Medium chain peroxycarboxylic acid compositions

• US 20050192197A1
• Filed: 01/04/2005
• Published: 09/01/2005
• Est. Priority Date: 01/09/2004
• Status: Active Grant

• Current Assignee: Ecolab USA Incorporated (Ecolab, Inc.)
• Original Assignee: Ecolab, Inc.
• Inventors: Man, Victor Fuk-Pong, Lentsch, Steven Eugene, Magnuson, Joshua Paul
• Granted Patent: US 7,569,232 B2
• Time in Patent Office: Days
• US Class Current: 510/375
• 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 97 wt-% water;

about 1 to about 20 wt-% anionic surfactant;

about 5 to about 10 wt-% oxidizing agent;

about 15 to about 35 wt-% inorganic acid; and

about 1 to about 5 wt-% sequestrant;

the composition comprising a microemulsion.

2. The composition of claim 1, comprising:

about 15 to about 80 wt-% water; and

about 3 to about 20 wt-% anionic surfactant.

3. The composition of claim 2, comprising:

about 30 to about 70 wt-% water; and

about 4 to about 20 wt-% anionic surfactant.

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

5. The composition of claim 1, further comprising at least one of short chain carboxylic acid and short chain peroxycarboxylic acid;

the composition comprising at least about 1 part by weight of peroxyoctanoic acid for each 8 parts by weight of short chain carboxylic acid, short chain peroxycarboxylic acid, or mixture thereof.

6. The composition of claim 1, wherein the oxidizing agent comprises hydrogen peroxide.

7. The composition of claim 1, wherein the inorganic acid comprises at least one of sulfuric acid, phosphoric acid, methanesulfonic acid, and nitric acid.

8. The composition of claim 1, wherein the sequestrant comprises HEDP.

9. (canceled)

10. A composition comprising:

about 0.0005 to about 5 wt-% peroxyoctanoic acid;

about 0.001 to about 10 wt-% octanoic acid;

about 5 to about 99.99 wt-% water;

about 0.001 to about 60 wt-% at least one of polyalkylene oxide, monoalkyl ether of polyalkylene oxide, dialkyl ether of polyalkylene oxide, nonionic surfactant, and anionic surfactant;

about 0.002 to about 10 wt-% oxidizing agent;

about 0.001 to about 30 wt-% inorganic acid; and

about 0.001 to about 5 wt-% sequestrant;

the composition comprising at least about 2 parts by weight of peroxyoctanoic acid for each 7 parts by weight of octanoic acid.

11. The composition of claim 10, comprising:

about 0.5 to about 5 wt-% peroxyoctanoic acid;

about 1 to about 10 wt-% octanoic acid;

about 10 to about 90 wt-% water; and

about 2 to about 20 wt-% at least one of polyethylene glycol, monomethyl ether of polyethyleneglycol, dimethyl ether of polyethyleneglycol, alkyl sulfonate, alkyl benzene sulfonic acid, secondary alkane sulfonate, alkylated diphenyl oxide disulfonate, alkyl ether sulfate, alcohol alkoxylate, and amine oxide.

12. The composition of claim 10, comprising:

about 2 to about 500 ppm peroxyoctanoic acid;

about 5 to about 2000 ppm octanoic acid;

about 95 to about 99.99 wt-% water; and

about 2 to about 23,000 ppm at least one of polyethylene glycol, monomethyl ether of polyethyleneglycol, dimethyl ether of polyethyleneglycol, alkyl sulfonate, alkyl benzene sulfonic acid, secondary alkane sulfonate, alkylated diphenyl oxide disulfonate, alkyl ether sulfate, alcohol alkoxylate, and amine oxide.

13. The composition of claim 10, comprising about 2 parts by weight of peroxyoctanoic acid for each 3 parts by weight of octanoic acid.

14. The composition of claim 10, further comprising at least one of short chain carboxylic acid and short chain peroxycarboxylic acid;

the composition comprising at least about 1 part by weight of peroxyoctanoic acid for each 8 parts by weight of short chain carboxylic acid, short chain peroxycarboxylic acid, or mixture thereof.

15. The composition of claim 10, wherein the oxidizing agent comprises hydrogen peroxide.

16. The composition of claim 10, wherein the inorganic acid comprises at least one of sulfuric acid, phosphoric acid, methanesulfonic acid, and nitric acid.

17. The composition of claim 10, wherein the sequestrant comprises HEDP.

18. The composition of claim 10, comprising at least one of alkyl sulfonate, linear alkyl benzene sulfonic acid, secondary alkane sulfonate, alkylated diphenyl oxide disulfonate, and alkyl ether sulfate;

wherein the composition comprises a microemulsion.

19-29. -29. (canceled)

30. A method of making a medium chain peroxycarboxylic acid composition, the method comprising:

combining;

about 1 to about 10 wt-% octanoic acid;

about 0 to about 98 wt-% water;

about 2 to about 20 wt-% oxidizing agent; and

about 1 to about 80 wt-% at least one of polyalkylene oxide, monoalkyl ether of polyalkylene oxide, dialkyl ether of polyalkylene oxide, nonionic surfactant, and anionic surfactant;

converting at least 20% of the octanoic acid to peroxyoctanoic acid in about 24 or fewer hours.

31. The method of claim 30, comprising converting at least about 35% of the octanoic acid to peroxyoctanoic acid in about 6 or fewer hours.

32. The method of claim 30, wherein combining further comprises combining inorganic acid, sequestrant, or mixture thereof.

33-310. -310. (canceled)