Cleaning and disinfecting agent

• US 8,053,401 B2
• Filed: 12/18/2009
• Issued: 11/08/2011
• Est. Priority Date: 10/13/2000
• Status: Expired due to Term

• Current Assignee: Thonhauser GMBH (Zep Inc.)
• Original Assignee: Thonhauser GMBH (Zep Inc.)
• Inventors: Thonhauser, Christian, Thonhauser, Manfred
• Primary Examiner(s): Ogden, Jr.; Necholus
• Application Number:
  US12/642,168
• Publication Number:
  US 20100167973A1
• Time in Patent Office: 690 Days
• Field of Search: None
• US Class Current: 510/218
• CPC Class Codes: C11D 3/3942 Inorganic per-compounds C11D3/3902 takes precedence
• CPC Class Codes: C11D 3/3947 Liquid compositions
• CPC Class Codes: C11D 3/48 Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial compositions
• CPC Class Codes: C11D 7/06 Hydroxides

Abstract

A detergent and disinfectant in which water-soluble permanganates are used in an alkaline solution in order to initiate the oxidation of organic substances and simultaneously a chemical oxidant, preferably a peroxodisulfate, is used which is capable of producing radical reactions with catalytic support by manganates originating from the supplied permanganate, which reactions produce the oxidation of organic substances. All components are present in powder form and a respective powder mixture can be dissolved rapidly and free from residues in water. It thus represents a universally applicable, highly effective detergent and disinfectant.

Claims

1. A cleaning and disinfectant composition comprising a first oxidant comprising a water-soluble permanganate, an alkaline agent, and a second oxidant whose oxidation potential exceeds that of a mixture containing 50 mol % manganese VII and 50 mol % manganese VI;

said composition changes color upon contact during oxidation of an organic substance.

2. The composition of claim 1, wherein the second oxidant comprises a peroxodisulfate.

3. The composition of claim 1, wherein the second oxidant comprises a peroxodiphosphate.

4. The composition of claim 1, wherein the second oxidant comprises a periodate.

5. The composition of claim 1, wherein the second oxidant comprises ozone.

6. The composition of claim 1, wherein the water-soluble permanganate comprises potassium permanganate.

7. The composition of claim 1, wherein the composition has a pH value of about at least 10 and the composition is in an aqueous form ready for use for cleaning a surface in a plant.

8. The composition of claim 1, wherein the composition has a pH value of about at least 12 and the composition is in an aqueous form ready for use for cleaning a surface in a plant.

9. The composition of claim 1, wherein the composition is in a form of a liquid.

10. The composition of claim 1, wherein the composition is in a form of a powder.

11. The composition of claim 1, wherein the composition is in a form of a powder that dissolves in water free from a residue.

12. The composition of claim 1, wherein an oxidation potential of the second oxidant exceeds that of a mixture containing 50 mol % HO₂⁻

and 50 mol % OH⁻

.

13. The composition of claim 1, wherein the water-soluble permanganate reacts with the organic substance.

14. The composition of claim 1, wherein both the water-soluble permanganate and the second oxidant react with the organic substance.

15. The composition of claim 1, wherein the color change is from purple to a second color other than purple.

16. The composition of claim 1, wherein the composition is configured to monitor a cleaning progress during a cleaning operation.

17. The composition of claim 1, wherein the composition changes color on contact with the organic substance, wherein said color change allows a visual evaluation of an amount of the organic substance oxidized by the composition.

18. The composition of claim 1, wherein the alkaline agent has a composition configured to secure an alkaline environment with a pH value of about at least 10.

19. The composition of claim 1, wherein said alkaline agent is formulated to secure an alkaline environment with a pH value of about at least 12.

20. The composition of claim 1, wherein the composition is configured to sterilize a container.

21. The composition of claim 1, wherein the composition is configured to clean a brewery.

22. The composition of claim 1, wherein the composition is configured to clean a surface in a plant.

23. The composition of claim 1, wherein the alkaline agent comprises NaOH.

24. The composition of claim 1, further comprising an oxidation resistant polyphosphate.

25. The composition of claim 1, further comprising an oxidation resistant polyphosphate, wherein the oxidation resistant polyphosphate comprises potassium tripolyphosphate.

26. The composition of claim 1, wherein the alkaline agent comprises an alkali hydroxide.

27. The composition of claim 1, wherein the second oxidant comprises a hypochlorite.

28. The composition as claimed in claim 1, wherein the second oxidant comprises hypochlorite, peroxodisulfate, peroxodiphosphate, periodate, ozone or combinations thereof.

29. The composition as claimed in claim 1 wherein 7 to 8 grams of the composition is dissolved per liter of the aqueous liquid.

30. The composition as claimed in claim 1, wherein the composition comprises:

20% - 35% of 50% KOH,

5% - 25% of 50% potassium tripolyphosphate,

25% - 35% of hypochlorite lye, and

at least 0.01% KMnO₄.

31. The composition as claimed in claim 1, wherein the composition is in form of an aqueous solution having a pH value of at least 10.

32. The composition of claim 1, wherein the first oxidant is formulated to initiate oxidation of a substance external to the composition,

the alkaline agent is for securing an alkaline environment with a pH value of at least 10, and

said second oxidant is formulated to react with said water soluble permanganate during the oxidation of the substance external to the composition.

33. The composition as claimed in claim 1, wherein the composition comprises:

28% of 50% KOH,

15% of 50% potassium tripolyphosphate,

30% of hypochlorite lye, and

at least 0.01% KMnO₄.

34. The composition as claimed in claim 1, wherein said alkaline agent is formulated to secure an alkaline environment with a pH value of at least 12.

35. A composition of claim 1, comprising:

50% - 70% NaOH,

20% - 35% potassium tripolyphosphate,

10% - 20% Na₂S₂O₈, and

at least 0.01% KMnO₄.

36. The composition as in claim 1, wherein an oxidation potential of the second oxidant exceeds that of a mixture containing 50 mol % HO₂⁻

and 50 mol % OH⁻

.

37. The composition as in claim 26, wherein the alkali hydroxide comprises NaOH.

38. The composition as in claim 24, wherein the oxidation resistant polyphosphate comprises potassium tripolyphosphate.

39. The composition of claim 1, wherein said color change allows a visual evaluation of an amount of the organic substance oxidized by the composition.

40. The composition as claimed in claim 1, wherein the color change is from purple to a second color other than purple.

41. The composition as claimed in claim 40, wherein the second color is green.

42. The composition as claimed in claim 40, wherein the second color is yellow.

43. The composition of claim 1, wherein the water-soluble permanganate reacts with the organic substance.

44. The composition of claim 2, wherein the peroxodisulfate reacts with the organic substance.

45. A method comprising obtaining a composition of claim 1, and exposing the composition to a substance external to the composition.

46. The method of claim 45, further comprising obtaining a color change in the composition or evaluating the color change.

47. The method of claim 45, further comprising adding the composition in a form of a powder to water.

48. The method of claim 45, wherein the powder dissolves in the water free from a residue.

49. The method of claim 45, wherein the method is configured to monitor a cleaning progress during a cleaning operation.

50. The method of claim 45, wherein the method comprises cleaning a surface in a plant.

51. The method of claim 45, wherein the method is configured to sterilize a container.

52. The composition of claim 1, wherein the composition is in form of an aqueous solution having a pH value of at least 12.