Spatial insect repellent compositions

Patent metadata

Field	Value
Publication number	US-11832618-B2
Application number	US-202117142600-A
Country	US
Kind code	B2
Filing date	Jan 6, 2021
Priority date	Jan 6, 2021
Publication date	Dec 5, 2023
Grant date	Dec 5, 2023

Abstract

Disclosed herein are spatial insect repellent compositions comprising pyrethrins and about 5% to about 20% by weight p-menthane-3,8-diol.

First claim

We claim:

1. A spatial pest repellent composition, consisting of:
about 0.1% to about 1.0% by weight pyrethrins;
about 5% to about 20% by weight p-menthane-3,8-diol;
isopropyl myristate;
hydrocarbon solvent; and
antioxidant;
wherein at least 80% landing inhibition on a person of Aedes albopictus and Culex quinquefasciatus mosquitos is achieved within 15 minutes of exposure to the vaporized composition;
wherein 24 hours after exposure to the vaporized composition Aedes albopictus and Culex quinquefasciatus mosquitos experience about <10% mortality.

2. The composition of claim 1 , wherein the p-menthane-3,8-diol is about 5% to about 15% by weight.

3. The composition of claim 1 , wherein the isopropyl myristate is about 15-25% by weight.

4. The composition of claim 1 , wherein the hydrocarbon solvent is about 62% to about 70% by weight.

5. The composition of claim 1 , wherein the antioxidant is about 0.5% to about 1.5% by weight.

6. The composition of claim 1 , wherein the hydrocarbon solvent is selected from the group consisting of aliphatic C 9 -C 14 hydrocarbons, alicyclic C 9 -C 14 hydrocarbons, naphtha, petroleum distillate, paraffins, iso-paraffins, isoparaffinic hydrocarbons, cycloparaffins, alkanes, iso-alkanes, cycloalkanes, and any combinations thereof.

7. The composition of claim 1 , wherein the antioxidant is selected from the group consisting of 2,6-di-tert-butyl-4-methylphenol (BHT), 3-tert-butyl-4-hydroxyanisole (BHA), 2,2′-methylene-bis(4-ethyl-6-tert-butylphenol), 2,2′-methylene-bis-(4-methyl-6-tert-butylphenol), 4,4′-butylidene-bis(5-methyl-6-tert-butylphenol), 4,4′-methylene-bis(2-methyl-6-tert-butylphenol), 4,4′-thio-bis(3-methyl-6-tert-butylphenol), 4,4′-methylene-bis(2,6-di-tertbutylphenol), stearyl-β(3,5-di-tert-butyl-4-hydroxyphenol)-propionate, 1,3,5-trimethyl-2,4-6-tris(3,5-di-tert-butyl-4-hydroxybenzylbenzene), 1,1,3-tris(2-methyl-4-hydroxy-5-tert-butyl)-butane, tetrakis [methylene(3,5-di-tert-butyl-4-hydroxycinnimate)]methane, dilauryl thiodipropionate, and distearyl thiodipropionate.

8. A method of repelling an invertebrate pest from a space comprising heating a pest repellent composition using a heating element, wherein the pest repellent composition is the spatial pest repellant composition according to claim 1 , and wherein the pest repellent composition is vaporized into the space and invertebrate pests are repelled therefrom.

9. The method of claim 8 , wherein the heating element is a resistive heating element.

10. The method of claim 8 , wherein the composition further comprises about 62% to about 70% by weight hydrocarbon solvent.

11. The method of claim 8 , wherein the invertebrate pest is a mosquito.

12. The method of claim 11 , wherein the mosquito is selected from the group consisting of Culex quinquefasciatus mosquitos and Aedes albopictus mosquitos.

13. The method of claim 12 , wherein at least 85% landing inhibition on a person of Culex quinquefasciatus mosquitos is achieved within 15 minutes of exposure to the vaporized pest repellent composition.

14. An apparatus, comprising:
a heating element adjacent to a first end of a wick and a reservoir enclosing a second end of the wick, the reservoir comprising, and in contact with the second end of the wick, a spatial pest repellant composition according to claim 1 , wherein upon application of an electric current to the heating element the pest repellent composition is vaporized from the wick.

15. The apparatus of claim 14 , wherein the heating element is a resistive heating element.

Assignees

• Johnson & Son Inc S C

Inventors

• Long Lina
• Kotecki Andrew
• Hunnicutt Joshua M
• Sosa Anthony

Classifications

• A01N65/12 Primary

  Asteraceae or Compositae [Aster or Sunflower family], e.g. daisy, pyrethrum, artichoke, lettuce, sunflower, wormwood or tarragon · CPC title

• A01M1/2061

  using a heat source · CPC title

• A01N31/04

  Oxygen or sulfur attached to an aliphatic side-chain of a carbocyclic ring system · CPC title

• A01N31/06

  Oxygen or sulfur directly attached to a cycloaliphatic ring system · CPC title

• A01N37/02

  Saturated carboxylic acids or thio analogues thereof; Derivatives thereof · CPC title