Disinfection solution with two-part formulation

Patent metadata

Field	Value
Publication number	US-2023116039-A1
Application number	US-202117914230-A
Country	US
Kind code	A1
Filing date	Apr 14, 2021
Priority date	Apr 22, 2020
Publication date	Apr 13, 2023
Grant date	—

Abstract

A two-part formulation for creating a decontamination solution may comprise a first part comprising a peracid (e.g., peracetic acid (PAA), acetic acid, hydrogen peroxide) and a second part comprising a pH adjuster (e.g., a pH modifier, such as ethanolamine or disodium phosphate), in which the first part and the second part are maintained separately from each other. To assist in increasing the stability of the solution after the first part and the second part are mixed with water, including hard water, the first part and the second part should lack any chelants that could reduce the stability of the solution. Stability reducing chelants may include ethylenediaminetetraacetic acid (EDTA), tetrasodium EDTA, methylglycinediacetic acid trisodium salt, diethylenetriaminepentaacetic acid pentasodium salt, sodium citrate, nitrilotriacetic acid trisodium salt, and glutamic acid diacetic acid tetrasodium salt.

First claim

1 . A two-part formulation, comprising:
a first part comprising a peracid; and a second part comprising a pH adjuster, in which the first part and the second part are maintained separately from each other, and in which the second part lacks any stability reducing chelants.

2 . The two-part formulation of claim 1 , in which the stability reducing chelants include ethylenediaminetetraacetic acid (EDTA), tetrasodium EDTA, methylglycinediacetic acid trisodium salt, diethylenetriaminepentaacetic acid pentasodium salt, sodium citrate, nitrilotriacetic acid trisodium salt, and glutamic acid diacetic acid tetrasodium salt.

3 . The two-part formulation of claim 1 or 2 , in which the first part comprises an oxidation-resistant stabilizer.

4 . The two-part formulation of claim 3 , in which the oxidation-resistant stabilizer comprises an oxidation-resistant chelant.

5 . The two-part formulation of claim 4 , in which the oxidation-resistant chelant comprises an oxidation-resistant chelant of the phosphonate family.

6 . The two-part formulation of claim 4 , in which the oxidation-resistant chelant is selected from the group consisting of amino trimethylene phosphonic acid, diethylene triamine penta (methylene phosphonic acid), 2-hydroxyethyl (amino) bis(methylene phosphonic acid), ethylene diamine tetra(methylene phosphonic acid), and 1-hydroxyethylidene-1, 1-diphosphonic acid.

7 . The two-part formulation of claim 5 , in which the peracid comprises peracetic acid (PAA).

8 . The two-part formulation of claim 5 , in which the pH adjuster comprises a pH modifier.

9 . (canceled)

10 . (canceled)

11 . (canceled)

12 . (canceled)

13 . (canceled)

14 . (canceled)

15 . (canceled)

16 . A ready-to-use decontamination solution, comprising:
a peracid; a pH adjuster; and water, in which the ready-to-use decontamination solution lacks any stability reducing chelants.

17 . The ready-to-use decontamination solution of claim 16 , in which the stability reducing chelants include ethylenediaminetetraacetic acid (EDTA), tetrasodium EDTA, methylglycinediacetic acid trisodium salt, diethylenetriaminepentaacetic acid pentasodium salt, sodium citrate, nitrilotriacetic acid trisodium salt, and glutamic acid diacetic acid tetrasodium salt.

18 . The ready-to-use decontamination solution of claim 17 , further comprising an oxidation-resistant stabilizer.

19 . The ready-to-use decontamination solution of claim 18 , in which the oxidation-resistant stabilizer comprises an oxidation-resistant chelant.

20 . The ready-to-use decontamination solution of claim 19 , in which the oxidation-resistant chelant comprises an oxidation-resistant chelant from the phosphonate family.

21 . The ready-to-use decontamination solution of claim 19 , in which the oxidation-resistant chelant is selected from the group consisting of amino trimethylene phosphonic acid, diethylene triamine penta (methylene phosphonic acid), 2-hydroxyethyl (amino) bis(methylene phosphonic acid), ethylene diamine tetra(methylene phosphonic acid), and 1-hydroxyethylidene-1, 1-diphosphonic acid).

22 . The ready-to-use decontamination solution of claim 20 , in which the peracid comprises peracetic acid (PAA).

23 . The ready-to-use decontamination solution of claim 22 , in which the ready-to-use decontamination solution includes the PAA at a PAA concentration of between about 0.10% and about 0.50%, and in which a property of the ready-to-use decontamination solution is that the PAA concentration decreases by less than about 30% when maintained at about 56° C. for about one hour.

24 . (canceled)

25 . (canceled)

26 . The ready-to-use decontamination solution of claim 23 , in which the property of the ready-to-use decontamination solution is that the PAA concentration decreases by less than about 15% when maintained at about 56° C. for about one hour.

27 . The ready-to-use decontamination solution of claim 26 , in which the property of the ready-to-use decontamination solution is that the PAA concentration decreases by about 5% when maintained at about 56° C. for about one hour.

28 . (canceled)

29 . (canceled)

30 . (canceled)

31 . (canceled)

32 . The ready-to-use decontamination solution of claim 23 , in which the water comprises hard water having a metal-ion concentration of between about 100 ppm and 400 ppm.

33 . (canceled)

34 . (canceled)

35 . A method of preparing a decontamination solution, comprising:
receiving a two-part formulation comprising
a first part comprising a peracid, and
a second part comprising a pH adjuster,
in which the first part and the second part are maintained separately from each other, and
in which the second part lacks any stability reducing chelants.

36 . The method of claim 35 , in which the stability reducing chelants include ethylenediaminetetraacetic acid (EDTA), tetrasodium EDTA, methylglycinediacetic acid trisodium salt, diethylenetriaminepentaacetic acid pentasodium salt, sodium citrate, nitrilotriacetic acid trisodium salt, and glutamic acid diacetic acid tetrasodium salt.

37 . The method of claim 36 , in which the first part comprises an oxidation-resistant stabilizer.

38 . The method of claim 37 , in which the oxidation resistant stabilizer comprises and oxidation-resistant chelant.

39 . The method of claim 38 , in which the oxidation-resistant chelant comprises an oxidation-resistant chelant from the phosphonate family.

40 . The method of claim 38 , in which the oxidation-resistant chelant is selected from the group consisting of amino trimethylene phosphonic acid, diethylene triamine penta (methylene phosphonic acid), 2-hydroxyethyl (amino) bis(methylene phosphonic acid), ethylene diamine tetra(methylene phosphonic acid), and 1-hydroxyethylidene-1, 1-diphosphonic acid.

41 . The method of claim 39 , in which the peracid comprises peracetic acid (PAA).

42 . The method of claim 41 , in which the ready-to-use decontamination solution includes the PAA at a PAA concentration of between about 0.10% and about 0.50%, and in which a property of the ready-to-use decontamination is that the PAA concentration decreases by less than about 30% when maintained at about 56° C. for about one hour.

43 . (canceled)

44 . (canceled)

45 . The method of claim 42 , in which the property of the ready-to-use decontamination is that the PAA concentration decreases by less than about 15% when maintained at about 56° C. for about one hour.

46 . (canceled)

47 . (canceled)

48 . (canceled)

49 . (canceled)

50 . (canceled)

51 . (canceled)

52 . (canceled)

53 . The method of claim 42 , further comprising combining the first part and the second part with a volume of water to create the ready-to-use decontamination solution.

54 . (canceled)

55 . (canceled)

56 . (canceled)

57 .

Assignees

• Asp Global Mfg Gmbh

Inventors

• Omidbakhsh Navid
• Farvid Shokouh Sadat

Classifications

• A01N25/02

  containing liquids as carriers, diluents or solvents · CPC title

• A01N25/22

  containing ingredients stabilising the active ingredients · CPC title

• A61L2/186

  Peroxide solutions · CPC title

• A01N37/16 Primary

  containing the group [IMAGE cpc-sch-A01N-0934.gif]; Thio analogues thereof · CPC title

• A01P1/00

  Disinfectants; Antimicrobial compounds or mixtures thereof · CPC title