Formulations containing insect repellent compounds

• US 8,748,477 B2
• Filed: 11/03/2005
• Issued: 06/10/2014
• Est. Priority Date: 11/03/2004
• Status: Active Grant

• Current Assignee: Dupont US Holding, LLC (International Flavors & Fragrances Incorporated)
• Original Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Inventors: Scialdone, Mark A.
• Primary Examiner(s): Schnizer, Richard
• Assistant Examiner(s): Zhang, Yanzhi
• Application Number:
  US11/266,641
• Publication Number:
  US 20060223878A1
• Time in Patent Office: 3,141 Days
• Field of Search: 514/457, 514/918, 514/617, 514/427, 514/456, 424/45, 424/405, 424/401, 424/408, 431/32
• US Class Current: 514/427
• CPC Class Codes: A01N 43/16 with oxygen as the ring hetero atom
• CPC Class Codes: Y02A 50/30 Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change

Abstract

Dihydronepetalactone, a minor natural constituent of the essential oil of catmints (Nepeta spp.) such as Nepeta cataria, has been identified as an effective insect repellent compound. Synthesis of dihydronepetalactone may be achieved by hydrogenation of nepetalactone, the major constituent of catmint essential oils. This compound, and compositions thereof, which also has fragrance properties, may be used commercially for its insect repellent properties.

Claims

1. A sprayable insect repellent composition comprising a component (a) that comprises a dihydronepetalactone, or a mixture of dihydronepetalactone stereoisomers, as set forth by the formula:

2. The composition according to claim 1 wherein component (b) is selected from one or more members of the group consisting of methyl, ethyl, normal-propyl, isopropyl, normal-butyl, sec-butyl, and tert-butyl alcohol.

3. The composition according to claim 1 wherein component (c)(i) comprises cyclo(ethoxy) methicone.

4. The composition according to claim 1 wherein component (c)(i) comprises cetyl dimethicone polyol.

5. The composition according to claim 1 wherein component (c)(ii) comprises polyglyceryl ricinoleate.

6. The composition according to claim 1 wherein component (c)(ii) comprises propylene glycol ricinoleate.

7. The composition according to claim 1 wherein component (e) comprises both components (e)(i) and (e)(ii).

8. The composition according to claim 1 formulated as a liquid.

9. The composition according to claim 1 formulated as an aerosol.