Warewashing composition for use in automatic dishwashing machines, and method for using

• US 20080020960A1
• Filed: 07/24/2006
• Published: 01/24/2008
• Est. Priority Date: 07/24/2006
• Status: Active Grant

• Current Assignee: Ecolab USA Incorporated (Ecolab, Inc.)
• Original Assignee: Ecolab USA Incorporated (Ecolab, Inc.)
• Inventors: Smith, Kim R., Olson, Keith E., Bartelme, Michael J.
• Granted Patent: US 7,759,299 B2
• Time in Patent Office: Days
• US Class Current: 510/267
• CPC Class Codes: C11D 17/003 Colloidal solutions, e.g. gels; Thixotropic solutions or pastes
• CPC Class Codes: C11D 3/0073 Anticorrosion compositions
• CPC Class Codes: C11D 3/0084 Antioxidants; Free-radical scavengers
• CPC Class Codes: C11D 3/046 Salts

Abstract

A warewashing detergent composition is provided according to the invention. The warewashing detergent composition includes a cleaning agent, an alkaline source, and a corrosion inhibitor. The cleaning agent comprises a detersive amount of a surfactant. The alkaline source is provided in an amount effective to provide a use composition having a pH of at least about 8. The corrosion inhibitor includes a source of aluminum ion and at least one of a source of calcium ion or a source of magnesium ion. The amounts of calcium ion or magnesium ion can be selected depending upon the hardness of the water of dilution. Methods for using a warewashing detergent composition are provided.

Claims

1. A warewashing detergent composition comprising:

(a) a cleaning agent comprising a detersive amount of a surfactant;

(b) an alkaline source in an amount effective to provide a use composition having a pH of at least about 8 when measured at a solids concentration of about 0.5wt. %; and

(c) a corrosion inhibitor in an amount sufficient for reducing corrosion of glass when the warewashing detergent composition is combined with water of dilution at a dilution ratio of dilution water to detergent composition of at least about 20;

1, the corrosion inhibitor comprising;

(i) a source of aluminum ion; and

(ii) at least one of a source of calcium ion or a source of magnesium ion.

2. A warewashing detergent composition according to claim 1, wherein the detergent composition comprises about 0.05 wt. % to about 15 wt. % of the cleaning agent.

3. A warewashing detergent composition according to claim 1, wherein the cleaning agent comprises an anionic surfactant, a nonionic surfactant, a cationic surfactant, or a zwitterionic surfactant.

4. A warewashing detergent composition according to claim 1, wherein the detergent composition comprises between about 0.05 wt. % and about 15 wt. % of the corrosion inhibitor.

5. A warewashing detergent composition according to claim 1, wherein the source of aluminum ion comprises at least one of sodium aluminate, aluminum bromide, aluminum chlorate, aluminum chloride, aluminum iodide, aluminum nitrate, aluminum sulfate, aluminum acetate, aluminum formate, aluminum tartrate, aluminum lactate, aluminum oleate, aluminum bromate, aluminum borate, aluminum potassium sulfate, aluminum zinc sulfate, aluminum phosphate, aluminum oxide, aluminum silicate, sodium aluminosiliate, or mixtures thereof.

6. A warewashing detergent composition according to claim 1, wherein the corrosion inhibitor comprises the source of calcium ion, and the source of calcium ion comprises at least one of calcium borate, calcium perborate, calcium percarbonate, calcium acetate, calcium arsenate, calcium arsenide, calcium azide, calcium benzoate, calcium meta-borate, calcium hexa-boride, calcium bromate, calcium bromide, calcium di-carbide, calcium carbonate, calcium chlorate, calcium chloride, calcium chlorite, calcium chromate, calcium citrate, calcium cyanamide, calcium cyanide, calcium diphosphate, calcium dithionate, calcium fluoride, calcium difluoride hexakisphosphate, calcium formate, calcium d-gluconate, calcium glycerophosphate, calcium hydride, calcium hydrogen phosphate, calcium hydrogen sulfide, calcium hydroxide, calcium hypochlorite, calcium iodate, calcium iodide, calcium iron oxide, calcium lactate, calcium laurate, calcium lead oxide, calcium magnesium carbonate, calcium magnesium silicon oxide, calcium metaphosphate, calcium molybdate, calcium nitrate, calcium nitride, calcium nitrite, calcium oleate, calcium oxalate, calcium oxide, calcium palmitate, calcium pantothenate, calcium perchlorate, calcium permanganate, calcium peroxide, calcium phosphate, calcium phosphide, calcium phosphinate, calcium salicylate, calcium selenate, calcium selenide, calcium silicate, calcium di-silicide, calcium silicon oxide, calcium silicon titanium oxide, calcium stearate, calcium succinate, calcium sulfate, calcium sulfide, calcium sulfite, calcium tartrate, calcium meso-tartrate-3-water telluride, calcium thiosulfate, calcium titanate, calcium titanium oxide, calcium tungstate, calcium vanadium oxide, calcium aluminosilicate, calcium zirconate, or mixtures thereof.

7. A warewashing detergent composition according to claim 1, wherein the corrosion inhibitor comprises the source of magnesium ion, and the source of magnesium ion comprises at least one of magnesium borate, magnesium perborate, magnesium percarbonate, magnesium acetate, magnesium acetylsalicylate, magnesium di-aluminate, magnesium amide, magnesium antimonide, magnesium arsenate, magnesium arsenide, magnesium benzoate, magnesium bismuthide, magnesium borate, magnesium di-borate, magnesium di-boride, magnesium bromate, magnesium bromide, magnesium carbonate, magnesium carbonate-hydroxide, magnesium chlorate, magnesium chloride, magnesium chromate, magnesium citrate, magnesium diphosphate, magnesium ferrate, magnesium fluoride, magnesium formate, magnesium germanide, magnesium hydride, magnesium hydrogen arsenate, magnesium hydrogen phosphate, magnesium hydroxide, magnesium iodate, magnesium iodide, magnesium lactate, magnesium mandelate, magnesium molybdate, magnesium nitrate, magnesium nitride, magnesium nitrite, magnesium oleate, magnesium oxalate, magnesium oxide, magnesium perchlorate, magnesium permanganate, magnesium peroxide, magnesium peroxoborate, magnesium phosphate, magnesium phosphide, magnesium phosphinate, magnesium salicylate, magnesium silicate, magnesium silicon oxide, magnesium sulfate, magnesium d-tartrate, magnesium telluride, magnesium thiosulfate, magnesium aluminosilicate, magnesium tungstate, or mixtures thereof.

8. A warewashing detergent composition according to claim 1, wherein the composition is free of phosphorous containing compounds.

9. A warewashing detergent composition according to claim 1, wherein the composition comprises about 1 wt. % to about 60 wt. % of a builder, wherein the builder comprises a non-phosphorous containing builder.

10. A warewashing detergent composition according to claim 1, wherein the corrosion inhibitor further comprises a source of zinc ion.

11. A warewashing detergent composition according to claim 10, wherein the source of zinc ion comprises at least one of zinc chloride, zinc sulfate, zinc nitrate, zinc iodide, zinc thiocyanate, zinc fluorosilicate, zinc dichromate, zinc chlorate, sodium zincate, zinc gluconate, zinc acetate, zinc benzoate, zinc citrate, zinc lactate, zinc formate, zinc bromate, zinc bromide, zinc fluoride, zinc fluosilicate, zinc salicylate, zinc oxide, zinc aluminate, zinc silicate, zinc aluminosilicate, or mixtures thereof.

12. A warewashing detergent composition according to claim 10, wherein the composition comprises about 1 wt. % to about 60 wt. % of a builder, wherein the builder comprises a phosphorous containing builder.

13. A warewashing detergent composition according to claim 1, wherein the alkaline source comprises at least one of an alkali metal carbonate, an alkali metal hydroxide, and a mixture thereof.

14. A warewashing detergent composition according to claim 1, wherein the alkaline source comprises at least one of sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, sodium sesquicarbonate, potassium sesquicarbonate, or mixtures thereof.

15. A warewashing detergent composition according to claim 1, wherein the alkaline source comprises at least one of sodium hydroxide, potassium hydroxide, or mixtures thereof.

16. A warewashing detergent composition according to claim 1, wherein the corrosion inhibitor comprises a calcium/aluminum corrosion inhibitor.

17. A warewashing detergent composition according to claim 1, wherein the corrosion inhibitor comprises a calcium/aluminum corrosion inhibitor provided having a molar ratio of calcium ion to aluminum ion of less than about 1:

4 or a molar ratio of calcium ion to aluminum ion of greater than about 2;

1.

18. A warewashing detergent composition according to claim 1, wherein the corrosion inhibitor comprises a magnesium/aluminum corrosion inhibitor.

19. A warewashing detergent composition according to claim 1, wherein the corrosion inhibitor comprises a magnesium/aluminum corrosion inhibitor having a molar ratio of magnesium ion to aluminum ion that is greater than about 1:

3 or a ratio of the magnesium ion to the aluminum ion that is less than about 3;

1.

20. A warewashing detergent composition according to claim 1, wherein the corrosion inhibitor comprises a calcium/magnesium/aluminum corrosion inhibitor.

21. A warewashing detergent composition according to claim 10, wherein the corrosion inhibitor comprises a calcium/zinc/aluminum corrosion inhibitor.

22. A warewashing detergent composition according to claim 10, wherein the corrosion inhibitor comprises a magnesium/zinc/aluminum corrosion inhibitor.

23. A warewashing detergent composition according to claim 10, wherein the corrosion inhibitor comprises a calcium/magnesium/zinc/aluminum corrosion inhibitor.

30. A method according to claim 22, wherein the corrosion inhibitor comprises the source of magnesium ion and the source of magnesium ion, comprises at least one of magnesium borate, magnesium perborate, magnesium percarbonate, magnesium acetate, magnesium acetylsalicylate, magnesium di-aluminate, magnesium amide, magnesium antimonide, magnesium arsenate, magnesium arsenide, magnesium benzoate, magnesium bismuthide, magnesium borate, magnesium di-borate, magnesium di-boride, magnesium bromate, magnesium bromide, magnesium carbonate, magnesium carbonate-hydroxide, magnesium chlorate, magnesium chloride, magnesium chromate, magnesium citrate, magnesium diphosphate, magnesium ferrate, magnesium fluoride, magnesium formate, magnesium germanide, magnesium hydride, magnesium hydrogen arsenate, magnesium hydrogen phosphate, magnesium hydroxide, magnesium iodate, magnesium iodide, magnesium lactate, magnesium mandelate, magnesium molybdate, magnesium nitrate, magnesium nitride, magnesium nitrite, magnesium oleate, magnesium oxalate, magnesium oxide, magnesium perchlorate, magnesium permanganate, magnesium peroxide, magnesium peroxoborate, magnesium phosphate, magnesium phosphide, magnesium phosphinate, magnesium salicylate, magnesium silicate, magnesium silicon oxide, magnesium sulfate, magnesium d-tartrate, magnesium telluride, magnesium thiosulfate, magnesium aluminosilicate, magnesium tungstate, or mixtures thereof.

24. A method for using a warewashing detergent composition, the method comprising:

(a) diluting a warewashing detergent composition with water at a dilution ratio of water to warewashing detergent composition of at least about 20;

1, wherein the warewashing detergent composition comprises;

(i) a cleaning agent comprising a detersive amount of a surfactant;

(ii) an alkaline source in an amount effective to provide a use composition having a pH of at least about 8 when measured at a solids concentration of about 0.5 wt. %; and

(iii) a corrosion inhibitor in an amount sufficient for reducing corrosion of glass when the warewashing detergent composition is combined with water of dilution at a dilution ratio of dilution water to detergent composition of at least about 20;

1, the corrosion inhibitor comprising;

(A) a source of aluminum ion; and

(B) at least one of a source of calcium ion or a source of magnesium ion; and

(b) washing glass with the use composition in an automatic dishwashing machine.

25. A method according to claim 24, wherein the detergent composition comprises about 0.05 wt. % to about 15 wt. % of the cleaning agent.

26. A method according to claim 24, wherein the cleaning agent comprises an anionic surfactant, a nonionic surfactant, a cationic surfactant, or a zwitterionic surfactant.

27. A method according to claim 24, wherein the detergent composition comprises between about 0.05 wt. % and about 15 wt. % of the corrosion inhibitor.

28. A method according to claim 24, wherein the source of aluminum ion comprises at least one of sodium aluminate, aluminum bromide, aluminum chlorate, aluminum chloride, aluminum iodide, aluminum nitrate, aluminum sulfate, aluminum acetate, aluminum formate, aluminum tartrate, aluminum lactate, aluminum oleate, aluminum bromate, aluminum borate, aluminum potassium sulfate, aluminum zinc sulfate, aluminum phosphate, aluminum oxide, aluminum silicate, sodium aluminosiliate, or mixtures thereof.

29. A method according to claim 24, wherein the corrosion inhibitor comprises the source of calcium ion, and the source of calcium ion comprises at least one of calcium borate, calcium perborate, calcium percarbonate, calcium acetate, calcium arsenate, calcium arsenide, calcium azide, calcium benzoate, calcium meta-borate, calcium hexa-boride, calcium bromate, calcium bromide, calcium di-carbide, calcium carbonate, calcium chlorate, calcium chloride, calcium chlorite, calcium chromate, calcium citrate, calcium cyanamide, calcium cyanide, calcium diphosphate, calcium dithionate, calcium fluoride, calcium difluoride hexakisphosphate, calcium formate, calcium d-gluconate, calcium glycerophosphate, calcium hydride, calcium hydrogen phosphate, calcium hydrogen sulfide, calcium hydroxide, calcium hypochlorite, calcium iodate, calcium iodide, calcium iron oxide, calcium lactate, calcium laurate, calcium lead oxide, calcium magnesium carbonate, calcium magnesium silicon oxide, calcium metaphosphate, calcium molybdate, calcium nitrate, calcium nitride, calcium nitrite, calcium oleate, calcium oxalate, calcium oxide, calcium palmitate, calcium pantothenate, calcium perchlorate, calcium permanganate, calcium peroxide, calcium phosphate, calcium phosphide, calcium phosphinate, calcium salicylate, calcium selenate, calcium selenide, calcium silicate, calcium di-silicide, calcium silicon oxide, calcium silicon titanium oxide, calcium stearate, calcium succinate, calcium sulfate, calcium sulfide, calcium sulfite, calcium tartrate, calcium meso-tartrate-3-water telluride, calcium thiosulfate, calcium titanate, calcium titanium oxide, calcium tungstate, calcium vanadium oxide, calcium aluminosilicate, calcium zirconate, or mixtures thereof.

31. A method according to claim 24, wherein the composition is free of phosphorous containing compounds.

32. A method according to claim 24, wherein the composition comprises about 1 wt. % to about 60 wt. % of a builder, wherein the builder comprises a non-phosphorous containing builder.

33. A method according to claim 24, wherein the corrosion inhibitor further comprises a source of zinc ion.

34. A method according to claim 33, wherein the source of zinc ion comprises at least one of zinc chloride, zinc sulfate, zinc nitrate, zinc iodide, zinc thiocyanate, zinc fluorosilicate, zinc dichromate, zinc chlorate, sodium zincate, zinc gluconate, zinc acetate, zinc benzoate, zinc citrate, zinc lactate, zinc formate, zinc bromate, zinc bromide, zinc fluoride, zinc fluosilicate, zinc salicylate, zinc oxide, zinc aluminate, zinc silicate, zinc aluminosilicate, or mixtures thereof.

35. A method according to claim 33, wherein the composition comprises about 1 wt. % to about 60 wt. % of a builder, wherein the builder comprises a phosphorous containing builder.

36. A method according to claim 33, wherein the alkaline source comprises at least one of an alkali metal carbonate, an alkali metal hydroxide, and a mixture thereof.

37. A method according to claim 24, wherein the alkaline source comprises at least one of sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, sodium sesquicarbonate, potassium sesquicarbonate, or mixtures thereof.

38. A method according to claim 24, wherein the alkaline source comprises at least one of sodium hydroxide, potassium hydroxide, or mixtures thereof.

39. A method according to claim 24, wherein the corrosion inhibitor comprises a calcium/aluminum corrosion inhibitor.

40. A method according to claim 24, wherein the corrosion inhibitor comprises a calcium/aluminum corrosion inhibitor provided having a molar ratio of calcium ion to aluminum ion of less than about 1:

4 or a molar ratio of calcium ion to aluminum ion of greater than about 2;

1.

41. A method according to claim 24, wherein the corrosion inhibitor comprises a magnesium/aluminum corrosion inhibitor.

42. A method according to claim 24, wherein the corrosion inhibitor comprises a magnesium/aluminum corrosion inhibitor having a molar ratio of magnesium ion to aluminum ion that is greater than about 1:

3 or a ratio of the magnesium ion to the aluminum ion that is less than about 3;

1.

43. A method according to claim 24, wherein the corrosion inhibitor comprises a calcium/magnesium/aluminum corrosion inhibitor.

44. A method according to claim 33, wherein the corrosion inhibitor comprises a calcium/zinc/aluminum corrosion inhibitor.

45. A method according to claim 33, wherein the corrosion inhibitor comprises a magnesium/zinc/aluminum corrosion inhibitor.

46. A method according to claim 33, wherein the corrosion inhibitor comprises a calcium/magnesium/zinc/aluminum corrosion inhibitor.

47. A method according to claim 24, wherein the water diluting the warewashing detergent composition comprises water having a total dissolved solids content of greater than about 200 ppm.

48. A method according to claim 35, wherein the water diluting the warewashing detergent composition comprises water having a total dissolved solid content of less than about 200 ppm.