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

A - Human Necessities

01

N

A01N 25/34 (2006.01) A01N 25/10 (2006.01) A01N 53/00 (2006.01) B27K 3/14 (2006.01) B27K 3/50 (2006.01) B32B 27/18 (2006.01)

Patent

CA 2429743

A multi-layer wood pest barrier having a prolonged lifetime that can be as long as the life of a building or structure to be protected. The lifetime protection is achieved by binding at least one pesticide within a continuous or discontinuous polymer matrix layer thereby substantially reducing release of the pesticide from the matrix. The release rate of the pesticide from the matrix can be controlled by the use of a carrier such as carbon black. The release of the pesticide from the barrier can be further controlled by inclusion of additional layers which can make the barrier substantially non- releasing.

L'invention concerne une barrière multicouches contre les parasites du bois, présentant une durée de vie efficace prolongée pouvant durer aussi longtemps que le bâtiment ou la structure à protéger. La protection à vie peut être obtenue par liaison d'au moins un pesticide dans une couche matricielle polymère continue ou discontinue, ce qui permet de réduire la libération du pesticide hors de la matrice. La vitesse de libération du pesticide loin de la matrice peut être régulée à l'aide d'un excipient, tel que du noir de carbone. La libération du pesticide loin de la barrière peut être également régulée par ajout de couches supplémentaires qui permettent à la barrière d'être pratiquement non-diffusante.

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