Methods for reducing the population of arthropods with medium chain peroxycarboxylic acid compositions

Patent metadata

Field	Value
Publication number	US-9511161-B2
Application number	US-17648405-A
Country	US
Kind code	B2
Filing date	Jul 6, 2005
Priority date	Jan 9, 2004
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

The present invention relates to methods for reducing the population of (e.g., killing) arthropods employing compositions including medium chain peroxycarboxylic acid, and to the compositions. The methods include applying a medium chain peroxycarboxylic acid composition to an arthropod or a surface or area suspected of housing an arthropod.

First claim

We claim:

1. A method of killing an arthropod comprising:
providing a medium chain peroxycarboxylic acid concentrate composition comprising:
about 0.5 to about 5 wt-% peroxyoctanoic acid;
about 1 to about 10 wt-% octanoic acid;
about 10 to about 80 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;

wherein the composition is substantially free of short chain percarboxylic acids, and the composition comprising a microemulsion, the microemulsion comprising droplets of a diameter of 100 nanometers or less;
preparing a use composition from the medium chain peroxycarboxylic acid concentrate composition comprising diluting about 0.01 to about 4.0 wt % of the concentrate with about 96 to about 99.99 wt % of a diluent; and
contacting an arthropod with the use composition in an amount and time sufficient to kill the arthropod.

2. The method of claim 1 , wherein the medium chain peroxycarboxylic acid composition comprises: about 2 or more parts by weight of medium chain peroxycarboxylic acid for each 7 parts by weight of medium chain carboxylic acid.

3. The method of claim 1 , wherein contacting comprises contacting the arthropod with a foamed composition.

4. The method of claim 1 , wherein contacting comprises contacting the arthropod with a wet spray.

5. The method of claim 1 , wherein contacting comprises contacting the arthropod with an aerosol spray.

6. The method of claim 1 , wherein the arthropod comprises an insect.

7. The method of claim 1 , wherein the arthropod comprises an arachnid.

8. The method of claim 1 , wherein the arthropod comprises a centipede, millipede, or sow bug.

9. The method of claim 1 , wherein the composition comprises a high concentration of medium chain peroxyoctanoic acid and the arthropod is contacted with a low volume of the composition per arthropod.

10. The method of claim 1 , wherein the composition comprises a low concentration of medium chain peroxyoctanoic acid and the arthropod is contacted with a high volume of the composition per arthropod.

11. The method of claim 1 , wherein the arthropod comprises an arthropod egg.

12. The method of claim 1 , wherein the arthropod comprises an arthropod larvae.

13. A method of killing an arthropod egg comprising:
providing a medium chain peroxycarboxylic acid composition comprising:
about 0.5 to about 5 wt-% peroxyoctanoic acid;
about 1 to about 10 wt-% octanoic acid;
about 10 to about 80 wt-% water;
about 1 to about 20 wt-% anionic surfactant;
about 2 to about 30 wt-% oxidizing agent;
about 15 to about 35 wt-% inorganic acid; and
about 1 to about 5 wt-% sequestrant;

wherein the composition is substantially free of short chain percarboxylic acids and comprises a microemulsion, the microemulsion comprising droplets of a diameter of 100 nanometers or less;
preparing a use composition from the medium chain peroxycarboxylic acid composition; and
contacting an arthropod egg with the use composition in an amount and time sufficient to kill the arthropod egg.

14. The method of claim 13 , wherein contacting comprises contacting the arthropod egg with a foamed composition.

15. The method of claim 13 , wherein the arthropod egg comprises a cockroach egg.

16. A method of killing arthropod larva comprising:
providing a medium chain peroxycarboxylic acid composition comprising:
about 0.5 to about 5 wt-% peroxyoctanoic acid;
about 1 to about 10 wt-% octanoic acid;
about 10 to about 80 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;

wherein the composition is substantially free of short chain percarboxylic acids, and comprises a microemulsion, the microemulsion comprising droplets of a diameter of 100 nanometers or less;
preparing a use composition from the medium chain peroxycarboxylic acid composition; and
contacting an arthropod larva with the use composition in an amount and time sufficient to kill the arthropod larva.

17. The method of claim 16 , wherein contacting comprises contacting the arthropod larva with a foamed composition.

Assignees

• Matts Emory H
• Man Victor Fuk-Pong
• Magnuson Joshua P
• Barcay S John
• Tarara James J
• Nelson Thomas D
• Ecolab Usa Inc

Inventors

• Matts Emory H
• Man Victor Fuk-Pong
• Magnuson Joshua P
• Barcay S John
• Tarara James J
• Nelson Thomas D

Classifications

• A61L2/22

  Phase substances, e.g. smokes or aerosols · CPC title

• A61L2/23

  Solid materials, e.g. granules, powders, blocks or tablets · CPC title

• A61L2202/18

  Aseptic storing means · CPC title

• A01N37/16

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

• A61L2/183

  Ozone dissolved in a liquid · CPC title