Composition, method of making, and treatment of wood with an...

B - Operations – Transporting – 27 – K

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B27K 3/08 (2006.01) A01N 25/04 (2006.01) A01N 25/14 (2006.01) A01N 25/26 (2006.01)

Patent

CA 2567245

A method of preserving wood includes injecting into the wood an effective amount of a aqueous wood-injectable biocidal slurry, said a wood-injectable biocidal slurry containing dispersants and sub-micron biocidal particles selected from at least one of the following classes: 1) a plurality of particles containing at least 25% by weight of a solid phase of sparingly soluble salts selected from copper salts, nickel salts, tin salts, and/or zinc salts; 2) a plurality of particles containing at least 25% by weight of a solid phase of sparingly soluble metal hydroxides selected from copper hydroxide, nickel hydroxide, tin hydroxide, and/or zinc hydroxide; 3) a plurality of particles containing at least 25% by weight of a solid phase comprising a substantially-insoluble organic biocide selected from triazoles, chlorothalonil, iodo-propynyl butyl carbamate, copper-8-quinolate, fipronil, imidacloprid, bifenthrin, carbaryl, strobulurins, and indoxacarb; 4) a plurality of particles containing on the outer surface thereof a substantially- insoluble organic biocide; 5) a plurality of particles containing a solid phase of a biocidal, partially or fully glassified composition comprising at least one of Zn, B, Cu, and P. The particles may advantageously contain metallic copper, a leachability barrier, pigments, dyes, or other adjuvants disposed on the outer surface thereof.

Un procédé de conservation du bois consiste à injecter dans le bois une dose efficace d'une pâte biocide aqueuse injectable dans le bois, contenant des dispersants et des particules biocides submicroniques choisies dans au moins une des classes suivantes : 1) une pluralité de particules contenant au moins 25 % en poids d'une phase solide de sels modérément solubles choisis parmi des sels de cuivre, des sels de nickel, des sels d'étain et/ou des sels de zinc ; 2) une pluralité de particules contenant au moins 25 % en poids d'une phase solide d'hydroxydes métalliques modérément solubles choisis parmi hydroxyde de cuivre, hydroxyde de nickel, hydroxyde d'étain et/ou hydroxyde de zinc : 3) une pluralité de particules contenant au moins 25 % en poids d'une phase solide comprenant un biocide organique sensiblement insoluble choisi parmi triazoles, chlorothalonil, iodopropynylbutylcarbamate, 8-quinolate de cuivre, fipronil, imidacloprid, bifenthrin, carbaryle, strobulurines, et indoxacarb; 4) une pluralité de particules contenant sur leur surface extérieure un biocide organique sensiblement insoluble ; 5) une pluralité de particules contenant une phase solide d'une composition biocide partiellement ou intégralement vitrifiée comprenant au moins Zn, B, Cu et P. Ces particules peuvent contenir avantageusement du cuivre métallique, une barrière de lixiviabilité, des pigments, des colorants ou d'autres adjuvants prévus sur la surface extérieure de celles-ci.

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