Natural insect and arthropod repellent

A - Human Necessities – 61 – K

Patent

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Details

A61K 8/36 (2006.01) A61Q 17/02 (2006.01)

Patent

CA 2295988

A topical insect repellent with extended duration of protection was obtained from mixtures of molecules based on two or more volatile repellent organic molecular species occurring naturally on human skin surfaces. The novel repellent comprises mixtures of lower, intermediate, and higher volatility organic molecules. Active ingredients for formulations are obtained from homologous series of carboxylic acids, alcohols, ketones, and lactones which span a similar range of volatility and which occur naturally on the skin surface. Volatile silicone fluid imparts mildness and water repellency to the repellent formulations. The inventive repellent exhibits longevity and repellency that is comparable to DEET. The inventive repellent, formulated in a volatile silicone fluid, was shown to repel and incapcitate stable flies. Repellency extends to mosquitoes and other biting flies or insects.

On a obtenu un répulsif local contre les insectes présentant une durée prolongée de protection, à partir de mélanges de molécules à base d'au moins deux espèces organiques moléculaires de répulsif volatil se produisant naturellement à la surface de la peau humaine. Le nouveau répulsif comprend des mélanges de molécules organiques de volatilité faible, intermédiaire et élevée. Les ingrédients actifs des formulations sont obtenus à partir de séries homologues d'acides carboxyliques, d'alcools, de cétones et de lactones couvrant une gamme similaire de volatilité et se produisant naturellement à la surface de la peau. Un fluide de silicone volatil confère une douceur et un caractère hydrophobant aux formulations de répulsif. Le répulsif de l'invention présente une longévité et un caractère répulsif comparable au N,N-diéthyl-M-toluamide (DEET). Le répulsif de l'invention, formulé sous la forme d'un fluide de silicone volatil, s'est révélé utile pour repousser et neutraliser les mouches piquantes des étables. Le caractère répulsif s'applique aux moustiques ainsi qu'à d'autres mouches piquantes ou insectes.

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