Barrier preventing wood pest access to wooden structures

Details Barrier preventing wood pest access to wooden structures Barrier preventing wood pest access to wooden structures

E - Fixed Constructions

04

B

E04B 1/72 (2006.01) A01M 1/24 (2006.01) A01N 25/10 (2006.01) A01N 25/34 (2006.01) A01N 53/00 (2006.01) A01N 57/16 (2006.01)

Patent

CA 2320948

A method and device are disclosed which prevent the intrusion of insects (termits, ants) into wood structures by using a barrier comprising a polymer (preferably a polyurethane) having incorporated therein a pesticide (pyrethroid or oganophosphate insecticide). The insecticidal agent may be incorporated into the polymer by itself or in association with a carrier (preferably carbon black or activated carbon) as a bound friable mix. The barrier is placed between the wood structure (e.g. a wall or windowsill) and a non-wood structural portion such as soil. In the disclosed method the barrier maintains a minimal effective level of insecticide for a predetermined period of time.

Cette invention a trait à un procédé, ainsi qu'au dispositif correspondant, visant à interdire toute intrusion d'insectes (termites, fourmis), lequel procédé fait appel à une barrière constituée par un polymère, de préférence un polyuréthanne, renfermant un pesticide, un pyrethrinoïde de synthèse ou un insecticide d'organophosphate. L'agent insecticide peut être incorporé au polymère seul ou associé à un véhicule, de préférence du noir de carbone ou du charbon actif, sous forme de mélange friable. On applique cette barrière entre la structure en bois, une paroi ou un appui de fenêtre, par exemple, et un élément structural tel que le sol. Cette barrière conserve une concentration efficace minimale d'insecticide pendant un laps de temps prédéterminé.

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