Composition including potassium monopersulfate and a halogen

• US 7,255,797 B2
• Filed: 06/28/2004
• Issued: 08/14/2007
• Est. Priority Date: 08/13/2003
• Status: Expired due to Fees

• Current Assignee: Truox Incorporated
• Original Assignee: Truox Incorporated
• Inventors: Martin, Perry L.
• Primary Examiner(s): HOPKINS, ROBERT A
• Application Number:
  US10/878,899
• Publication Number:
  US 20050035065A1
• Time in Patent Office: 1,142 Days
• Field of Search: 210/753, 210/754, 210/756, 210/169, 210/198.1, 210/758, 423/513
• US Class Current: 210/754
• 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 25/26 in coated particulate form
• CPC Class Codes: A01N 25/34 Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group
• CPC Class Codes: A01N 59/00 Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
• CPC Class Codes: A01N 59/02 Sulfur; Selenium; Tellurium; Compounds thereof
• CPC Class Codes: A01N 59/06 Aluminium; Calcium; Magnesium; Compounds thereof
• CPC Class Codes: C02F 1/722 Oxidation by peroxides
• CPC Class Codes: C02F 1/76 with halogens or compounds of halogens C02F1/4674 takes precedence
• CPC Class Codes: C02F 1/766 by means of halogens other than chlorine or of halogenated compounds containing halogen other than chlorine
• CPC Class Codes: C02F 2103/42 from bathing facilities, e.g. swimming pools
• CPC Class Codes: C02F 2303/04 Disinfection

Abstract

A product including potassium monopersulfate and a halogen is presented. The product is useful for treatment of aquatic facilities such as swimming pools. While it was known that using a combination of potassium monopersulfate and halogen is effective for sanitizing water, a product that includes both components could not be made because of the incompatibility between the two components. The product overcomes the incompatibility by use of a barrier film between the two components. The barrier film, which includes one or more of inorganic salt, silicate, borosilicate, and organic polymer, is coated onto one of the components prior to being combined with the second component. The product may be extruded and molded into a desired shape and added to the water to be treated, as needed.

Claims

1. A water treatment composition for use while mammals are present, comprising:

a potassium monopersulfate component including a triple salt of the formula (KHSO₅)_x(KHSO4)_y(K₂SO4)_z, wherein x+y+z=1, wherein said triple salt contains a K₂S₂O₈ byproduct and the concentration of said K₂S₂O₈ byproduct is less than 0.5 percent (%) by weight;

a halogen component including a halogen donor compound selected from chlorine and bromine; and

a barrier film, wherein the barrier turn includes an inorganic salt, silicate, borosilicate, an organic polymer, or a combination thereof.

2. The water treatment composition of claim 1, wherein the potassium monopersulfate component is about 4 to about 70.8 wt. % of the water treatment composition.

3. The water treatment composition of claim 1, wherein the halogen component is about 29 to about 95.8 wt. % of the water treatment composition.

4. The water treatment composition of claim 1, wherein the barrier film is about 0.2 to about 10 wt. % of the water treatment composition.

5. The water treatment composition of claim 1, wherein the potassium monopersulfate component is about 4 to about 70.8 wt. % of the water treatment composition, the halogen donor is about 29 to about 95.8 wt. % of the water treatment composition, and the barrier film is about 0.2 to about 10 wt. % of the water treatment composition.

6. The water treatment composition of claim 1, wherein x=0.42–

0.64, y=0.15–

0.40, and z=0.15–

0.40.

7. The water treatment composition of claim 1, wherein x=0.48–

0.64, y=0.15–

0.37, and z=0.15–

0.37.

8. The water treatment composition of claim 1, wherein the potassium monopersulfate component comprises:

about 43 to about 76 wt. % KHSO₅;

less than about 0.5 wt. % of K₂S₂O₈; and

about 0.0 to abort 10 wt. % of alkali magnesium salt.

9. The water treatment composition of claim 7, wherein the fraction of K₂S₂O₈ is less than about 0.2 wt. %.

10. The water treatment composition of claim 8, wherein the alkali magnesium salt comprises one or more of Mg(OH)₂, MgCO₃, Mg(HCO3)₂, MgO, (MgCO₃)4-Mg(OH)₂-5H₂O, CaMg(CO₃)₂, MgO—

CaO, Ca(OH)₂—

MgO or combinations thereof.

11. The water treatment composition of claim 1, wherein the halogen donor comprises one or more of calcium hypochlorite, trichloroisocyanurate, dichloroisocyanurate, lithium hypochlorite, dibromo-dimethylhydantoin, bromo-chloro-dimethylhydantoin, and a combination thereof.

12. The water treatment composition of claim 1, wherein the inorganic salt comprises sodium;

carbonate, bicarbonate, hydroxide, oxide, silicate, borate, potassium;

carbonate, bicarbonate, hydroxide, oxide, silicate, borate, magnesium;

carbonate, bicarbonate, hydroxide, oxide, silicate, borate, calcium;

carbonate, bicarbonate, hydroxide, oxide, silicate, borate, or a combination thereof.

13. The water treatment composition of claim 1 further comprising one or more of pH buffering agents, coagulant, clarifiers, and algae control agents.

14. The water treatment composition of claim 1, wherein the barrier film is deposited on one or both of the potassium monopersulfate component and the halogen donor.

15. A water treatment composition for use while mammals are present, comprising:

a potassium monopersulfate component including a triple salt of the formula (KHSO₅)_x(KHSO₄)_y(K₂SO₄)_z, wherein x+y+z=1, wherein said triple salt contains a K₂S₂O₈ byproduct and the concentration of said K₂S₂O₈ byproduct is less than 0.5 percent (%) by weight;

a halogen component including a halogen donor compound selected from chlorine and bromine and

a barrier film, wherein the barrier film includes an inorganic silicate, borosilicate, an organic polymer, or a combination thereof, wherein the silicate comprises sodium, potassium, lithium, alkyl silicate, borosilicate, or a combination thereof.

16. A water treatment composition for use while mammals are present, comprising:

a potassium monopersulfate component including a triple salt of the formula (KHSO₅)_x(KHSO4)_y(K₂SO5)_z wherein x+y+z=1, wherein said triple salt contains a K₂S₂O₈ byproduct and the concentration of said K₂S₂O₈ byproduct is less than 0.5 percent (%) by weight;

a halogen component including a halogen donor compound selected from chlorine and bromine; and

a barrier film, wherein the baffler film includes a silicate, a borosilicate, an organic polymer or a combination thereof, wherein the organic polymer comprises chitin, chitosan, polymaleic avid, phosphinocarboxylic acid, carboxylate-sulfonate copolymer, a carboxylate-sulfonate terpolymer, or a combination thereof.

17. A water treatment composition for use while mammals are present, comprising:

a potassium monopersulfate component including a triple salt of the formula (KHSO₅)_x(KHSO₄)_y(K₂SO₅)_z wherein x+y+z=1;

a halogen component including a halogen donor compound selected from chlorine and bromine; and

a barrier film, wherein the baiter film is an organic polymer comprising a carboxylate-sulfonate copolymer or a carboxylate-sulfonate copolymer, wherein the carboxylate component of the carboxylate-sulfonate copolymer or the carboxylate-sulfonate terpolymer is derived from either polyacrylic acid, polymethacrylic acid or polymaleic acid.

18. The water treatment composition of claim 17, wherein the terpolymer incorporates a nonionic component such as (meth)acrylamide, substituted (meth)acrylamide, vinyl alcohol, allyl alcohol, vinyl esters, an ester of vinyl or allyl alcohol, styrene, isobutylene or diisobutylene.

19. A water treatment composition for use while mammals are present, comprising:

a potassium monopersulfate component including a triple salt of the formula (KHSO₅)_x(KHSO₄)_y(K₂SO₅)_z wherein x+y+z=1;

a halogen component including a halogen donor compound selected from chlorine and bromine; and

a barrier film, wherein the barrier film is an organic polymer comprising a carboxylate-sulfonate copolymer or a carboxylate-sulfonate copolymer, wherein the sulfonate portion of the carboxylate-sulfonate copolymer or the carboxylate-sulfonate terpolymer is derived from an aliphatic or aromatic compound.

20. The water treatment composition of claim 19, wherein the aliphatic compound comprises methacrylamido methyl propane sulfonic acid.

21. The water treatment composition of claim 19, wherein the aromatic compound comprises styrene sulfonic acid.

22. A method of combining potassium monopersulfate and a halogen donor compound selected from chlorine and bromine into a stable product for use while mammals are present, the method comprising:

coating the potassium monopersulfate with one or more of inorganic salt, silicate, borosilicate, and organic polymer; and

adding the halogen donor compound to the coated potassium monopersulfate to form a coagulated product, wherein said potassium monopersulfate component includes a triple salt of the formula (KHSO₅)_x(KHSO₄)_y(K_zSO₄)_z, wherein x+y+z=1, and said triple salt contains a K₂S₂O₈ byproduct at a concentration of less than 0.5 percent (%) by weight.

23. A method of preparing a water treatment composition for use while mammals are present, the method comprising:

providing a potassium monopersulfate component;

combining the potassium monopersulfate component with a halogen donor compound selected from chlorine and bromine and a barrier flint, wherein the barrier film includes an inorganic salt, silicate, borosilicate, an organic polymer, or a combination thereof, and said potassium monopersulfate component includes a triple salt of the formula (KHSO₅)_x(KHSO₄)_y(K_zSO₄)_z, wherein x+y+z=1, and said triple salt contains a K₂S₂O₈ byproduct at a concentration of less than 0.5 percent (%) by weight.

24. The method of claim 23 further comprising combining the potassium monopersulfate component wit the halogen donor and the barrier film such that the potassium monopersulfate component comprises about 4 to about 70.8 wt. % of the water treatment composition.

25. The method of claim 23 further comprising combining the potassium monopersulfate component with the halogen donor and the barrier film such that the halogen donor comprises about 29 to about 95.8 wt. % of the water treatment composition.

26. The method of claim 23 further comprising combining the potassium monopersulfate component with the halogen donor and the hairier film such that the barrier film comprises about 0.2 to about 10 wt. % of the water treatment composition.

27. The method of claim 23 further comprising combining the potassium monopersulfate component with the halogen donor and the barrier film such that the potassium monopersulfate component comprises about 4 to about 70.8 wt. % of the water treatment composition, the halogen donor comprises about 29 to about 95.8 wt. % of the water treatment composition, and the barrier film comprises about 0.2 to about 10 wt. % of the water treatment composition.

28. The method of claim 23, wherein preparing the potassium monopersulfate component comprises preparing a composition that is about 43 to about 76 wt. % KHSO5, and about 0.0 to about 10 wt. % of alkali magnesium salt.

29. The method of claim 28, wherein preparing the potassium monopersulfate component comprises preparing a composition that is about 43 to about 76 wt. % KHSO₅, less than about 0.2 wt. % of K₂S₂O₈, and about 0.0 to about 10 wt. % of alkali magnesium salt.

30. The method of claim 28, wherein the alkali magnesium salt comprises one or more of Mg(OH)₂, MgCO₃, Mg(HCO₃)₂, MgO, (MgCO₃)4-Mg(OH)₂-5H₂O, CaMg(CO₃)₂ MgO—

CaO, Ca(OH)₂—

MgO or combinations thereof.

31. The method of claim 23, wherein the halogen donor comprises one or more of calcium hypochlorite, trichloroisocyanurate, dichloroisocyanurate, lithium hypochlorite, dibromo-dimethylhydantoin, bromo-chloro-dimethylhydantoin, and a combination thereof.

32. The method of claim 23, wherein the inorganic salt comprises sodium;

carbonate;

bicarbonate, hydroxide, oxide, silicate, borate, potassium carbonate, bicarbonate, hydroxide, oxide, silicate, borate, magnesium;

carbonate, bicarbonate, hydroxide, oxide, silicate, borate, calcium;

carbonate, bicarbonate, hydroxide, oxide, silicate, borate, or a combination thereof.

33. The method of claim 23 further comprising depositing the barrier film on one or both of the potassium monopersulfate component and the halogen donor.

34. The method of claim 23 further comprising shaping the combination of potassium monopersulfate component, the halogen donor, and the barrier film into a solid product of preselected dimensions by using one or more of spray gaining, extruding, and molding.

35. The method of claim 23 further comprising adding one or more of pH buffering agents, coagulants, clarifiers, and algae control agents to the combination of potassium monopersulfate component the halogen donor, and the barrier film.

36. A method of preparing a water treatment composition for use while mammals are present, the method comprising:

providing a potassium monopersulfate component;

combining the potassium monopersulfate component with a halogen donor selected from chlorine and bromine and a barrier film, wherein the barrier film includes an inorganic salt silicate, borosilicate, an organic polymer, or a combination thereof wherein the potassium monopersulfate component and the halogen donor are combined such that a weight ratio of the halogen donor to the potassium monopersulfate component is between about 0.05 to about 20.

37. A method of combining potassium monopersulfate and a halogen donor selected from chlorine and bromine into a stable product for use while mammals are present, the method comprising:

coating the potassium monopersulfate with one or more of inorganic salt, silicate, borosilicate, and organic polymer, wherein the silicate comprises sodium, potassium, lithium, alkyl silicate, borosilicate, or a combination thereof; and

adding the halogen donor to the coated potassium monopersulfate to form a coagulated product, wherein said potassium monopersulfate component includes a triple salt of the formula (KHSO₅)_x(KHSO₄)_y(K_zSO₄)_z, wherein x+y+z=1, and said triple salt contains a K₂S₂O₈ byproduct at a concentration of less than 0.5 percent (%) by weight.

38. A method of preparing a water treatment composition for use while mammals are present the method comprising:

providing a potassium monopersulfate component;

combining the potassium monopersulfate component with a halogen donor compound selected from chlorine and bromine and a barrier film wherein the barrier film includes an inorganic salt, silicate, borosilicate, an organic polymer, or a combination thereof, wherein the organic polymer comprises chitin, chitosan, polymaleic acid, phosphinocarboxylic acid, carboxylate-sulfonate copolymer, a carboxylate-sulfonate terpolymer, or a combination thereof.

39. The method of claim 38, wherein the carboxylate component of the carboxylate-sulfonate copolymer or the carboxylate-sulfonate terpolymer is derived from either polyacrylic acid, polymethacrylic acid or polymaleic acid.

40. The method of claim 38, wherein the sulfonate portion of the carboxylate-sulfonate copolymer or the carboxylate-sulfonate terpolymer is derived from an aliphatic or aromatic compound.

41. The method of claim 40, wherein the aliphatic compound comprises methacrylamido methyl propane sulfonic acid.

42. The method of claim 40, wherein the aromatic compound comprises styrene sulfonic acid.

43. The method of claim 38, wherein the terpolymer incorporates a nonionic component such as (meth)acrylamide, substituted (meth)acrylamide, vinyl alcohol, allyl alcohol, vinyl esters, an ester of vinyl or allyl alcohol, styrene, isobutylene or diisobutylene.

44. A method of treating water, comprising:

obtaining a solid product containing potassium monopersulfate and a halogen donor compound selected from chlorine and bromine; and

periodically adding the mixture to a body of water while mammals are present.

45. The method of claim 44 further comprising dissolving the solid product in water prior to adding.

46. A composition for combining potassium monopersulfate and a halogen donor compound selected from chlorine and bromine, the composition comprising one or more of an inorganic salt, a silicate, a borosilicate, and an organic polymer, wherein said potassium monopersulfate component includes a triple salt of the formula (KHSO₅)_x(KHSO₄)_y(K_zSO₄)_z, wherein x+y+z=1, and said triple salt contains a K₂S₂O₈ byproduct at a concentration of less than 0.5 percent (%) by weight.