Long-chain quaternary ammonium compounds as wood treatment...

B - Operations – Transporting – 27 – K

Patent

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B27K 3/15 (2006.01) B32B 21/04 (2006.01) B32B 23/04 (2006.01) B32B 23/06 (2006.01)

Patent

CA 2605735

A composition is disclosed comprising a long-chain quaternary ammonium compound and a wood preservative active agent or a mixture thereof. The long- chain quaternary ammonium compound includes at least one alkyl moiety having from 16 to 50 carbon atoms, unsubstituted or substituted with one or more N, O, S, or halogen atoms. A method of treating wood is disclosed, comprising impregnating wood with the above composition in an amount effective to reduce the preservative active ingredient loss in the treated wood or to increase the resistance of the wood to decay. Treated wood and wood products are disclosed comprising wood impregnated with the above composition, including a treatment level of the long-chain quaternary ammonium compound effective to reduce the preservative active ingredient loss in the treated wood or to increase the resistance of the wood to decay.

L'invention concerne une composition contenant un composé d'ammonium quaternaire à longue chaîne et un agent actif pour la conservation du bois ou un mélange des deux. Le composé d'ammonium quaternaire à longue chaîne comporte au moins une fraction alkyle dotée de 16 à 50 atomes de carbone, avec ou sans substitution avec un ou plusieurs atomes N, O, S ou halogène. La présente invention porte également sur un procédé pour traiter du bois, selon lequel le bois est imprégné de la composition susmentionnée en une quantité suffisante pour réduire la perte du composant actif de conservation dans le bois traité ou pour augmenter la résistance du bois à la dégradation. L'invention concerne aussi du bois traité et des produits du bois traités, ainsi que du bois imprégné de la composition susmentionnée, y compris un niveau de traitement au composé d'ammonium quaternaire à longue chaîne, suffisant pour réduire la perte du composant actif de conservation dans le bois traité ou pour augmenter la résistance du bois à la dégradation.

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