface treatment powder of claim 1 , wherein the bleach activator is tetra acetyl ethylene diamine (TAED).

10. The surface treatment powder of claim 9 , comprising about 0.01-1 wt. % TAED.

11. The surface treatment powder of claim 9 , comprising about 0.05-0.5 wt. % TAED.

12. The surface treatment powder of claim 1 , wherein the surface treatment powder is substantially free of quaternary ammonium compounds.

13. The surface treatment powder of claim 1 , wherein the surface treatment powder is substantially free of iodine or iodophors.

14. The surface treatment powder of claim 1 , wherein the surface treatment powder is substantially free of enzymes.

15. A method of inhibiting the growth of a microorganism on a surface comprising applying the surface treatment powder of claim 1 to the surface and combining the surface treatment powder with water.

16. The method of claim 15 , wherein the surface treatment powder is combined with water by applying the powder to a wet surface.

17. The method of claim 15 , wherein the surface is concrete.

18. The method of claim 15 , wherein the microorganism is Listeria, S. enterica , or Escherichia coli.

19. The surface treatment powder of claim 1 , further comprising about 1 wt. % or less of a surfactant.

20. A surface treatment powder comprising:

(a) about 50 wt. % or more of a percarbonate, perphosphate, persulfate, peroxide or perborate salt;

(b) about 0.2-10 wt. % of a chlorinated isocyanurate salt; and

(c) 0.05-0.5 wt. % of a bleach activator, wherein the surface treatment powder is substantially free of binders.

21. A surface treatment powder consisting essentially of:

(a) about 50 wt. % or more of a percarbonate, perphosphate, persulfate, peroxide or perborate salt;

(b) about 0.2-10 wt. % of a chlorinated isocyanurate salt;

(c) about 0.05-0.5 wt. % of a bleach activator;

(d) about 5-15 wt. % of an alkaline pH adjuster; and, optionally,

(e) about 1 wt. % or less of a surfactant

wherein the surface treatment powder does not comprise a compacted solid, and the surface treatment powder is substantially free of binders.

22. The surface treatment powder of claim 21 , wherein the surface treatment powder comprises about 0.2-2 wt. % of a chlorinated isocyanurate salt.

23. The surface treatment powder of claim 22 , wherein the surface treatment powder is substantially free of binders.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 5, 2012
From: STEVENSON, RANDAL D.; FAHEY, THOMAS J.
To: DEVERE COMPANY, INC.
Reel/Frame 027483/0356 →
Continuity (2)
Provisional Application 61529708 · Aug 31, 2011
Related Publication 20130052342A1 · Feb 28, 2013