Domestic animal parasite-repellent device
The present invention comprises a device for storing and releasing one or more mixed active compositions, for intensively controlling the external parasites of domestic animals, insects and other undesirable living organisms, composed of a polymer matrix comprising an ethylene/vinyl acetate copolymer blended with a polyether block amide, said polymer matrix being charged in an active composition/matrix ratio by weight of less than 0.66. A method for manufacturing such a device is also claimed.
1. Device for storing and releasing one or more mixed active compositions for controlling the external parasites of domestic animals, insects and other living organisms, wherein it is composed of a polymer matrix comprising a mixture of an ethylene/vinyl acetate copolymer blended with a polyether block amide, said polymer matrix being charged according to an active composition/matrix weight ratio below 0.66, thereby providing both a knockdown effect and a regular release of said active compositions.
2. Device according to claim 1 , wherein the polymer matrix comprises one or more grades of ethylene/vinyl acetate with a vinyl acetate content ranging between 15 and 33% by weight in relation to ethylene/vinyl acetate.
3. Device according to claim 2 , wherein the polymer matrix comprises two grades of ethylene/vinyl acetate, one comprising 20% by weight of vinyl acetate in relation to ethylene/vinyl acetate, the other comprising 28% by weight of vinyl acetate in relation to ethylene/vinyl acetate.
4. Device according to claim 1 , wherein the ethylene/vinyl acetate copolymer has a glass transition temperature ranging between 50 and 70° C.
5. Device according to claim 4 , wherein the ethylene/vinyl acetate copolymer has a glass transition temperature equal to 58° C.
6. Device according to claim 1 , wherein the thickness of the matrix ranges between 2 and 10 mm.
7. Device according to claim 1 , wherein the active composition(s) comprise natural antiparasitic ingredients and/or synthetic antiparasitic ingredients.
8. Device according to claim 7 , wherein the natural antiparasitic ingredients comprise a synergic mixture of terpenic alcohols and/or essential oils and/or non active oils.
9. Device according to claim 7 , wherein the synthetic antiparasitic ingredients comprise chlorpyrifos and/or diazinon and/or pyrethrinoids.
10. Device according to claim 1 , wherein it is fitted on a collar, or any other support in contact with the animal, made of leather, fabric or plastic material.
11. Device according to claim 2 , wherein the ethylene/vinyl acetate copolymer has a glass transition temperature ranging between 50 and 70° C.
12. Device according to claim 3 , wherein the ethylene/vinyl acetate copolymer has a glass transition temperature ranging between 50 and 70° C.
13. Device according to claim 2 , wherein the ethylene/vinyl acetate copolymer has a glass transition temperature equal to 58° C.