Wood preservation method and wood preservative

Details Wood preservation method and wood preservative Wood preservation method and wood preservative

B - Operations, Transporting

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Patent

CA 2122609

The invention concerns a method and a preservative for protecting wood against decay. According to the method wood is treated with a wood preservative capable of preventing the growth and spread of fungi, said preservative containing at least one complexing agent which binds at least a portion of chose metals, typically iron and manganese, naturally occurring in wood that are essential to the growth of fungi. The complexing agents employed can be, e.g. ethylenediaminetetra-acetate (EDTA), ethylenediamine-di-(o-hydroxyphenylacetate (EDDHA), a polyphosphate (Na5P3O10) or a siderophore produced by a microorganism. The wood preservative used in the method is water-borne and specific to the decay fungi attacking wood.

Procédé et produit de protection du bois contre la pourriture. Selon le procédé, on traite le bois avec un produit de conservation apte à empêcher la croissance et la propagation des champignons, ledit produit contenant au moins un agent complexant pouvant se lier à au moins une partie des métaux, habituellement le fer et le manganèse, que l'on trouve à l'état naturel dans le bois et sans lesquels les champignons ne peuvent se développer. Les agents complexants utilisés sont, par exemple, l'éthylènediaminetétra-acétate (EDTA), l'éthylènediamine-di-(o-hydroxyphénylacétate (EDDHA), un polyphosphate (Na5P3O10) ou un sidérophage produit par un microorganisme. Ledit produit de conservation du bois est aqueux et spécifique des champignons lignivores s'attaquant au bois.

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