NON-AQUEOUS GENERATION OF CHLORINE DIOXIDE

• US 20110020472A1
• Filed: 03/19/2009
• Published: 01/27/2011
• Est. Priority Date: 03/20/2008
• Status: Active Grant

• Current Assignee: Diversey Incorporated (Sealed Air)
• Original Assignee: Diversey Incorporated (Sealed Air)
• Inventors: Coughlin, Michael F.
• Granted Patent: US 8,563,019 B2
• Time in Patent Office: Days
• US Class Current: 424/661
• CPC Class Codes: A01N 2300/00 Combinations or mixtures of active ingredients covered by classes A01N27/00 - A01N65/48 with other active or formulation relevant ingredients, e.g. specific carrier materials or surfactants, covered by classes A01N25/00 - A01N65/48
• CPC Class Codes: A01N 25/22 containing ingredients stabilising the active ingredients
• CPC Class Codes: A01N 59/00 Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
• CPC Class Codes: C01B 11/024 from chlorites

Abstract

Disclosed is a method of making a non-aqueous chlorine dioxide solution by combining a chlorite salt and a non-aqueous carboxylic acid and the non-aqueous chlorine dioxide solution made by this method. Also disclosed are methods of disinfecting an object by applying the non-aqueous chlorine dioxide solution to the object and methods of disinfecting a liquid by adding the non-aqueous chlorine dioxide solution to the liquid.

Claims

1. A method of making a non-aqueous chlorine dioxide solution comprising:

combining a chlorite salt and a non-aqueous carboxylic acid to produce a non-aqueous chlorine dioxide solution.

2. The method of claim 1, wherein the chlorite salt is sodium chlorite.

3. The method of claim 1, wherein the non-aqueous carboxylic acid is a fatty acid of the formula RCOOH, wherein R is an aliphatic group.

4. The method of claim 3, wherein the non-aqueous carboxylic acid is octanoic acid.

5. The method of claim 1, wherein the concentration of chlorite salt is at least about 0.1 g per liter non-aqueous carboxylic acid.

6. The method of claim 1, wherein the concentration of chlorite salt is at least about 1 g per liter non-aqueous carboxylic acid.

7. The method of claim 1, further comprising adding a hydrotrope to at least one of the non-aqueous carboxylic acid and the non-aqueous chlorine dioxide solution to produce a water-compatible non-aqueous chlorine dioxide solution.

8. The method of claim 1, further comprising adding an antimicrobial to at least one of the non-aqueous carboxylic acid and the non-aqueous chlorine dioxide solution.

9. The method of claim 1, further comprising adding a wetting agent to at least one of the non-aqueous carboxylic acid and the non-aqueous chlorine dioxide solution.

10. A non-aqueous chlorine dioxide solution made by the method of claim 1.

11. A method of disinfecting an object, comprising:

applying the non-aqueous chlorine dioxide solution of claim 10 to the object.

12. The method of claim 11, wherein the non-aqueous chlorine dioxide solution is applied by brushing, spraying, sponging, scrubbing, dipping, soaking, submerging, or coating the object.

13. The method of claim 11, wherein bacterial load on the object is reduced after applying the non-aqueous chlorine dioxide solution.

14. The method of claim 11, wherein the object is selected from the group consisting of a food product, a container, a plant, a surface, a mechanical device, an animal, an animal carcass, and an animal habitat.

15. The method of claim 14, wherein the food product is selected from the group consisting of a fruit, a vegetable, a meat product, a poultry product, a seafood product, a dairy product, a beverage, a ready-to-eat food, a confectionary product and a raw food.

16. The method of claim 14, wherein the surface is selected from the group consisting of a table, a floor, a countertop, a wall, a hand rail, a guard rail, a toilet, a shower, and a bath.

17. The method of claim 14, wherein the animal carcass is selected from the group consisting of livestock, poultry, and fish.

18. A method of disinfecting a liquid, comprising:

adding the non-aqueous chlorine dioxide solution of claim 10 to the liquid to produce a disinfected liquid.

19. The method of claim 18, wherein bacterial load in the disinfected liquid is reduced as compared to the liquid.

20. The method of claim 18, wherein the liquid is drinking water, cooling water, flume water, water used in food processing, water used in the manufacture of paper products, wastewater, a lubricant, an oil-based cleanser, or a water-based cleanser.

21. The method of claim 18, wherein the concentration of chlorine dioxide in the disinfected liquid is at least about 0.5 parts per million.

22. A non-aqueous chlorine dioxide solution comprising chlorine dioxide and a non-aqueous carboxylic acid.

23. The non-aqueous chlorine dioxide solution of claim 22, wherein the non-aqueous carboxylic acid is octanoic acid.