Dimensionally stable solid rinse aid

• US 8,367,600 B2
• Filed: 05/24/2012
• Issued: 02/05/2013
• Est. Priority Date: 05/25/2007
• Status: Active Grant

• Current Assignee: Ecolab USA Incorporated (Ecolab, Inc.)
• Original Assignee: Ecolab USA Incorporated (Ecolab, Inc.)
• Inventors: Kieffer, Janel M., Bartelme, Michael, Brittain, Kent, Zurbey, Matthew F., Killeen, Yvonne M.
• Primary Examiner(s): Mruk, Brian P
• Application Number:
  US13/480,031
• Publication Number:
  US 20120231992A1
• Time in Patent Office: 257 Days
• Field of Search: 510/197, 510/445, 510/457, 510/475, 510/492, 510/501, 510/524
• US Class Current: 510/445
• CPC Class Codes: C11D 1/008 Polymeric surface-active agents
• CPC Class Codes: C11D 1/146 Sulfuric acid esters
• CPC Class Codes: C11D 1/72 Ethers of polyoxyalkylene glycols
• CPC Class Codes: C11D 17/0047 Detergents in the form of bars or tablets
• CPC Class Codes: C11D 17/0052 Cast detergent compositions
• CPC Class Codes: C11D 3/0026 Low foaming or foam regulating compositions
• CPC Class Codes: C11D 3/046 Salts
• CPC Class Codes: C11D 3/323 urea or derivatives thereof
• CPC Class Codes: C11D 3/3707 Polyethers, e.g. polyalkyleneoxides

Abstract

The present invention is a solid rinse aid composition and methods of making and using the same. The solid rinse aid composition generally includes sodium sulfate and urea as solidification agents and an effective amount of an alcohol ethoxylate compound sheeting agent component and an effective amount of defoamer component. The solid rinse aid composition may also incorporate a preservative system including sodium bisulfate. The solid rinse aid composition may be phosphate-free, aminocarboxylate-free, and GRAS if desired.

Claims

1. A solid rinse aid composition comprising:

sodium sulfate;

urea;

water;

a sheeting agent comprising one or more alcohol ethoxylates;

a defoamer component comprising a polymer compound including one or more ethylene oxide groups;

sodium bisulfate; and

sorbic acid and benzoic acid;

wherein the total amount of sodium bisulfate and sorbic acid and benzoic acid is sufficient to provide a use solution having a pH less than 4.0 when the solid rinse aid composition is diluted at 10-500 parts of the solid rinse aid composition per million parts of aqueous diluent and a combined amount of sodium sulfate and urea is sufficient for solidification of the rinse aid composition.

2. The rinse aid composition of claim 1 wherein said sodium bisulfate is present in an amount of about 6.67 wt. %.

3. The rinse aid composition of claim 1 wherein said sorbic acid is present in an amount of about 0.5 wt. %.

4. The rinse aid composition of claim 1 wherein said benzoic acid is present in an amount of about 0.5 wt. %.

5. The solid rinse aid composition of claim 1 wherein said composition comprises:

1-10 wt. % sodium bisulfate, sorbic acid and benzoic acid;

wherein the total amount of sodium bisulfate, benzoic acid, and sorbic acid is sufficient to provide a use solution having a pH less than 4.0 when the solid rinse aid composition is diluted at 10-500 parts of the solid rinse aid composition per million parts of aqueous diluent.

6. The rinse aid composition of claim 5 wherein said sodium bisulfate is present in an amount of about 6.67 wt. %.

7. The rinse aid composition of claim 6 wherein said sorbic acid is present in an amount of about 0.5 wt. %.

8. The rinse aid composition of claim 5 wherein said benzoic acid is present in an amount of about 0.5 wt. %.

9. A solid rinse aid composition comprising:

sodium sulfate;

urea;

water;

sheeting agent comprising one or more alcohol ethoxylates;

defoamer component comprising a polymer compound including one or more ethylene oxide groups;

sodium bisulfate;

sorbic acid and benzoic acid;

wherein the total amount of sodium bisulfate and sorbic acid and benzoic acid is sufficient to provide a use solution having a pH less than 2.0 when the solid rinse aid composition is diluted at 10-500 parts of the solid rinse aid composition per million parts of aqueous diluent and a combined amount of sodium sulfate and urea is sufficient for solidification of the rinse aid composition.

10. The rinse aid composition of claim 9 wherein said sodium bisulfate is present in an amount of about 6.67 wt. %.

11. The rinse aid composition of claim 9 wherein said sorbic acid is present in an amount of about 0.5 wt. %.

13. The solid rinse aid composition of claim 9 further comprising 1-10 wt. % sodium bisulfate;

and sorbic acid and benzoic acid;

wherein the total amount of sodium bisulfate, sorbic acid, and benzoic acid, is sufficient to provide a use solution having a pH less than 2.0 when the solid rinse aid composition is diluted at 10-500 parts of the solid rinse aid composition per million parts of aqueous diluent.

14. The rinse aid composition of claim 13 wherein said sodium bisulfate is present in an amount of about 6.67 wt. %.

15. The rinse aid composition of claim 14 wherein said sorbic acid is present in an amount of about 0.5 wt. %.

16. The rinse aid composition of claim 13 wherein said benzoic acid is present in an amount of about 0.5 wt. %.

12. The rinse aid composition of claim wherein said benzoic acid is present in an amount of about 0.5 wt. %.

17. A preservative composition comprising:

sodium bisulfate, sorbic acid and benzoic acid.

18. The preservative composition of claim 17 wherein said sodium bisulfate is present in an amount of about 85 wt. % and said sorbic acid is present in an amount of 7.5 wt. % and said benzoic acid is present in an amount of 7.5 wt. %.

19. The preservative composition of claim 17 wherein said sodium bisulfate, sorbic acid, and benzoic acid are present in a ratio of 13.34:

1;

1, respectively.

20. A rinse aid composition comprising the preservative composition of claim 17.