Abstract: The invention relates to a process for treating a lignocellulosic material, preferably wood, comprising the following steps: (1) soaking of the material with organic fluid in order to dissolve at least 40% and at most 85%, in weight %, of the lignin of the material; (2) washing with organic fluid so as to discharge the dissolved lignin; (3) filling with a filling compound; and (4) finishing, so as to obtain a composite formed of a three-dimensional network of transformed filling compound incorporated into a cellulose and lignin network. The invention also relates to a composite structure able to be obtained in this way, and to any part comprising at least one such structure.

Abstract: Tissue papers and methods of making are disclosed herein. In one aspect, a tissue paper is substantially free of a chemical debonder and has a geometric mean tensile (GMT) in a range between about 500 and about 5,000 g/3 inches (g/3 in.) and a caliper in a range between about 50 and about 350 mils/8 sheets.

Abstract: A method for separating fibers using a container, a vacuum pump which is connected to the container volume via a vacuum valve, and a ventilation line with a cross-sectional opening and a valve. The valve can be switched between a closed and open state in a time domain of 19-41 ms and from the open state into the closed state in a time domain of 20 to 45 ms. The method has the steps of filling the container with water and fiber composite, closing the container, mixing the water and the fiber composite using mechanical energy, by stirring, generating kinetic energy in the fiber composite by lowering the container internal pressure to a value between ?700 to ?950 hPa, and equalizing the pressure in the container to generate cavitation in the fiber composite. The pressure equalization taking place within at least onetime domain of 0.001-1 s.

Abstract: A composite laminate system for indoor and outdoor applications, comprising a wood layer comprised of a thin plank or veneer. An aqueous, penetrating primer is applied in a first coating to all surfaces of the wood layer, and the primer is designed to prevent and resist decay from bio attack, insects and other intrinsic bacteria, featuring antibacterial and mold inhibiting properties, including a UV inhibitor. A first aqueous nano urethane acrylic coating is applied on all surfaces of the wood layer on top of the primer coating. At least a second aqueous nano urethane acrylic coating is applied to a top surface of the wood layer on top of the first aqueous nano urethane acrylic coating. A polyvinyl chloride (PVC) foam sheeting layer is glued to the wood layer with coatings using a resin adhesive glue layer interposed between the PVC foam sheeting and the wood layer.

Abstract: The invention relates to systems and techniques for manufacturing articles containing cellulosic material, a coupling agent, and a binder resin, and related processes of making and using the cellulosic articles. In particularly exemplary embodiments, the manufactured articles are door skins, sometimes known as door facings, and doors made from the door skins. The article contains a lipophilic cellulosic material, a coupling agent, and a binder. The coupling agent is believed to increase the hydrophilicity (wetability) of the lipophilic cellulosic material.

Abstract: A treated cellulosic material comprising a cellulosic material having a porous structure defining a plurality of pores, at least a portion of the pores containing a treating agent comprising a polymer comprising a modified cellulose polymer; and a modifying agent comprising a hydrophobic amine, a metal ion, or a quat. The present disclosure further describes a method for preparing a treated cellulosic material comprising (a) providing a cellulosic material; (b) a first treatment protocol comprising impregnating the cellulosic material with a dispersion comprising a polymer, the polymer comprising a modified cellulose polymer; and (c) a second treatment protocol comprising impregnating the cellulosic material with a modifying agent, the modifying agent comprising a hydrophobic amine, a metal ion, or a quat.

Abstract: The proposed invention relates to a method for fluid treatment of wood comprising the steps of placing the wood in an airtight tank, evacuating the airtight tank to establish a vacuum environment for the wood, applying a fluid to the wood. Additionally, the method may further comprise the subsequent step of pressurizing the airtight tank to establish a pressurized environment for the wood. The method may further comprise the subsequent step of subjecting the wood to a subsequent heating, and/or the prior step of subjecting the wood to a prior heating by electromagnetic radiation through one or more electrodes.

Abstract: The present invention relates to a method for increasing the water resistance of a porous material, in particular wood, in which method a block-polymer comprising at least one hydrophobic block and at least one hydrophilic block, is dissolved in a fluid and applied to the material under supercritical conditions.

Abstract: The present invention relates to a method for reducing or preventing the attack of marine woodborers on wood situated in a marine environment characterised by impregnating said wood with a biocidal composition comprising traloypril.

Abstract: The invention relates to a process for acetylation of wood having a density of above 400 kg/m3, particularly, of Southern Yellow Pine, and acetylated wood obtainable by this method. The described acetylation process allows the production of acetylated wood having higher acetylation levels, such as an acetyl content of at least 20% by weight. The acetylated wood has also a low residual acetic acid content, in particular, lower than 1% by weight. The invention is particularly useful for acetylation on industrial scale of pieces of solid wood, preferably, of wood beams.

Abstract: A polymer composition suitable for wood treatment or binding comprises a reaction product of at least a polyol and at least a crosslinking agent. The crosslinking agent has at least 2 carboxylic acid groups per molecule. A wood product comprising a wood substrate and a polymer composition as well as a wood treatment process are also disclosed.

Abstract: According to the present invention there is provided a preservative formulation for use in treating wood or other cellulosic formulations, said formulation comprising: at least one biocidal metal compound; at least one organic compound; and a carrier. Preferably, the preservative formulation is copper/(tebuconazole/propiconazole) in a ratio of about 1:3 w/w; the carrier is preferably aqueous or spirit-based.

Abstract: The present disclosure provides compositions formulated to improve water resistance when topically applied as a treatment to a surface (e.g., the surface of a wood product). Wood products treated with the compositions, as well as methods for applying the compositions to a surface, are also provided.

Abstract: The present invention relates to a composition for treating wood comprising a wood preserving compound and a carrier, wherein the carrier is an emulsion comprising a hydrophobic phase, a hydrophilic phase and a surfactant system. In particular, the surfactant system comprises a non-ionic polyethoxylated alkyl amine and an anionic C10-C16 alkylbenzene sulfonate. Methods of using the composition to treat wood, especially timber, are also described.

Abstract: The invention relates to a wood substrate rendered flame-retardant. The invention provides that on the substrate there is a coating and/or impregnation system with a flame retardant selected from the group consisting of room-temperature-liquid organic halogen compounds and organic phosphorus compounds and organic boron compounds, and that there is also a layer of coating material applied thereto.

Abstract: The present invention relates to a preservative formulation for use in treating wood or other cellulosic materials, said formulation comprising: at least one biocidal metal compound; at least one preservative; and an aqueous carrier, wherein the preservative formulation has an uptake in the sapwood of less than about 220 l/m3 yet achieves substantially full penetration of the sapwood. Preferably, the preservative formulation is copper/tebuconazole in a ratio of about 25/1 w/w; and the wood is around 25 mm in thickness—for instance, decking timber.

Abstract: The present invention relates to functionalized polyorganosiloxanes or silanes for the treatment of lignocellulosic materials.

Abstract: The disclosure relates to compositions for wood preservation and methods of applying compositions for wood preservation. The compositions comprise nonionic surfactant mixtures and prepolymer. Compositions of nonionic surfactant mixtures and prepolymers can be used advantageously in methods to preserve wood by impregnation of the wood with preservatives at ambient atmospheric pressures.

Abstract: Wood products, specifically wood commonly used in construction including dimension lumber, pressure treated pine, composite wood materials such as plywood, particle board, and wafer board, and samples of paper and fabric were variously treated with concentrations of sodium silicate (Na2O.SiO2) also known as water glass. Cellulosic materials including dimension lumber, plywood, particle board, wafer board, paper, and fabric were treated with sodium silicate (Na2O.SiO2) in concentrations ranging from 400-0.04 g Na2O.SiO2/kg water. To overcome the disadvantages of sodium silicate, sodium silicate treated samples were further treated to convert the water soluble sodium silicate to a water insoluble form, thereby overcoming the disadvantages of water solubility, and rendering the material effective for internal and external uses.

Abstract: This invention relates to wood preservatives containing copper complexes that significantly reduce the decay of wood, cellulose, hemicellulose, and lignin caused by fungi and insects. The copper complexes include a chelating compound that has amide functional groups derived from hydration of a cyanoethylated compound or carboxylic acid functional groups derived from hydrolysis of a cyanoethylated compound, or both types of groups.

Abstract: A non-supercritical method for impregnating a refractive timber substrate with an active agent, including preparing an impregnation fluid including a low boiling solvent (methane, ethane, propane, butane, isobutane, fluorinated hydrocarbons such as chlorodifluoromethane (R22), 1,1,1,2-tetrafluoroethane (R134a), 1,1,1-trifluoroethane (R143a), pentafluoroethane (R125), 1,1-difluoroethane (R152a) and difluoromethane (R32) and an active agent; contacting a refractive timber substrate (eg heartwood of radiata pine, spruce species; Douglas fir, fir, poplar, willow, sapwood of cypress pine and certain eucalypt and pine species such as heartwood of messmate, larch, western red cedar, European oak and American white oak) with said impregnation fluid in a liquid state in an impregnation chamber for a time sufficient to allow said fluid to penetrate the pores of said refractive timber substrate; and removing said impregnation fluid in a liquid state from said impregnation chamber and returning to a reservoir.

Abstract: The present application relates to a method for treating wood and wood-based materials for enhancing dimensional stability and surface properties and also for preventing cracking and extending durability. More specifically the invention for the treatment of wood and wood-based materials is directed to a method wherein the wood or wood-based material is subjected to a thermal treatment and the wood or wood-based material is at least partly impregnated with a melamine-containing resin. Subsequently the wood or wood-based material thus impregnated is cured with hot steam at not more than 125° C. preferably up to a maximum of 120° C. In a further aspect the present application includes the thermally treated wood or wood-based material, impregnated with melamine resin and cured, that is obtainable from the method of the invention.

Abstract: Preservation of cellulose based products, such as wood, may be accomplished in an environmentally friendly manner by esterification of the wood with rare saccharides, thereby rendering the wood unfavorable for microorganism based degradation.

Abstract: A process for the acetylation of wood comprising submerging the wood in an acetylation fluid under pressure, and subsequently heating the wood under controlled conditions to initiate two distinct exothermic reactions. The process permits the simultaneous upgrading of large quantities of commercial wood sizes having a natural durability class 4 or class 5 to a unique product of durability class 1 or class 2.

Abstract: A composite wood product containing acetylated wood elements characterised by an average value in thickness swelling not exceeding 5% after subjection to 25 wet-dry/freeze-thaw cycles as described in Table II. Alternative characterisations include moduli of elasticity and rupture, and bending strength. A two stage process for the acetylation of wood elements is also described.

Abstract: The invention relates to sub-micron compositions, and methods of preparing such compositions, in particular for the treatment of substrates against biological degradation biological pests.

Abstract: Wood is treated with a film-forming silicone emulsion composition, a boron compound, and a di- or trivalent metal salt. The wood can be endowed with water repellency, water absorption prevention, dimensional stability, termite control and antifungal properties without altering the appearance and quality of wood. The treatment is also effective in preventing the boron compound from being leached out in water.

Abstract: An oil-borne wood preservative composition for treating poles, posts, piling, cross ties and other wooden structures. The wood preservative composition comprises a fatty acid, bivalent copper, an organic co-biocide and an oil. Methods of producing the composition and methods of treating wood are disclosed.

Abstract: Disclosed is process of preserving hardwoods with ammoniacal copper, ammoniacal zinc or ammoniacal copper and zinc compounds. The preserved hardwoods are usable as various articles of manufacture and, in particular, railroad crossties and switch ties.

Abstract: There is herein described a method for treating lignocellulosic material and lignocellulosic material formed from such a method. More particularly, there is described a method for treating lignocellulosic material which introduces organic material into the lignocellulosic material and which produces a modified lignocellulosic material which has increased strength and is highly durable.

Abstract: Wood preservatives, methods for protecting wood and wood-based products and/or structures utilizing the preservatives, and treated wood and wood-based articles and/or structures incorporating the preservatives are described. Methods are also provided for remediating structures already infected with mold. The subject wood preservative formulation includes a borate compound and a fatty acid. The addition of an emulsifier to the formulation further facilitates application of the treatment. The combination of a borate compound and fatty acid combination typically provide a synergistic effect compared to the additive result provided by the combination's individual components.

Abstract: The invention relates to a composition for treating wood comprising at least one wood preserving compound and a carrier, wherein said carrier is an emulsion or microemulsion having a water to oil ratio of greater than 30 up to 92.5 water to 7.5 to less than 70 oil, wherein the oil has a flash point above 61° C. The invention also relates to methods of treating wood with the composition.

Abstract: The invention relates to a process for impregnating wood or wood based material. A working solution is preheated to a temperature above the atmospheric boiling point (“a super hot temperature”) above the atmospheric boiling point (“a super hot temperature”) of the working solution, at an elevated pressure sufficient to maintain the working solution in the liquid phase. The working solution is contacted with a wood or wood based material at a super hot temperature and an elevated pressure to cause impregnation of the solution into the wood or wood based material. The impregnated wood or wood based material and any remaining working solution, waste material and/or by-products are then separated.

Abstract: The present invention provides wood preservative and flame retardant compositions having low leachability comprising micronized boron compounds and, optionally, one or more organic biocides which may be micronized. Also provided is a method for applying the composition to wood and wood products comprising impregnating the wood with the composition.

Abstract: A composition for surface treatment of timber and wood products that provides protection against insect damage to all surfaces without any need for a secondary insecticide treatment of one or more new, untreated surfaces generated by post-treatment processing operations including sawing, cutting, drilling, beveling, planing, sanding and/or a combination thereof, comprising one or more non-repellent insecticides.

Abstract: The proposed invention relates to a method for fluid treatment of wood comprising the steps of placing the wood in an airtight tank, evacuating the airtight tank to establish a vacuum environment for the wood, applying a fluid to the wood. Additionally, the method may further comprise the subsequent step of pressurizing the airtight tank to establish a pressurized environment for the wood. The method may further comprise the subsequent step of subjecting the wood to a subsequent heating, and/or the prior step of subjecting the wood to a prior heating by electromagnetic radiation through one or more electrodes.

Abstract: For producing a fire-resistant veneer or material composite having different core materials without adding salts or other commercial fire-retardant materials, liquid is drawn out from the pores of the veneer by heat treatment and is replaced by resin, and the veneer is, if required, subjected to a refining process.

Abstract: Wood is treated with a film-forming silicone emulsion composition, a boron compound, and a di- or trivalent metal salt. The wood can be endowed with water repellency, water absorption prevention, dimensional stability, termite control and antifungal properties without altering the appearance and quality of wood. The treatment is also effective in preventing the boron compound from being leached out in water.

Abstract: Preservative compositions for wood products are described. The compositions include at least one boron-containing material, such as but not limited to boric anhydride, and at least one silane-containing material, such as but not limited to methyltrichlorosilane. Optionally, at least one solvent, such as tetrahydrofuran, pentane, or water, may also be employed in the compositions. The compositions impart protection to the treated wood products, especially damage caused by exposure to water and insects.

Abstract: The invention is directed to the use of compositions (a) biocides, and (b) dialkylamides, for wood protection.

Abstract: The present invention relates to the use of alkoxylated amines for treating wood and other cellulose materials in order to enhance their water repellent properties and to reduce water uptake when treated wood or other cellulose materials are brought into contact with water.

Abstract: A furan polymer impregnated wood which is uniform in colour and density throughout the treated zone. In order to obtain the polymer impregnated wood, a parent wood has been impregnated with a mixture containing polymerizable organic compounds of at least furfuryl alcohol and one further compound. The invention also relates to a method for preparing a furan polymer impregnated wood and uses thereof.

Abstract: A method of delivering and retaining zinc borate within a wet process hardboard is disclosed wherein process parameters are controlled and the borate is included in the overlay slush process of wet board processing.

Abstract: Preservative composition for various materials and method of preserving the same is disclosed. The preservative composition includes at least one silane-containing material and at least one hydrocarbon solvent containing molecules of at least five carbon atoms.

Abstract: Preservative compositions for wood products are described. The compositions include at least one boron-containing material, such as but not limited to boric anhydride, and at least one silane-containing material, such as but not limited to methyltrichlorosilane. Optionally, at least one solvent, such as tetrahydrofuran, pentane, or water, may also be employed in the compositions. The compositions impart protection to the treated wood products, especially damage caused by exposure to water and insects.

Abstract: Treatment process of wood and lignocellulosic materials with an aqueous liquid that contains alkaline oxalate and benzoate, which, in contact with humid or dry wood, avoids the formation of the blue stain and stains of other colors produced by fungi. This way it avoids the strong devaluation of the stained wood and has advantages on compounds used for that aim at the present time.

Abstract: A process for treatment of wood susceptible to damage and having a length that is over the critical length with a fluid under high pressure is disclosed. The process is conducted in a way so that the fluid is not allowed to enter into the liquid form inside the wood. In one embodiment the process is performed in a way so the temperature during the pressurizing is not allowed to exceed the plastification temperature of the wood. In this embodiment the rate of damages of the wood is even further reduced.

Abstract: Process for the chemical treatment of lignocellulose materials, in particular of at least one piece of wood, characterized in that said materials are subjected to impregnation by a chemical agent comprising hydrocarbonaceous chains, this agent being chosen from mixed anhydrides, except for the mixed anhydride of acetic/benzoic acid, said agent being suitable for providing covalent grafting of a plurality of hydrocarbonaceous chains to said materials.

Abstract: A silicone emulsion composition for wood treatment is prepared by emulsifying and dispersing (A) an organopolysiloxane having at least two SiH groups, (B) a surfactant, and (C) a curing catalyst in water to form a silicone emulsion, and adding (D) a boron compound to the silicone emulsion.

Abstract: Preservative compositions for wood products are described. The compositions include at least one boron-containing material, such as but not limited to boric anhydride, and at least one silane-containing material, such as but not limited to methyltrichlorosilane. Optionally, at least one solvent, such as tetrahydrofuran, pentane, or water, may also be employed in the compositions. The compositions impart protection to the treated wood products, especially damage caused by exposure to water and insects.