Medium chain peroxycarboxylic acid compositions

• US 9,491,965 B2
• Filed: 05/05/2014
• Issued: 11/15/2016
• Est. Priority Date: 01/09/2004
• Status: Expired due to Term

• Current Assignee: Ecolab USA Incorporated (Ecolab, Inc.)
• Original Assignee: Ecolab USA Incorporated (Ecolab, Inc.)
• Inventors: Man, Victor F., Magnuson, Joshua P., Lentsch, Steven E.
• Primary Examiner(s): Arnold, Ernst V
• Application Number:
  US14/270,036
• Publication Number:
  US 20140322407A1
• Time in Patent Office: 925 Days
• US Class Current: 1/1
• 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 25/02 containing liquids as carriers, diluents or solvents
• CPC Class Codes: A01N 25/04 Dispersions, emulsions, suspoemulsions, suspension concentrates or gels foams A01N25/16
• CPC Class Codes: A01N 25/16 Foams
• CPC Class Codes: A01N 25/22 containing ingredients stabilising the active ingredients
• CPC Class Codes: A01N 25/30 characterised by the surfactants
• CPC Class Codes: A01N 37/00 Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing cyclopropane carboxylic acids or derivatives thereof, e.g. cyclopropane carboxylic acid nitriles, A01N53/00
• CPC Class Codes: A01N 37/02 Saturated carboxylic acids or thio analogues thereof; Derivatives thereof
• CPC Class Codes: A01N 37/16 containing the group; Thio analogues thereof
• CPC Class Codes: A23L 3/34635 Antibiotics
• CPC Class Codes: A23L 3/3508 containing carboxyl groups
• CPC Class Codes: A23L 3/358 Inorganic compounds
• CPC Class Codes: A61K 2300/00 Mixtures or combinations of active ingredients, wherein at least one active ingredient is fully defined in groups A61K31/00 - A61K41/00
• CPC Class Codes: A61K 31/19 Carboxylic acids, e.g. valproic acid salicylic acid A61K31/60
• CPC Class Codes: A61K 31/327 Peroxy compounds, e.g. hydroperoxides, peroxides, peroxyacids
• CPC Class Codes: A61K 45/06 Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
• CPC Class Codes: A61L 2/18 Liquid substances or solutions comprising solids or dissolved gases
• CPC Class Codes: A61L 2/183 Ozone dissolved in a liquid
• CPC Class Codes: A61L 2/186 Peroxide solutions
• CPC Class Codes: A61L 2/22 Phase substances, e.g. smokes, aerosols or sprayed or atomised substances
• CPC Class Codes: A61L 2/23 : Solid substances, e.g. granules, powders, blocks, tablets
• CPC Class Codes: A61L 2/235 : cellular, porous or foamed
• CPC Class Codes: A61L 2202/18 : Aseptic storing means
• CPC Class Codes: A61L 2202/23 : Containers, e.g. vials, bottles, syringes, mail
• CPC Class Codes: A61L 2202/24 : Medical instruments, e.g. endoscopes, catheters, sharps

Abstract

The present invention relates to compositions including medium chain peroxycarboxylic acid, methods for making these compositions, and methods for reducing the population of a microorganism. The compositions can include advantageously high levels of the medium chain peroxycarboxylic acid, can be readily made, and/or can exhibit reduced odor.

Claims

1. A composition comprising:

about 0.5 to about 5 wt-% peroxyoctanoic acid;

about 1 to about 10 wt-% octanoic acid;

about 5 to about 50 wt-% water;

about 7 to about 35 wt-% hydrogen peroxide

about 0.5 to about 10 wt-% sequestrant; and

about 1 to about 20 wt-% surfactant,

wherein the composition has a pH of about 3 or less, and wherein the composition is free of short-chain carboxylic acids having 4 or fewer carbon atoms.

2. The composition of claim 1, consisting of at least about 2 parts by weight of peroxyoctanoic acid for each 7 parts by weight of octanoic acid.

3. The composition of claim 1, wherein the composition has a pH of 1 or less.

4. The composition of claim 1 further comprising about 10 to about 40 wt-% inorganic acid.

5. The composition of claim 4, wherein the inorganic acid is phosphoric acid.

6. The composition of claim 1, wherein the sequestrant is 1-hydroxy ethylidene-1,1-diphosphonic acid (HEDP).

7. The composition of claim 1 further comprising about 30 to about 40 wt-% inorganic acid.

8. The composition of claim 1, wherein the composition comprises from 10 to 25 wt-% hydrogen peroxide.

9. A method for sanitizing an article comprising:

a) preparing a use solution by diluting a concentrate composition with an aqueous diluent where the use solution comprises about 0.5 to about 4 wt-% of the concentrate composition, the concentrate composition comprising

about 0.5 to about 5 wt-% peroxyoctanoic acid;

about 1 to about 10 wt-% octanoic acid;

about 5 to about 50 wt-% water;

about 10 to about 35 wt-% hydrogen peroxide

about 0.5 to about 10 wt-% sequestrant;

about 1 to about 20 wt-% surfactant, and

about 10 to about 40 wt-% inorganic acid;

wherein the composition is free of short-chain carboxylic acids having 4 or fewer carbon atoms;

b) contacting the use solution with the article;

c) allowing sufficient contact time to sanitize the article; and

d) optionally rinsing the article.

10. The method of claim 9, wherein the article comprises equipment and wherein the method comprises a clean-in-place (CIP) procedure.

11. The method of claim 9, wherein the use solution is applied at a temperature of about 4°

C. to about 60°

C., and wherein the composition remains in solution at the temperature.

12. The method of claim 11, wherein the use solution contacts the article for the duration of a contact time, and wherein contact time is between about 30 s to about 120 s.

13. The method of claim 9, wherein the concentrate composition further comprises a foaming agent.

14. The method of claim 13, wherein the foaming agent is selected from alkyl benzene sulfonate, secondary alkane sulfonate, alkylated diphenyl oxide disulfonate, alkyl ether sulfate, sodium lauryl sulfate, and a combination thereof.

15. The method of claim 14, wherein the foaming agent comprises alkyl benzene sulfonate and wherein the alkyl benzene sulfonate forms a microemulsion, a viscoelastic gel, or viscoelastic liquid.

16. The method of claim 9, wherein the article comprises food.

17. The method of claim 16, wherein the use composition is applied to the article by spraying or by immersing the article in the use solution.

18. The method of claim 9, wherein the method comprises an aseptic packaging procedure.

19. The method of claim 18, wherein the use solution is applied at a temperature of about 25°

C. to about 70°

C.

20. The method of claim 18, wherein the use solution contacts the article for the duration of a contact time, and wherein contact time is between about 5 s to about 120 s.