Medium chain peroxycarboxylic acid compositions

• US 7,771,737 B2
• Filed: 01/09/2004
• Issued: 08/10/2010
• Est. Priority Date: 01/09/2004
• Status: Active Grant

• Current Assignee: Ecolab USA Incorporated (Ecolab, Inc.)
• Original Assignee: Ecolab, Inc.
• Inventors: Lentsch, Steven Eugene, Magnuson, Joshua Paul, Man, Victor Fuk-Pong
• Primary Examiner(s): Arnold; Ernst V
• Application Number:
  US10/754,426
• Publication Number:
  US 20050152991A1
• Time in Patent Office: 2,405 Days
• Field of Search: 514/557, 514/558, 424/405, 424/455, 424/601, 424/613, 424/616
• US Class Current: 424/405
• 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.% medium chain peroxycarboxylic acid;

about 1 to about 10 wt. % medium chain carboxylic acid;

about 10 to about 80 wt. % water;

about 1 to about 20 wt. % surfactant;

about 2 to about 25 wt. % oxidizing agent;

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

less than 1 wt. % acetic acid;

wherein there are at least 5 parts of oxidizing agent for every part of the medium chain peroxycarboxylic acid.

2. The composition of claim 1, further comprising about 1 to about 5 wt.% sequestrant.

3. The composition of claim 1, wherein the surfactant is an anionic surfactant.

4. The composition of claim 1, wherein the surfactant is present in an amount to form a micro emulsion with droplets of a diameter of 100 nanometers or less.

5. The composition of claim 1, wherein the composition is free of short chain carboxylic acid, short chain peroxycarboxylic acid, and mixtures thereof.

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

7. The composition of claim 1, wherein the inorganic acid is selected from the group consisting of sulfuric acid, phosphoric acid, methane sulfonic acid, nitric acid, and mixtures thereof.

8. The composition of claim 2, wherein the sequestrant is HEDP.

9. The composition of claim 1, wherein after 1 week at 60°

C. the concentration of medium chain peroxycarboxylic acid is greater than about 80% of the level of the first day of storage.

10. The composition of claim 1, wherein there are at least 6 parts of oxidizing agent for every part of medium chain peroxycarboxylic acid.

11. The composition of claim 1, wherein the medium chain peroxycarboxylic acid is peroxyoctanoic acid and the medium chain carboxylic acid is octanoic acid.