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WO2025207857A1 - Compositions de protection du bois - Google Patents

Compositions de protection du bois

Info

Publication number
WO2025207857A1
WO2025207857A1 PCT/US2025/021697 US2025021697W WO2025207857A1 WO 2025207857 A1 WO2025207857 A1 WO 2025207857A1 US 2025021697 W US2025021697 W US 2025021697W WO 2025207857 A1 WO2025207857 A1 WO 2025207857A1
Authority
WO
WIPO (PCT)
Prior art keywords
copper
preservative composition
wood
wood preservative
benzovindiflupyr
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/US2025/021697
Other languages
English (en)
Inventor
Min Chen
Simon Forster
Justin DUMA
Stephen Uphill
Andrew Hughes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arxada LLC
Original Assignee
Arxada LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Arxada LLC filed Critical Arxada LLC
Publication of WO2025207857A1 publication Critical patent/WO2025207857A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
    • A01P3/00—Fungicides
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N45/00—Biocides, pest repellants or attractants, or plant growth regulators, containing compounds having three or more carbocyclic rings condensed among themselves, at least one ring not being a six-membered ring
    • A01N45/02—Biocides, pest repellants or attractants, or plant growth regulators, containing compounds having three or more carbocyclic rings condensed among themselves, at least one ring not being a six-membered ring having three carbocyclic rings
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A01N59/16—Heavy metals; Compounds thereof
    • A01N59/20—Copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/16—Inorganic impregnating agents
    • B27K3/22—Compounds of zinc or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds

Definitions

  • Wood-based products are subject to attack from a wide variety of organisms, including molds, fungi, and insects. As such, these organisms may cause the wood-based product’ s wood to decay and reduce the product’s mass and structural integrity.
  • Wood preservatives have been developed to combat microorganism attacks. Wood-based products may be treated with a wood preservative via applying the preservative directed to the surface, by dip, spray or brush, or by vacuum pressure immersion. During industrial application of preservatives, wood-based products are typically impregnated with the preservative treatment solution to achieve either shell or full cell type penetration into the substrate. A wood preservative treatment may have a significant bearing on the useful service life of the treated wood-based product.
  • Propiconazole and tebuconazole are widely used as wood preservatives to protect treated wood from discoloring and decay fungi.
  • azoles have been under regulatory scrutiny.
  • propiconazole use on playground equipment and furniture has been restricted.
  • Issues with tebuconazole include potential resistance. From the long-term perspective, azoles are not the right candidate for future wood preservatives. Therefore, alternatives are needed to replace azoles in existing wood preservatives.
  • the present disclosure is directed to a wood preservative composition.
  • the wood preservative composition may be useful in inhibiting proliferation of wood decaying microorganisms.
  • the wood preservative composition may include a copper containing biocide.
  • the wood preservative compound may further include benzovindiflupyr.
  • benzovindiflupyr and a copper containing biocide may be present in the wood preservative composition at a ratio of from about 1 : 1 to about 1 : 1000.
  • the present disclosure is directed to a method for treating a wood product. The method may include applying to the wood product a biocidally effective amount of a wood preservative composition that includes benzovindiflupyr and a copper containing biocide.
  • the present disclosure is directed to a method for inhibiting Rhodonia placenta in a wood product by applying to the wood product a biocidally effective amount of the wood preservative composition disclosed herein.
  • the present disclosure is directed to a wood preservative composition.
  • the wood preservative composition may be useful in inhibiting proliferation of wood decaying microorganisms.
  • the wood preservative composition may include a copper containing biocide.
  • the wood preservative compound may further include benzovindiflupyr.
  • benzovindiflupyr and a copper containing biocide may be present in the wood preservative composition at a ratio of from about 1 : 1 to about 1 : 1000.
  • the wood preservative composition disclosed herein may include a copper containing substance.
  • the copper containing biocide may be an inorganic copper compound, or copper granulate.
  • the copper containing biocide may include inorganic copper salts including, but not limited to, carbonate, bicarbonate, sulphate, nitrate, chloride, hydroxide, borate, fluoride or oxide.
  • the copper containing biocide may be a copper oxide, such as cuprous oxide and cupric oxide.
  • the copper containing biocide may be a copper salt, such as copper salts of fatty and rosin acids, copper ethylenediamine complex, copper triethanolamine complex, copper ethylenediaminetetraacetate, and copper thiocyanate.
  • the copper containing biocide may include, but is not limited to, copper octanoate, copper diammonia diacetate complex, copper ethanolamine complex, copper naphthenate, and copper 8-quinolinoate.
  • the copper containing biocide may be basic copper (II) carbonate, copper (II) hydroxide, copper 8-quinolinolate, copper (II) pyrithione, copper acetyl acetonate, or copper (II) oxide.
  • the copper containing biocide may be a basic copper carbonate, a copper oxide, or a combination thereof. More preferably, the copper containing biocide may be basic copper carbonate.
  • the copper containing biocide may include, but is not limited to, a basic copper carbonate, a copper oxide, basic copper carbonate (CuC03.Cu(OH)2), copper (II) acetate, copper ammonium carbonate complex, copper (II) hydroxide, copper (II) oxide, copper oxychloride, copper oxychloride sulfate, copper ammonium complex, chelates of copper citrate, chelates of copper gluconate, copper (II) sulphate pentahydrate, or a combination thereof.
  • the copper containing biocide may be present in the wood preservative composition in an amount of from about 0.05% to about 30% by weight, such as from about 0.1% by weight to about 27% by weight, such as from about 0.5% by weight to about 25% by weight, such as from about 1% by weight to about 20% by weight, such as from about 5% by weight to about 15% by weight, or any range therebetween.
  • the copper containing biocide may be present in the preservative composition in an amount of from about 0.05% by weight to about 25% by weight.
  • the copper containing biocide may be present in the preservative composition in an amount of from about 0.1% by weight to about 10% by weight.
  • the preservative composition may include a succinate dehydrogenase inhibitor in combination with the copper containing biocide.
  • the succinate dehydrogenase inhibitor may be selected from a group consisting of flutolanil, isofetamid, flupyram, fluxapyroxad, penthiopyrad, boscalid, fenfuram, caboxin, thifluzamide, benzovindiflupyr, bixafen, furametpyr, isopyrazam, penthiopyrad, sedaxane, or a combination thereof.
  • the succinate dehydrogenase inhibitor may be benzovindiflupyr.
  • the succinate dehydrogenase inhibitor may be present in the wood preservative composition in an amount of from about 0.001% by weight to about 30% by weight, such as from about 0.001% by weight to about 25% by weight, such as from about 0.1% by weight to about 20% by weight, such as from about 1% by weight to about 15% by weight, or any range therebetween.
  • the succinate dehydrogenase inhibitor may be present in the wood preservative composition in an amount from about 0.001% by weight to about 25% by weight.
  • the succinate dehydrogenase inhibitor may be present in the wood preservative composition in an amount from about 0.001% by weight to about 10% by weight.
  • Benzovindiflupyr and the copper containing biocide may be present in the wood preservative composition disclosed herein at a weight ratio of from about 1 : 1 to about 1 : 1000, such as from about 1 : 10 to about 1 :500, such as from about 1 :30 to about 1 :250, such as from about 1 :50 to about 1 :200, or any range therebetween.
  • benzovindiflupyr and the copper containing biocide may be present in the wood preservative composition disclosed herein at a weight ratio of from about 1 : 50 to about 1 :200.
  • the amine donor compound may be present in the wood preservative composition in an amount of from about 0.1% by weight to about 35% by weight, such as from about 0.3% by weight to about 30% by weight, such as from about 0.75 % by weight to about 25% by weight, such as from about 1% by weight to about 15% by weight, or any range therebetween.
  • the amine donor compound may be present in the wood preservative composition in an amount from about 0.3% by weight to about 30% by weight.
  • the amine donor compound may be present in the wood preservative composition in an amount from about 0.75% by weight to about 25% by weight.
  • the preservative composition disclosed herein may further include an emulsifier. Suitable emulsifiers may include an ethoxylate that helps to keep water-insoluble components of the formulation in the form of a stable emulsion of small particles suspended in an aqueous phase.
  • the alkoxylated aliphatic mono-alcohol may be an ethoxylated C12-C16 linear aliphatic alcohol containing an average of about 8 to about 12 ethylene oxide units per molecule.
  • ethoxylated tridecanol containing an average of about 10 ethylene oxide units is suitable for use in the present disclosure.
  • alkoxylated phenols in particular ethoxylated phenols wherein the phenol may be substituted with one or more alkyl groups (in particular, long chain alkyl groups such as nonyl or dodecyl groups or aralkyl groups, such as in tristyrylphenol).
  • the emulsifier may be present in the wood preservative composition in an amount of from about 0.001% by weight to about 7% by weight, such as from about 0.05% by weight to about 5% by weight, such as from about 0.1% by weight to about 3% by weight, such as from about 0.5% by weight to about 1.5% by weight, or any range therebetween.
  • the emulsifier may be present in the wood preservative composition in an amount from about 0.05% by weight to about 5% by weight.
  • the emulsifier may be present in the wood preservative composition in an amount from about 0.1% by weight to about 3% by weight.
  • the preservative composition disclosed herein may further include a dispersant or a dispersing agent.
  • the dispersant may include, but is not limited to, an acrylate, a surfactant, or a combination thereof.
  • the dispersant may be an acrylate that may be formed as a homopolymer or a co-polymer.
  • a co-polymer can include incorporation of another monomer (e.g., butadiene styrene).
  • the acrylate can be modified to include one or more nitrile groups.
  • the preservative composition may include various acrylates, acrylate butadiene styrene copolymers, and acrylonitrile butadiene styrene copolymers.
  • the acrylate may be a styrene acrylic co-polymer.
  • said dispersants are provided for example purposes, and additional dispersants may be used alone or in combination with embodiments of the present disclosure.
  • the acrylate polymer or copolymer may include a mass fraction of an acrylate monomer.
  • the acrylate may include a copolymer that includes an acrylate monomer (e.g., methyl methacrylate) and a second monomer (e.g., butadiene styrene).
  • the mass fraction of the acrylate monomer to the total weight of the copolymer can define the mass fraction.
  • the mass fraction of acrylate monomer to the total weight of the copolymer can be no less than about twenty (20) wt% and no greater than about one hundred (100) wt% such as no less than about thirty (30) wt% and no greater than about eighty (80) wt%, no less than about forty (40) wt% and no greater than about seventy (70) wt%, or no less than about forty five (45) wt% and no greater than about sixty (60) wt% (e g., one hundred (100) wt%, ninety five (95) wt%, ninety (90) wt%, eighty five (85) wt%, eighty (80) wt%, seventy five (75) wt%, seventy (70) wt%, sixty five (65) wt%, sixty (60) wt%, fifty five (55) wt%, or fifty (50) wt%).
  • the dispersant may be a surfactant, such as a nonionic surfactant.
  • the nonionic surfactant may have a hydrophilic-lipophilic balance (HLB) in the range of from about 8-20, such as from about 10-18, such as from about 12-15, or any range therebetween.
  • HLB hydrophilic-lipophilic balance
  • the HLB of the nonionic surfactant may be in the range of from about 8-20.
  • the HLB of the nonionic surfactant may be in the range of from about 12-15.
  • the HLB of the nonionic surfactant may be in the range of from about 10-18.
  • the HLB of the nonionic surfactant may be greater than about 10.
  • Suitable types of nonionic surfactants include, but are not limited to, polyoxyalkylene glycol alkyl ethers (e.g., polyoxyethylene glycol alkyl ethers, polyoxypropylene alkyl ethers, polyoxyethylene/propylene alkyl ethers), glucoside alkyl ethers, polyoxyalkylene glycol alkylphenol ethers (e.g., polyoxyethylene glycol alkylphenol ethers, polyoxypropylene glycol alkylphenol ethers, polyoxyethylene/propylene glycol alkylphenol ethers), glycerol alkyl esters, polyoxyalkylene glycol sorbitan alkyl esters (e.g., polyoxyethylene glycol sorbitan alkyl esters), sorbitan alkyl esters, cocamide MEA, cocamide DEA, block copolymers of polyethylene glycol and polypropylene glycol (poloxamers), polyalkoxylated
  • Particular nonionic surfactants include alkoxylated aliphatic mono-alcohols and alkoxylated aromatic mono-alcohols.
  • Such surfactants are typically prepared by reacting one or more alkylene oxides (e.g., ethylene oxide, propylene oxide, mixtures of ethylene oxide and propylene oxide) with one or more mono-alcohols (e.g., aliphatic alcohols, which may be for example linear or branched, primary or secondary, or aromatic alcohols, such as phenols, including alkyl- and aralkyl -substituted phenols).
  • alkylene oxides e.g., ethylene oxide, propylene oxide, mixtures of ethylene oxide and propylene oxide
  • mono-alcohols e.g., aliphatic alcohols, which may be for example linear or branched, primary or secondary, or aromatic alcohols, such as phenols, including alkyl- and aralkyl -substituted
  • the number of moles of alkylene oxide reacted per mole of the mono-alcohol may be varied as may be desired, but typically is from about 2 to about 50 on average. If more than one type of alkylene oxide is used, the alkylene oxides may be reacted as a mixture (to provide a polyoxyalkylene segment having a random copolymer structure) or sequentially (to provide a polyoxyalkylene segment having a block copolymer structure).
  • anionic surfactants in the present disclosure include, but are not limited to, alkyl sulfates, alkyl ether sulfates, sulfated alkanolamides, glyceride sulfates, alkyl aryl sulfonates (including straight-chain alkylbenzenesulfonates, branched alkylbenzenesulfonates, alkylnaphthalene-sulfonates), alpha olefin sulfonates, lignosulfonates, sulfo-carboxylic compounds (e.g., sodium lauryl sulfoacetate, sulfosuccinates (including dialkylsulfosuccinates), sulfosuccinamates, organo phosphored surfactants, sacrosides, hydroxyalkane-sulfonates, alkanesulfonates, alkylphenoxy polyoxyethylene propyl s
  • anionic surfactants are sulfonate surfactants, in particular salts of alkyl aryl sulfonates, especially salts of Cs-C is alkyl benzene sulfonates such as salts of dodecylbenzene sulfonate, and combinations thereof.
  • the dispersant may be present in the wood preservative composition in an amount of from about 0.01% by weight to about 20% by weight, such as from about 0.05% by weight to about 15% by weight, such as from about 0.1% by weight to about 10% by weight, such as from about 0.5% by weight to about 5% by weight, or any range therebetween. In one example embodiment, the dispersant may be present in the wood preservative composition in an amount from about 0.05% by weight to about 15% by weight. In another example embodiment, the dispersant may be present in the wood preservative composition in an amount from about 0.1% by weight to about 10% by weight.
  • the wood preservative composition disclosed herein may be used to treat a cellulosic or wood-based product.
  • cellulosic materials which may be treated with a wood preservative composition of the present disclosure includes lignocellulosic substrates, engineered wood products, wood plastic composites, cardboard and cardboard faced building products such as plasterboard, and cellulosic material, such as cotton. Also, leather, textile materials and even synthetic fibers, hessian, rope, and cordage as well as composite wood materials.
  • the present disclosure is described with reference to the treatment of wood but it will be appreciated that other cellulosic materials may be treated analogously.
  • a treated cellulosic or wood based product may be treated with an amount of the preservative formulation (or ready to use formulation) such that the treated cellulosic or wood based product includes from about 5 grams per meter cubed (g/m 3 ) to about 1000 g/m 3 benzovindiflupyr, such as from about 10 g/m 3 to about 500 g/m 3 benzovindiflupyr, such as from about 50 g/m 3 to about 400 g/m 3 benzovindiflupyr, such as from about 75 g/m 3 to about 250 g/m 3 benzovindiflupyr, or a combination thereof.
  • a treated cellulosic or wood based product may retain copper in an amount of from about 0.5 kg/m 3 to about 5.0 kg/m 3 , such as from about 0.75 kg/m 3 to about 4.0 kg/m 3 , such as from about 1.0 kg/m 3 to about 3.0 kg/m 3 , or any range therebetween.
  • the treated cellulosic or wood based product may retain copper in an amount of from about 0.5 kg/m 3 to about 5.0 kg/m 3 .
  • the treated cellulosic or wood based product may retain copper in an amount of from about 0.75 kg/m 3 to about 4.0 kg/m 3 . In another example embodiment, the treated cellulosic or wood based product may retain copper in an amount of from about 1.0 kg/m 3 to about 3.0 kg/m 3 .
  • the wood-based product may be selected from the group comprising sawn timber, lumber, logs, posts, glued solid timber, glued laminated timber, laminated veneer lumber, plywood, strand board, oriented strand board, flake board, particle board, medium density fiberboard, high density fiberboard, hardboard, or a combination product.
  • a wood or cellulosic based product may be treated with a ready to use wood preservative composition of the present disclosure.
  • the wood or cellulosic based product may include a copper containing biocide, a succinate dehydrogenase inhibitor, or a combination thereof in the amounts discussed above in regards to the ready to use composition.
  • the wood-based product may be treated by applying to the wood product a biocidally effective amount of the wood preservative composition including benzovindiflupyr and a copper containing biocide.
  • wood preservative compositions disclosed herein are particularly effective against fungi and/or insects.
  • Exemplary microorganisms may include one or more species from one or both of the following groups:
  • Fungi Acremonium such as Acremonium strictnm, Alternaria such as Alternaria tenuis o Alternaria ahernata, Aspergillus such as Aspergillus niger ox Aspergillus brasiliensis, Candida such as Candida albicans, Chaetomium such as Chaetomium globosum, Coniophora such as Coniophora souna, Fibroporia such as Fibroporia radiculosa, Fusarium such as Fusarium solani, Geotrichum such as Geotrichum candidum, Gloeophyllum such as Gloeophyllum trabeum, Lentinus such as Lentinus tigrinus, Penicillium such as Penicillium glaucum, Penicillium funiculosum or Penicillium pinophilum, Rhodotorula such as Rhodotorula rubra or Rhodotorula muci
  • the wood preservative compositions disclosed herein are particularly effective against Rhodonia placenta. In another example embodiment, the wood preservative compositions disclosed herein are particularly effective against Wolfiporia cocos. In yet another example embodiment, the wood preservative compositions disclosed herein are particularly effective against Trametes versicolor.
  • the present disclosure is further directed to a method of forming a wood preservative composition as well as treating a wood-based product with the wood preservative composition.
  • the copper containing biocide and the succinate dehydrogenase inhibitor may be homogenized (e.g. decreased in size from larger than micron size to the above discussed sizes/particle size distribution), together, or may instead be homogenized separately and then combined, either alone, or in combination with one or more dispersants/complexing agents.
  • the copper containing biocide and the succinate dehydrogenase inhibitor may be pre-mixed, however, it should be understood that, in some example aspects, the wood preservative composition may be present in a multi-part form and mixed shortly before treating the wood or cellulose based product. However, in an example aspect, the wood preservative composition is in one-part form, such as a pack or mix, and contains each of the copper containing biocide and the succinate dehydrogenase inhibitor in the amounts discussed above.
  • the wood preservative composition in one example aspect is diluted as discussed above, and used to treat a wood or cellulose based product.
  • the application of the wood preservative composition of the present disclosure to the wood or cellulose based product may be by one or more of dipping, deluging, spraying, brushing, misting, or other surface coating means or by impregnation methods, e.g., partial vacuum, high pressure or double vacuum impregnation into the body of the wood or other material.
  • the method is impregnation under pressure.
  • the disclosure herein can be construed as excluding any element or process step that does not materially affect the basic and novel characteristics of the composition or process. Additionally, in some embodiments, the disclosure can be construed as excluding any element or process step not specified herein.
  • the terms “about,” “approximately,” or “generally,” when used to modify a value, indicates that the value can be raised or lowered by 10% and remain within the disclosed aspect, such as 7.5%, such as 5%, such as 4%, such as 3%, such as 2%, such as 1%, or any ranges or values therebetween.
  • the term “substantially free of’ when used to describe the amount of substance in a material is not to be limited to entirely or completely free of and may correspond to a lack of any appreciable or detectable amount of the recited substance in the material.
  • “optional” or “optionally” means that the subsequently described material, event or circumstance may or may not be present or occur, and that the description includes instances where the material, event or circumstance is present or occurs and instances in which it does not.
  • “w/w%” and “wt%” means by weight as a percentage of the total weight or relative to another component in the composition.
  • the phrase “effective amount” means an amount of a compound that promotes, improves, stimulates, or encourages a response to the particular condition or disorder or the particular symptom of the condition or disorder.
  • a simple 96-well matrix was constructed with varied ratios of the two compounds under investigation.
  • 2x Potato Dextrose Agar (PDA) was melted in a water bath set to 60 °C and then poured to the appropriate wells.
  • stock solutions for biocide “A” (copper) and biocide “B” (benzovindiflupyr) were prepared separately.
  • 2 mL of the slurry was dispersed into the appropriate wells using a 10 mL serological pipet to minimize the presence of air bubbles on the agar surface.
  • a plug of the inoculum of each fungal sample was transferred to an agar well. Tests were repeated in biological duplicate, utilizing culture transferred from different secondary inoculum. After inoculation the plates are placed in a clean tote and incubated at 25 ⁇ 2 °C and 80% relative humidity for two weeks.
  • the plates are rated for growth in the wells by test fungi and the minimum inhibitory concentrations for each test solution combination determined. If there is no growth of the test organism on the control wells, well H12, the test is not valid and should be repeated. For wells having little or no visible growth, a stereoscope should be used for verification of presence/absence of growth.
  • the lowest concentration which inhibits fungal growth is the MIC value and recorded as the result for the respective solution/species.
  • the MIC value for each of the samples individually was determined from the row or column that contains just that sample. Then the MIC values of the combination was determined by the rest of the plate which has various concentration combinations. The MIC values were then used to calculate the fractional inhibitory concentration (FIC) for the combination.
  • the FIC values are then used to determine if the compounds are synergistic, antagonistic, or additive.
  • the formula for determining the FIC is:
  • FIC MIC of Combination/ MIC of Solution “A” + MIC of Combination/ MIC of Solution “B” [0060]

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  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Plant Pathology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Inorganic Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Forests & Forestry (AREA)
  • Health & Medical Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Microbiology (AREA)
  • Mycology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

En général, la présente invention concerne une composition de protection du bois. La composition de protection du bois peut être utile pour inhiber la prolifération de micro-organismes de dégradation du bois. Dans un mode de réalisation donné à titre d'exemple, la composition de protection du bois peut comprendre un biocide contenant du cuivre. Le composé de protection du bois peut en outre comprendre du benzovindiflupyr. Par exemple, du benzovindiflupyr et un biocide contenant du cuivre peuvent être présents dans la composition de protection du bois dans un rapport d'environ 1 : 1 à environ 1 : 1000.
PCT/US2025/021697 2024-03-28 2025-03-27 Compositions de protection du bois Pending WO2025207857A1 (fr)

Applications Claiming Priority (2)

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US202463570971P 2024-03-28 2024-03-28
US63/570,971 2024-03-28

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WO2025207857A1 true WO2025207857A1 (fr) 2025-10-02

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018175767A1 (fr) * 2017-03-24 2018-09-27 Koppers Performance Chemicals Inc. Compositions de conservation de bois à base de solvant
US20210007355A1 (en) * 2018-03-26 2021-01-14 Upl Ltd Fungicidal combinations
US20220000115A1 (en) * 2016-12-16 2022-01-06 Koppers Performance Chemicals Inc. Wood preservative and method for producing same
US20220039388A1 (en) * 2017-03-07 2022-02-10 Upl Ltd Fungicidal combinations
WO2022198051A1 (fr) * 2021-03-19 2022-09-22 Arxada, LLC Agent de conservation du bois amélioré contenant du zinc et du bore
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