Insect repellent composition and method of use
The present invention is concerned with an insect repellent composition and a method of using the same to repel insects over an extended period of time. The compositions of the invention include natural insect repellents and can provide a prolongation of complete protection times to a 12 hour minimum thereby enabling a once daily dosage regime if required.
1. An insect repellent composition which provides a complete protection time of at least 8 hours, the composition comprising p-methane-3,8-diol in an amount of at least 20% by weight of the composition, vanillin in an amount of 5 to 15% by weight of said composition, an antioxidant that prevents discoloration of said vanillin when said composition is stored at 54° C. for 14 days and a delivery vehicle.
2. An insect repellent composition according to claim 1 comprising p-methane-3,8-diol as the sole insect repellent, vanillin and a delivery vehicle.
3. An insect repellent composition comprising p-methane-3,8-diol as the sole insect repellent in an amount of at least 20% by weight of the composition, vanillin and a delivery vehicle, wherein said insect repellent composition provides a complete protection time of at least 8 hours.
4. An insect repellent composition according to claim 3 comprising p-methane-3,8-diol, vanillin and a delivery vehicle, for once or bi-daily administration.
5. An insect repellent composition according to claim 1 , for the prevention of a disease state selected from the group consisting of; disease states caused by Aedes Aegypti , Dengue fever, Yellow fever and the Zika virus.
6. An insect repellent composition according to claim 3 , for the prevention of a Disease state selected from the group consisting of: disease states caused by Aedes Aegypti , Dengue fever, Yellow fever and the Zika virus.
7. An insect repellent composition according to claim 3 comprising p-methane-3,8-diol, vanillin and a delivery vehicle, for the prevention of a disease state caused by the Culex mosquito.
8. An insect repellent composition according to claim 3 comprising p-methane-3,8-diol, vanillin, and a delivery vehicle, for repelling midges, including the Scottish Highland midge (Meanbh-chuileag).
9. An insect repellent composition according to claim 3 , which further comprises an antioxidant that prevents discoloration of said vanillin when said composition is stored at 54° C. for 14 days.
10. An insect repellent composition according to claim 1 , wherein said antioxidant comprises sodium bisulphite.
11. An insect repellent composition according to claim 10 , wherein said sodium bisulphite is present in an amount of about 0.5 to about 1.5% weight % of the composition.
12. An insect repellent composition according to claim 1 , wherein p-methane-3,8-diol is present as the sole insect repellent.
13. An insect repellent composition according to claim 1 , wherein said composition provides a complete protection time of at least 10 hours.
14. An insect repellent composition according to claim 1 , wherein said composition provides a complete protection time of at least 12 hours.
15. An insect repellent composition according to claim 1 , for once or bi-daily administration.
16. An insect repellent composition according to claim 1 , for the prevention of a disease state selected from the group consisting of: disease states caused by the Culex mosquito, and West Nile virus.
17. An insect repellent composition according to claim 1 , for repelling midges, including Scottish Highland midge (Meanbh-chuileag).
18. An insect repellent composition according to claim 1 , wherein said vanillin is present in an amount of 10-% by weight of said composition.
19. An insect repellent composition according to claim 1 , which said p-methane-3,8-diol is present in an amount of at least 25% by weight of said composition.
20. An insect repellent composition according to claim 1 , which said p-methane-3,8-diol is present in an amount of at least 30% by weight of said composition.
21. An insect repellent composition according to claim 1 , wherein said delivery vehicle comprises isopropyl alcohol.
22. An insect repellent composition according to claim 1 that comprises p-methane-3,8-diol, vanillin, sodium bisulfite, water and isopropyl alcohol.
23. An insect repellent composition according to claim 22 , wherein said isopropyl alcohol is present in an amount of about 40% by weight of said composition.
24. An insect repellent composition according to claim 1 , which is a spray, lotion, gel or roll-on.
25. An article of manufacture, such as a mosquito net or a dermal wipe, that is impregnated with a composition according to claim 1 .
26. A method of preventing a disease state selected from the group consisting of: disease states caused by a biting fly, disease states caused by Aedes Aegypti , Dengue fever, Yellow fever and the Zika virus; of repelling a biting fly, which method comprises administering to the skin of a user a composition according to claim 1 .
27. A method according to claim 26 , for the prevention of a disease state selected from the group consisting of: disease states caused by the Culex mosquito, and West Nile virus.
28. A method according to claim 26 , for repelling midges, including the Scottish Highland midge (Meanbhchuileag).
29. A method of repelling insects comprising administering to the skin of a user a composition according to claim 1 .
30. A method of repelling insects comprising administering to the skin of a user a composition according to claim 3 .