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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 4112. Отображено 100.
05-01-2012 дата публикации

Hydrofluoroalkanes as carrier solvents for timber preservation

Номер: US20120003492A1
Автор: Michael Kennedy
Принадлежит: Solvents Australia Pty Ltd

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.

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Номер записи: 1
20-06-2013 дата публикации

METHOD OF TREATMENT OF WOODEN ITEMS

Номер: US20130153087A1
Автор: Bies Gary D., Emery Raymond R., Perkins Donald Martin
Принадлежит:

An improved method for the treatment of wood in preparation for manufacture of wooden items comprising the steps of first heat treating the wood and then fashioning the wood into a finished item, whereby the resulting wooden item is darker, harder, more weather and rot resistant, and more stable than items fashioned from untreated wood. 1. A method of preparing a wooden item , said method comprising the following steps:A. obtain a piece of wood;B. dry said piece of wood until said piece of wood has a moisture content of less than fifteen percent;C. place said piece of wood into an oven heated to between 150° C. and 240° C.;D. allow said piece of wood to be heated by oven for between 2 and 96 hours such that said piece of wood achieves an internal temperature of at least 150° C.; andE. remove said piece of wood from oven and allow said piece of wood to cool to substantially room temperature;whereby Steps A through E are to be performed consecutively.2Dalbergia melanoxylonMicroberlinia brazzavillensisAfzelia africanaGossweilerodendron balsamiferumTilia americanaFagus grandifoliaUlmus americanaCarpinus carolinianaPlatanus occidentalisMalus sylvestrisCupressus arizonicaAcacia melanoxylonCasuarina equisetifoliaSantalum spicatumDistemonanthus benthamianusTaxodium distichumAbies balsameaPopulus balsamiferaSwietenia macrophyllaPopulus grandidentataAlnus glutinosaFraxinus nigraPrunus serotinaKrugiodendron ferreumRobinia pseudacaciaAcer nigrumQuercus velutinaPopulus nigraPicea marianaJuglans nigraSalix nigraCastanospermum australeEucalyptus pilularisNyssa sylvaticaBrosimum paraenseFraxinus quadrangulataEucalyptus salignaCordia alliodoraAcer negundoBuxus sempervirensSwartzia tomentosaDalbergia nigraCaesalpinia echinataEucalyptus astringensGuibourtia demeuseiQuercus macrocarpaJuglans cinereaUmbellularia californicaJuglans californicaCinnamomum camphoraQuercus chrysolepisCalodendrum capenseCarapa guianensisLyonothamnus floribundusPhyllocladus aspleniifoliusCastanea ...

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Номер записи: 2
27-06-2013 дата публикации

Particulate wood preservative and method for producing same

Номер: US20130164362A1
Автор: H. Wayne Richardson, Robert L. Hodge
Принадлежит: Osmose Inc

A wood preservative includes injectable particles comprising one or more sparingly soluble copper salts. The copper-based particles are sufficiently insoluble so as to not be easily removed by leaching but are sufficiently soluble to exhibit toxicity to primary organisms primarily responsible for the decay of the wood. Exemplary particles contain for example copper hydroxide, basic copper carbonate, copper carbonate, basic copper sulfates including particularly tribasic copper sulfate, basic copper nitrates, copper oxychlorides, copper borates, basic copper borates, and mixtures thereof. The particles typically have a size distribution in which at least 50% of particles have a diameter smaller than 0.25 μm, 0.2 μm, or 0.15 μm. At least about 20% and even more than 75% of the weight of the particles may be composed of the substantially crystalline copper salt. Wood or a wood product may be impregnated with copper-based particles of the invention.

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Номер записи: 3
04-07-2013 дата публикации

WOOD TREATMENT METHOD AND APPARATUS EMPLOYING DETACHABLE BUNDLE SUPPORT

Номер: US20130171364A1
Автор: ATKINSON BRIAN, Carter J. Clayton, Carvajal Carlos, Grills Aaron, Jones Robert Eugene, Moore Jared, Nelson James Stewart, Shelton Mark Robert
Принадлежит: EASTMAN CHEMICAL COMPANY

A wood treatment method and apparatus employing a bundle support structure to support a bundle of wood during transportation and treatment of the bundle. The bundle support structure rests on a movable cart during transportation of the bundle, but is detached from the movable cart during treatment of the bundle. 1. A system for treating wood , said system comprising:a first wood treatment vessel for receiving and treating at least one bundle of wood; anda bundle transport system comprising a bundle support structure and a first externally driven cart,wherein said bundle support structure is configured to support said bundle of wood thereon,wherein said first externally driven cart is configured to transport said bundle of wood and said bundle support structure into and/or out of said first wood treatment vessel,wherein said first cart is configured to support said bundle of wood and said bundle support structure thereon during transport of said bundle of wood to said first wood treatment vessel, but not during treatment of said bundle of wood in said first wood treatment vessel.2. The system of claim 1 , wherein said first wood treatment vessel comprises a chemical modification reactor and/or a wood heater.3. The system of claim 1 , further comprising a second wood treatment vessel and a second externally driven cart claim 1 , wherein said first wood treatment vessel comprises a first door and said second wood treatment vessel comprises a second door claim 1 , wherein said first cart is operable to load said bundle of wood and said bundle support structure into said first wood treatment vessel via said first door claim 1 , wherein at least one of said first cart and said second cart is operable to unload said bundle of wood and said bundle support structure from said second wood treatment vessel via said second door.4. The system of claim 3 , wherein said first cart is operable to unload said bundle of wood and said bundle support structure from said second wood ...

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Номер записи: 4
04-07-2013 дата публикации

WOOD TREATMENT METHOD AND APPARATUS EMPLOYING BUNDLE LIFT SYSTEM

Номер: US20130171365A1
Автор: ATKINSON BRIAN, Carter J. Clayton, Carvajal Carlos, Grills Aaron, JR. Harold Dail, Kimrey, Moore Jared, Nelson James Stewart, Shelton Mark Robert
Принадлежит: EASTMAN CHEMICAL COMPANY

A wood treatment system that includes at least one wood treatment vessel and a bundle lift system for loading and unloading a bundle of wood from a cart used to transport the bundle into and/or out of the treatment vessel. The lift system vertically disengages the bundle of wood from the cart within the interior of the vessel, thereby allowing the cart to be removed from the vessel prior to initiating treatment. The lift system, which can be physically separate from or physically coupled to the cart, is entirely disposed within a lower portion of the interior volume of the wood treatment vessel. 1. A system for treating wood , said system comprising:a first wood treatment vessel for receiving at least one bundle of wood, wherein said first wood treatment vessel comprises a first door;a bundle transport system comprising a first cart for transporting said bundle of wood into and/or out of said first wood treatment vessel through said first door; anda lift system for vertically disengaging said bundle of wood from said first cart within the interior of said first wood treatment vessel.2. The system of claim 1 , wherein said first wood treatment is a chemical modification reactor and/or a wood heater.3. The system of claim 1 , wherein said lift system is disposed within the interior of said first wood treatment vessel during the vertical disengagement of said bundle from said first cart claim 1 , but not during treatment of said bundle of wood.4. The system of claim 3 , wherein said lift system is physically coupled to said first cart.5. The system of claim 1 , wherein said lift system comprises a plurality of extensible support arms claim 1 , wherein said lift system is shiftable between an extended position wherein at least a portion of said support arms are extended upwardly and a retracted position wherein at least a portion of said support arms are retracted downwardly claim 1 , wherein said lift system is configured to shift between said extended position and ...

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Номер записи: 5
21-11-2013 дата публикации

WOOD TREATING AGENT AND METHOD OF TREATING WOOD OR WOOD BASED MATERIALS OR THE LIKE

Номер: US20130309517A1
Автор: Hellkamp Sascha, Jüngel Peter, Pallaske Michael
Принадлежит: KURT OBEMEIER GMBH & CO. KG

Wood is treated with at least one photocatalytically degradable organic substance, organic compound or at least one biocide to reduce the contamination by organic substances, organic compounds and/or biocides from wood or wood-base materials into the immediate surroundings, in particular in closed spaces. The wood treatment agent contains at least one photocatalyst which brings about the degradation of the at least one organic substance, organic compound and/or the at least one biocide. The application/introduction of the at least one photocatalyst to or into the wood can take place together with or after the introduction of the wood preservation agent. 1. A wood treating agent comprising a wood preservative having at least one organic substance , organic compound , or biocide , or any combination thereof , wherein the at least one organic substance , organic compound , or biocide is photocatalytically degradable , said wood preservative including at least one photocatalyst causing degradation of the at least one organic substance , organic compound , or biocide , or any combination thereof.2. The wood treating agent of claim 1 , wherein the at least one photocatalyst includes titanium dioxide (TiO) claim 1 , carbon-doped TiO claim 1 , nitrogen-doped TiO claim 1 , or nitrogen-doped TiOhaving palladium nanoparticles.3. The wood treating agent of claim 1 , including the at least one photocatalyst being suspended in the wood preservative.4. The wood treating agent of wherein the particle size of the at least one photocatalyst is in the range of 10 to 30×10nm claim 1 , 100 to 5×10nm claim 1 , or 150 to 3×10nm.5. The wood treating agent of claim 3 , wherein the proportion of the at least one photocatalyst in the wood preservative is in the range of 1×10to 10% by weight claim 3 , 0.5 to 5% by weight claim 3 , or 1 to 3% by weight.6. The wood treating agent of wherein the at least one biocide contains:one or more fungicides selected from the group consisting of: triazoles, ...

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Номер записи: 6
20-03-2014 дата публикации

AN ADDITIVE-RESIN ADMIXTURE, METHODS OF TREATING A WOOD PRODUCT, A REACTION PRODUCT OF AN ADDITIVE AND A WOOD PRODUCT, AND A WOOD PRODUCT

Номер: US20140079955A1
Автор: Harrup Mason K., Rollins Harry W.
Принадлежит: BATTELLE ENERGY ALLIANCE, LLC

An additive comprising a phosphazene compound that has at least two reactive functional groups and at least one capping functional group bonded to phosphorus atoms of the phosphazene compound. One of the at least two reactive functional groups is configured to react with cellulose and the other of the at least two reactive functional groups is configured to react with a resin, such as an amine resin or a polycarboxylic acid resin. The at least one capping functional group is selected from the group consisting of a short chain ether group, an alkoxy group, and an aryloxy group. Also disclosed are an additive-resin admixture, a method of treating a wood product, and a wood product. 1. An additive-resin admixture , comprising:an additive admixed with a resin, the additive comprising a phosphazene compound comprising at least two reactive functional groups and at least one capping functional group bonded to phosphorus atoms of the phosphazene compound, one of the at least two reactive functional groups configured to react with cellulose, another of the at least two reactive functional groups configured to react with the resin, and one of the at least one capping functional group selected from the group consisting of a short chain ether group, an alkoxy group, an aryloxy group, an amine group, and a thioether group.2. The additive-resin admixture of claim 1 , wherein the resin comprises an amine resin or a polycarboxylic acid resin.3. The additive-resin admixture of claim 2 , wherein the amine resin comprises melamine claim 2 , urea claim 2 , guanidine claim 2 , benzoguanidine claim 2 , or combinations thereof.4. The additive-resin admixture of claim 2 , wherein the amine resin comprises a melamine-formaldehyde resin claim 2 , a urea-formaldehyde resin claim 2 , a melamine-urea resin claim 2 , or a melamine-urea-formaldehyde resin.5. The additive-resin admixture of claim 2 , wherein the polycarboxylic acid resin comprises aldaric acid claim 2 , oxalic acid claim 2 , ...

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Номер записи: 7
03-04-2014 дата публикации

FIRE RETARDANT COMPOSITION AND METHOD FOR TREATING WOOD

Номер: US20140093742A1
Автор: Saari Kimmo
Принадлежит: FP WOOD OY

The present invention provides an aqueous fire retardant composition comprising phosphoric acid, ammonium, diammonium phosphate, ammonium sulfate, urea, and a complexing agent. The present invention also provides a method for treating wood, and wood obtained by said method. 1. An aqueous fire retardant composition comprising phosphoric acid , ammonium , diammonium phosphate , ammonium sulfate , urea , and a complexing agent.2. The composition of claim 1 , comprising a charring agent.3. The composition of claim 1 , comprising an intumescent agent selected from guanidine claim 1 , guanidine hydrochloride claim 1 , glycine and further water-soluble amino acids and derivatives thereof.4. The composition of claim 2 , wherein the charring agent is selected from glycerol claim 2 , zinc borate claim 2 , aluminum hydrate claim 2 , aluminum trihydrate claim 2 , dextrin claim 2 , inositol claim 2 , amylase claim 2 , water-soluble polysaccharides claim 2 , pentaerythritol claim 2 , dipentaerythritol and polyalcohols5. The composition of claim 1 , comprising trisodium citrate.6. The composition of claim 1 , comprising monoammonium phosphate.7. The composition of claim 1 , comprising guanidine sulfamate.8. The composition of claim 1 , comprising a surfactant.9. The composition of claim 1 , comprising slag.10. The composition of claim 1 , comprising potassium chloride.11. The composition of claim 1 , wherein the complexing agent is selected from EDTA claim 1 , EGTA claim 1 , nitrilotriacetic acid claim 1 , diethylene pentaacetic acid claim 1 , dodecane tetraacetic acid and salts thereof.12. The composition of claim 1 , containing5-10% (w/v) phosphoric acid,5-10% (w/v) ammonium sulfate,15-20% (v/v) ammonia,13-20% (w/v) diammonium phosphate,3-5% (w/v) urea, and0.5-1.5% (w/v) complexing agent in aqueous solution.13. The composition of claim 1 , containing2.5-7.5% (w/v) phosphoric acid,2.5-7.5% (w/v) ammonium sulfate,15-20% (v/v) ammonia,13-20% (w/v) diammonium phosphate,3-5% (w/v) ...

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Номер записи: 8
07-01-2016 дата публикации

COMPOSITIONS COMPRISING UNSATURATED FATTY ESTERS AND USES THEREOF

Номер: US20160000090A1
Автор: Murray Gordon
Принадлежит: Stella-Jones Inc.

Disclosed is a wood preservative composition comprising creosote and/or pentachlorophenol (PCP) and one or more unsaturated fatty esters. The composition is useful for reducing insect and microbial decay in wood. Further disclosed are methods of making and using such a composition and wood treated with such a composition. 1. A composition comprising:i) about 85 to 99 wt % creosote; and{'sub': 10', '50, 'ii) about 1 to 15 wt % of a fatty ester component, which comprises greater than 90 wt % of one or more C-Cunsaturated fatty esters.'}219-. (canceled)20. A composition comprising:i) about 1 to 20 wt % pentachlorophenol;ii) about 65 to 98 wt % diesel; and{'sub': 10', '50, 'iii) about 1 to about 15 wt % of one or more C-Cunsaturated fatty esters.'}21. The composition of claim 1 , comprising about 3 to 10 wt % of the fatty ester component and at least about 90 wt % of the creosote.22. The composition of claim 1 , wherein the composition is substantially free of C-Csaturated fatty esters.23. The composition of claim 1 , wherein the C-Cunsaturated fatty esters comprise one or more polyunsaturated fatty esters.24. The composition of claim 1 , wherein the C-Cunsaturated fatty esters comprise C-Cunsaturated fatty esters.25. The composition of claim 1 , wherein the unsaturated fatty esters are C-Calkyl esters.26. The composition of claim 1 , wherein the unsaturated fatty esters comprise methyl esters.27. The composition of claim 1 , further comprising about 1 to 15 wt % of an ester of boric acid.28. The composition of claim 27 , wherein the compositions comprises about 1 to 5 wt % of the ester of boric acid.29. The composition of claim 27 , wherein the ester of boric acid comprises a monoethanolamine ester of boric acid.30. The composition of claim 1 , wherein the composition has an open-cup flashpoint of at least 66° C.31. The composition of claim 1 , wherein the composition is a substantially homogenous solution at a temperature of about 15° C. to about 35° C. for up to one ...

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Номер записи: 9
02-01-2020 дата публикации

METHOD OF MANUFACTURING OSB WITH EXTRUDED POLYMER BANDS

Номер: US20200002945A1
Автор: LINE JARROD KEVIN
Принадлежит:

A system for introducing a noise-dampening polymer in-line in the manufacturing process of a manufactured wood product to achieve higher acoustic performance in siding, sheathing, roofing, flooring, and similar applications using the manufactured wood product. Several lines or bands of the noise-dampening polymer are deposited transversely across one side or face of the product. The polymer is deposited where the product is expected to contact joists or studs. The polymer may be a viscoelastic polymer. 1. A method of producing a wood product with acoustic dampening properties , comprising the steps of:applying a noise-dampening polymer to a plurality of locations on a back face of a manufactured wood product;wherein the plurality of locations comprise a plurality of linear areas parallel to each other and a first edge of the product; andfurther wherein the plurality of linear areas are spaced at a series of pre-determined distances from the first edge and each other, said spacing selected to correspond to an end-use application with a particular spacing of joists, studs, or other flooring or framing support elements.2. The method of claim 1 , wherein the plurality of linear areas comprise an area proximate the first edge claim 1 , and an area proximate a second edge claim 1 , wherein the second edge is opposite and parallel to the first edge.3. The method of claim 1 , wherein the plurality of locations further comprise locations between the plurality of linear areas.4. The method of claim 1 , wherein the polymer is applied in a continuous line in each linear area.5. The method of claim 1 , wherein the polymer is applied intermittently in each linear area.6. The method of claim 1 , wherein the plurality of linear areas are spaced at multiples of 16 inches claim 1 , 24 inches claim 1 , or 48 inches from the first edge.7. The method of claim 1 , wherein the plurality of linear areas are spaced at multiples of 16 inches or 24 inches from the first edge.8. The method of ...

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Номер записи: 10
14-01-2016 дата публикации

Composition and Method of Manufacture of Hardened Wood

Номер: US20160009000A1
Автор: Sanderson Brian Matthew
Принадлежит:

There is a hardened wood composition, comprising an acetylated whole wood portion that may have substantially all of its accessible interior volume impregnated with a hardened thermosetting plastic. A method of manufacturing a hardened wood comprising the steps of: acetylating a whole wood portion and impregnating the whole wood portion with a liquid-phase thermosetting polymer then curing such thermosetting polymer impregnated porous body by the steps of: enclosing the body in a fluid impermeable bag and subjecting the enclosed body to enhanced fluid pressure substantially, contemporaneously, with subjecting the enclosed body to a temperature sufficient to cure the thermosetting plastic impregnated therein by submerging the same in water near its boiling point. 1. A method of manufacturing a hardened wood comprising the steps of acetylating a whole wood portion and impregnating the whole wood portion with a liquid-phase thermosetting polymer.2. A method of curing a thermosetting polymer impregnated porous body comprising the steps of enclosing the body in a fluid impermeable membrane and subjecting the enclosed body to enhanced fluid pressure as compared to pressure immediately surrounding the body substantially contemporaneously with subjecting the enclosed body interior to the membrane to a temperature sufficient to cure the thermosetting plastic impregnated therein.3. The method of claim 3 , wherein the membrane is a plastic bag and the fluid. pressure and temperature is applied by submerging the enclosed body in water near but below boiling temperature.4. The method of claim 3 , wherein the membrane includes a material selected from the group of materials consisting of silicone claim 3 , rubber claim 3 , neoprene claim 3 , and biaxially-oriented polyethylene terephthalate. This application is a Divisional Application of under 35 U.S.C. §121, and claims priority to, under 35 U.S.C. §121, U.S. Non-Provisional application Ser. No. 14/183,824, entitled Composition ...

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Номер записи: 11
08-01-2015 дата публикации

SINGLE STEP CREOSOTE/BORATE WOOD TREATMENT

Номер: US20150010768A1
Автор: Murray Gordon
Принадлежит:

Disclosed herein are preservative compositions and methods of using the same for reducing insect and microbial decay in wood. Also disclosed are wooden articles that have been treated with the compositions described herein. 13-. (canceled)4. A wood treatment composition formed by blending components comprising:(1) at least about 3% w/w of a reaction product of alkanolamine and borate; and(2) at least about 90% w/w creosote;wherein the borate comprises disodium octaborate tetrahydrate (DOT).5. The wood treatment composition of claim 4 , wherein the alkanolamine comprises a monoalkanolamine.6. The wood treatment composition of claim 4 , wherein the alkanolamine comprises a C-Cmonoalkanolamine.7. The wood treatment composition of claim 4 , wherein the alkanolamine comprises monoethanolamine.8. The wood treatment composition of claim 4 , wherein the blending is carried out at an elevated temperature such that substantially all water has been removed from the composition.9. The wood treatment composition of claim 8 , wherein the composition comprises at least about 95% w/w creosote and is greater than 98% w/w free of water.10. The wood treatment composition of claim 4 , wherein the creosote comprises heavy bunker C fuel oil.11. The wood treatment composition of claim 10 , wherein the creosote comprises about 40 to 60% w/w heavy bunker C fuel oil.12. The wood treatment composition of claim 4 , wherein at least about 40% w/w of the borate is disodium octaborate tetrahydrate (DOT).13. The wood treatment composition of claim 4 , wherein the borate comprises disodium octaborate tetrahydrate (DOT) and boric acid.14. The wood treatment composition of claim 4 , wherein the reaction product is prepared by reacting the borate with the alkanolamine in water.15. The wood treatment composition of claim 4 , wherein the reaction product comprises unreacted borate.16. The wood treatment composition of claim 4 , wherein the composition further comprises biodiesel.17. The wood treatment ...

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Номер записи: 12
14-01-2021 дата публикации

METHODS FOR ENHANCING THE PRESERVATION OF CELLULOSIC MATERIALS AND CELLULOSIC MATERIALS PREPARED THEREBY

Номер: US20210008755A1
Автор: Brimhall Daniel
Принадлежит: American Chemet Corporation

Methods for treating cellulosic materials comprising introducing a liquid treating composition into the cellulosic material, the treating composition comprising a solution prepared from at least: (i) one or more of a copper amine complex or copper ammine complex, such as copper tetraamine carbonate, (ii) one or more of ammonia or a water-soluble amine and (iii) water; and exposing the cellulosic material provided thereby to carbon dioxide and/or carbonic acid to provide treated cellulosic material, and treated cellulosic materials prepared thereby. 177.-. (canceled)78. A method for treating cellulosic material comprising:(a) introducing the cellulosic material to be treated into a vessel;(b) introducing a treating composition into the vessel in an amount sufficient to immerse the cellulosic material therein, and thereafter providing a pressure within the vessel for a time sufficient to permit the treating composition to permeate the cellulosic material, wherein the treating composition is an aqueous alkaline copper containing solution comprising about 0.01 wt. % to about 10 wt. % copper tetraammine carbonate, the treating composition optionally further comprising one or more of an insecticide, mold inhibitor, algaecide, bactericide, water repellant, colorant or corrosion inhibitor;(c) removing from the vessel any treating solution not introduced into the cellulosic material after immersion;(d) introducing carbon dioxide into the vessel; and(e) removing the treated cellulose material from the vessel,wherein the cellulosic material is Southern Pine, Douglas Fir, Hem Fir or Spruce-Pine Fir.79. The method according to claim 78 , wherein the treating composition comprises about 0.05 wt. % to about 5 wt. % copper tetraammine carbonate.80. Treated cellulosic material prepared according to claim 78 , wherein the copper content in the treated cellulosic material is about 0.01 to about 0.3 lbs/ft.81. The treated cellulosic material of claim 80 , wherein the copper leaching of ...

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Номер записи: 13
16-01-2020 дата публикации

Process for wood oil modification of wood products

Номер: US20200016785A1
Автор: Reeta-Maria STÖD, Tommy MARKOFF
Принадлежит: STORA ENSO OYJ

The present invention relates to a process for preparing a modified wood product wherein the wood is impregnated with water-based wood oils. In one embodiment, the wood is thermally modified prior to the impregnation. The present invention also relates to a modified wood product produced using said process.

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Номер записи: 14
26-01-2017 дата публикации

Functionalized Polyorganosiloxanes Or Silanes For The Treatment Of Lignocellulosic Materials

Номер: US20170022390A1
Автор: Delis Johannes Gerardus Petrus, Hermann Jörg-Walter, Hoffmüller Gunnar, Käsler Karl-Heinz, Klaassen Egbert, Mai Carsten, Militz Holger, Pries Malte, Sockel Karl-Heinz, Stachulla Karl-Heinz, Wagner Roland
Принадлежит:

The present invention relates to functionalized polyorganosiloxanes or silanes for the treatment of lignocellulosic materials. 116-. (canceled)18: The polyorganosiloxanes or silanes according to claim 17 , characterized in that the radicals Rare selected from the group of the radicals Rand R claim 17 , wherein the radicals Rare such radicals R claim 17 , which include functional groups F and wherein the radicals Rare such radicals Rwhich do not include functional groups F.19: The polyorganosiloxanes according to claim 17 , characterized in that the molar content of the radicals R claim 17 , which comprise at least one functional group F claim 17 , is from 3.33 to 100 mol-% claim 17 , based on the number of siloxy units.20: The polyorganosiloxanes according to claim 17 , characterized in that the molar content of branched radicals T and Q is 0 to 50% claim 17 , based on the number of siloxy units.21: The polyorganosiloxanes according to claim 17 , characterized in that the average number of siloxy units is 2 to 30.28: Compositions comprising{'claim-ref': {'@idref': 'CLM-00017', 'claim 17'}, 'claim-text': zwitterionic group,', 'carboxylic acid, carboxylate group,', 'sulfonic acid, sulfonate group,', 'sulfuric acid half-ester, sulfate group,', 'phosphoric ester, phosphate group', 'phosphonic ester, phosphonate group,', 'phosphorous ester, phosphite group,, 'a) at least one of a polysiloxane and a silane as defined in , having a functional group F selected from the group consisting of 'b) at least one of a polysiloxane and a silane having a basic functional group selected from amino groups, ammonium groups, phosphonium groups and phosphine groups.', 'and'}29: A process for treating lignocellulosic material claim 17 , comprising applying the polysiloxane or silane of to lignocellulosic material by a procedure selected from the group consisting of surface treatment claim 17 , immersion treatment claim 17 , or vacuum or pressure impregnation.30: A process for treating ...

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Номер записи: 15
24-01-2019 дата публикации

Flame-Treated Drum and Method of Treatment

Номер: US20190022890A1
Автор: Alldred Ben, Kelly Bryan, Talas Jason
Принадлежит:

A wooden drum shell that is treated by direct heating by exposure to a flame to alter the state of fibers in an outer layer of the drum shell relative to the untreated drum shell or inner fibers below the outermost layer. A method of manufacturing a treated drum shell includes selecting a wooden starting material, forming an untreated drum shell from the starting material, and exposing the drum untreated drum shell directly to a flame. 1. A method of manufacturing a treated wooden drum shell from an untreated drum shell starting material having a wooden exterior surface , comprising exposing the exterior surface of the untreated drum shell to a flame , thereby altering wood fibers in an outer layer of the treated drum shell relative to the untreated drum shell to form a protective armor layer.2. The method of claim 1 , wherein the untreated drum shell includes an exterior surface made from oak.3. The method of claim 1 , wherein the wood fibers are altered at least partially via crystallization of sap resin present in the wood on the exterior surface.4. The method of claim 1 , wherein the flame has a temperature of at least 1400 degrees Fahrenheit.5. The method of claim 1 , wherein the flame has a temperature within the range of approximately 1900 degrees Fahrenheit to approximately 2010 degrees Fahrenheit.6. The method of claim 1 , including the steps of(a) selecting a starting material made from wood;(b) forming the starting material into an untreated drum shell with a wooden outer surface; and(c) treating the untreated drum shell by exposing the exterior surface to a flame having a temperature within the approximate range of 1400 degrees Fahrenheit to 2500 degrees Fahrenheit to produce the treated drum shell having a protective armor.7. The method of claim 6 , wherein the untreated drum shell defines a central axis claim 6 , and step (c) of treating the untreated drum shell comprises exposing the exterior surface directly to a flame by reciprocating the untreated ...

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Номер записи: 16
31-01-2019 дата публикации

COMPOSITIONS AND METHODS FOR TREATING CELLULOSE-BASED MATERIALS WITH MICRONIZED ADDITIVES

Номер: US20190030748A1
Автор: Leach Robert M., ZHANG JUN
Принадлежит:

A composition for treating cellulosic materials is provided. The composition comprises a dispersion of micronized additives. The dispersion comprises additive particles with diameters in the range of 0.001 to 25 microns. Also provided is a method for the application of the additive-containing composition to wood, as well as wood products which have been treated with the composition. 1. Wood comprising:a) an aqueous composition comprising one or more solid particles of an additive dispersed in water having diameters in the range of 0.001 to 25 microns;b) wherein at least some of the particles penetrate the surface of the wood and are distributed throughout a cross section of the wood; andc) wherein the additive is carbon black or black iron oxide; and greater than 80 weight percent of the particles have diameters less than 1 micron.2. Wood treated by a process comprising the steps of:a) providing an aqueous composition comprising one or more solid particles of a first additive and a second additive dispersed in water, said particles having diameters in the range of 0.001 to 25 microns; andb) applying said composition to the wood such that at least some of the particles penetrate the surface of the wood and are distributed throughout a cross section of the wood;wherein the first additive is carbon black or black iron oxide; greater than 80 weight percent of the particles of the first additive have diameters less than 1 micron; and the second additive is zinc oxide, titanium dioxide, or an aluminum flake pigment;wherein the first and second additives are applied to the wood by pressure treatment, vacuum treatment, or both; andwherein the wood comprises solid particles of the first and second additives inside the wood.3. Wood of claim 2 , wherein said aqueous composition further comprises one or more additives selected from the group consisting of inorganic pigments claim 2 , organic pigments claim 2 , water repellants claim 2 , anti-weathering agents claim 2 , and ...

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Номер записи: 17
04-02-2021 дата публикации

FIRE-RESISTANT WOODEN PRESSURE BOARD AND THE PRODUCTION METHOD THEREOF

Номер: US20210031401A1
Автор: PAN Dewang
Принадлежит: ZHEJIANG YANMU TECHNOLOGY CO., LTD.

A fire-resistant wooden pressure plate is formed by conducting a cold pressing of 2-10 MPa to the uniformly mixed not less than 50 wt % of a wood-containing powder material and an additive. The additive may include metallic oxide, non-metallic oxide, hydrochloride, sulfate, phosphate, weak acid, and strong acid. With class-A fire resistance, in-water rotting resistance, class- mold resistance, little or no detectable formaldehyde, some products described herein can replace traditional plates incapable of resisting fire in the following fields: 1. wooden veneer, wooden door, furniture, kitchenware, etc.; 2. wooden wall, base course, ground foundation, suspended ceiling, etc.; 3. wooden flooring; 4. wooden fire-resistant door, fire-resistant wall, etc.; 5. wooden house, wooden bench, wooden bulletin plate, wooden billboard, walkway paving, etc.; 6. wood handicrafts, toys, etc. 1. A fire-resistant wooden pressure plate , characterized in that the fire-resistant wooden pressure plate is formed by conducting a cold pressing of 2˜10 megapascals (MPa) to the uniformly mixed not less than 50 wt % of a wood powder material and an additive , wherein the additive includes a metallic oxide , a non-metallic oxide , a hydrochloride , a sulfate , a phosphate , a weak acid , and a strong acid.2. The fire-resistant wooden pressure plate according to claim 1 , characterized in that the fire-resistant wooden pressure plate's density is 0.8˜4.6 g/cm claim 1 , and moisture content is 5˜25 wt % claim 1 , and expansion rate of water absorption of 24 h is 5% or less claim 1 , and static bending strength is 15˜50 MPa claim 1 , and internal bond strength is 0.5˜8 MPa claim 1 , and elastic modulus is 3000˜12000 claim 1 , and screw-holding force of board surface is 650˜2000 N.3. The fire-resistant wooden pressure plate according to claim 2 , characterized in that the fire-resistant wooden pressure plate's fireproof rating is class A claim 2 , and the amount of released formaldehyde reaches the ...

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Номер записи: 18
06-02-2020 дата публикации

Composition and method of manufacturing the same

Номер: US20200039106A1
Автор: Kukkonen Jari, Nissinen Timo
Принадлежит:

Fire retardant composition for treatment of various wood products, method of producing the same and uses thereof. The compositions comprise an aqueous solution of bisphosphonate selected from 1-hydroxyethane 1,1-diphosphonic acid, an alkanol amine, and optionally an alkaline agent, the composition having a pH in the range of 4.0 to 7.0. The composition can be produced by mixing together 30 to 50 parts by weight of 1-hydroxyethane 1,1-diphosphonic acid; 1 to 10 parts by weight of an alkanol amine or mixture thereof, said alkanol amine being added in free form; and optionally 0.1 to 40 part by weight of an alkaline agent; and water. The compositions can be used for protecting wood not only against fire but also against mould, rot, blue stain, insect such as termite attacks on wood, dimensional changes, or a combination thereof due to environmental influence. 1. A fire retardant composition for treatment of wood products , comprising an aqueous solution of a mixture or a reaction product of a bisphosphonic acid and an alkanol amine , and optionally an alkaline agent , said composition having a pH in the range of 3.0 to 9.0.2. The composition according to claim 1 , wherein at least 75 mole-% of the alkanol amine is added in free form.3. The composition according to claim 1 , wherein the composition comprises a bisphosphonate present in the aqueous solution in acid form claim 1 , and wherein at least 50 mole-% of the bisphosphonate is present in acid form.4. The composition according to claim 1 , comprising 0.1 to 50% by weight of 1-hydroxyethane 1 claim 1 ,1-diphosphonic acid claim 1 , optionally in mixture with other bisphosphonates claim 1 , organic phosphonates or the mixtures thereof claim 1 , calculated from an amount of dissolved components of the composition.5. The composition according to claim 1 , wherein the composition comprises:0.1 to 70% by weight of 1-hydroxyethane 1,1-diphosphonic acid, or a mixture of 1-hydroxyethane 1,1-diphosphonic acid and/or other ...

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Номер записи: 19
16-02-2017 дата публикации

MINERALIZED WOOD MATERIALS AND METHODS PROVIDING MINERALIZED WOOD MATERIALS

Номер: US20170043497A1
Автор: BURGERT Ingo, CHANANA Munish, MERK Vivian
Принадлежит: ETH Zurich

The invention relates to a mineralized wood material comprising at least one metal salt MA in the lumina of the mineralized wood material, in particular in the lumina and the cell walls of the mineralized wood material and methods for providing said mineralized wood material. 1. A mineralized wood material comprising at least one metal salt of the formula MA in the lumina of the mineralized wood material , in particular in the lumina and the cell walls of the mineralized wood material.2. The mineralized wood material according to claim 1 , wherein the at least one metal salt MA comprises a weight in the range of 5 wt % to 40 wt % with respect to the weight of the unmineralized wood material.3. The mineralized wood material according to claim 1 , whereinM is selected from multivalent metals, in particular from earth alkali metals, more particularly from magnesium, barium or calcium andA is selected from organic or inorganic compounds, in particular from inorganic compounds, more particularly from sulfate, carbonate, borate, fluoride or phosphate.4. A method for treatment of a wood material comprising the steps of:a) provision of a metal salt solution comprising at least one metal salt of the formula MX dissolved in a solvent and a salt solution comprising at least one salt of the formula YA dissolved in another solvent, an impregnation cycle comprising a first impregnation step using one of said solutions and a subsequent second impregnation step using the other one of said solutions, or', 'a diffusion step comprising a diffusion of the metal salt solution from one side and a diffusion of the salt solution from the other side into the wood material,, 'b) treatment of said wood material by'}providing a precipitation of a metal salt of the formula MA inside the wood material, whereinthe solvents of the metal salt solution and the salt solution are characterized in that the metal salt MA has a low or almost no solubility in said solvents, in particular the metal salt MA ...

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Номер записи: 20
19-02-2015 дата публикации

PROCESS FOR THE ACETYLATION OF WOOD AND ACETYLATED WOOD

Номер: US20150050483A1
Автор: Alexander Jonathan Philip, Bongers Hendrikus Petrus Maria, Pol Bernardus Jozef Maria
Принадлежит: TITAN WOOD LIMITED

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. 1. A process for the acetylation of wood comprising the steps:(a) in a reaction pressure vessel submerging wood having a moisture content of less than 5% by weight in an acetylation fluid comprising acetic anhydride and/or acetic acid at a temperature of 10° C. to 120° C.,(b) increasing the pressure in the vessel to 2 to 20 bar for a period of 1 to 300 minutes,(c) removing excess acetylation fluid from the vessel,(d) introducing into the vessel an inert fluid, circulating and heating the fluid until the internal temperature of the wood begins to show an exotherm, controlling the supply of heat to the wood until the exotherm is complete and maintaining the internal temperature of the wood below 180° C.,(e) heating the circulating fluid to a temperature of 85° C. to 160° C. for a time of 10 to 120 minutes to initiate a second exothermic reaction, controlling the supply of heat to the wood until the exotherm is complete and maintaining the internal temperature of the wood below 180° C.,(f) removing the circulating fluid by evaporation under vacuum.2. The process according to claim 1 , wherein the wood to be treated has an ovendry density of above 400 kg/mand preferably above 500 kg/m.3. The process according to claim 1 , wherein the wood is Southern Yellow Pine or Scots pine.4. The process according to claim 1 , wherein the moisture content of the wood is from 1 to 4% by weight.5. The process according to ...

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Номер записи: 21
08-05-2014 дата публикации

Functionalized Polyorganosiloxanes Or Silanes For The Treatment Of Lignocellulosic Materials

Номер: US20140127523A1
Автор: Delis Johannes Gerardus Petrus, Hermann Jörg-Walter, Hoffmüller Gunnar, Käsler Karl-Heinz, Klaassen Egbert, Mai Carsten, Militz Holger, Pries Malte, Sockel Karl-Heinz, Stachulla Karl-Heinz, Wagner Roland
Принадлежит: MOMENTIVE PERFORMANCE MATERIALS GMBH

The present invention relates to functionalized polyorganosiloxanes or silanes for the treatment of lignocellulosic materials. 116-. (canceled)18. The polyorganosiloxanes or silanes according to claim 17 , characterized in that the radicals Rare selected from the group of the radicals Rand R claim 17 , wherein the radicals Rare such radicals R claim 17 , which include functional groups F and wherein the radicals Rare such radicals Rwhich do not include functional groups F.19. The polyorganosiloxanes according to claim 17 , characterized in that the molar content of the radicals R claim 17 , which comprise at least one functional group F claim 17 , is from 3.33 to 100 mol-% claim 17 , based on the number of siloxy units.20. The polyorganosiloxanes according to claim 17 , characterized in that the molar content of branched radicals T and Q is 0 to 50% claim 17 , based on the number of siloxy units.21. The polyorganosiloxanes according to claim 17 , characterized in that the average number of siloxy units is 2 to 30.27. Compositions comprising{'claim-ref': {'@idref': 'CLM-00017', 'claim 17'}, '(a) at least one polysiloxane and/or silane, as defined in , and'} 'for the treatment of lignocellulosic materials.', '(b) at least one of a solvent and a biocidal agent'}29. A process for treating lignocellulosic material claim 17 , comprising applying the polysiloxane or silane of to lignocellulosic material by a procedure selected from the group consisting of surface treatment claim 17 , immersion treatment claim 17 , or vacuum or pressure impregnation.30. A process for treating lignocellulosic material claim 27 , comprising applying the composition of to lignocellulosic material by a procedure selected from the group consisting of surface treatment claim 27 , immersion treatment claim 27 , or vacuum or pressure impregnation.31. A process for reducing degradation of wood by termites comprising impregnating the wood with the polysiloxane or silane of .32. A process for reducing ...

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Номер записи: 22
13-02-2020 дата публикации

METHODS FOR ENHANCING THE PRESERVATION OF CELLULOSIC MATERIALS AND CELLULOSIC MATERIALS PREPARED THEREBY

Номер: US20200047370A1
Автор: Brimhall Daniel
Принадлежит: American Chemet Corporation

Methods for treating cellulosic materials comprising introducing a liquid treating composition into the cellulosic material, the treating composition comprising a solution prepared from at least: (i) one or more of a copper amine complex or copper amine complex, such as copper tetraamine carbonate, (ii) one or more of ammonia or a water-soluble amine and (iii) water; and exposing the cellulosic material provided thereby to carbon dioxide and/or carbonic acid to provide treated cellulosic material, and treated cellulosic materials prepared thereby. 177.-. (canceled)78. A method for treating cellulosic material comprising:(a) introducing the cellulosic material to be treated into a vessel;(b) introducing a treating composition into the vessel in an amount sufficient to immerse the cellulosic material therein, and thereafter providing a pressure within the vessel of about 1 to about 300 psi, wherein the treating composition is an aqueous alkaline copper-containing solution comprising about 0.01 wt. % to about 10 wt. % copper tetraammine carbonate, the treating composition optionally further comprising one or more of an insecticide, mold inhibitor, algaecide, bactericide, water repellant, colorant or corrosion inhibitor,(c) removing from the vessel any treating solution not introduced into the cellulosic material after immersion for about 1 to about 300 minutes by pulling a vacuum within the vessel of up to about 30 in. Hg for about 1 to about 60 minutes;(d) introducing carbon dioxide into the vessel and thereafter maintaining the pressure in the vessel at no more than about 10 psi, wherein the carbon dioxide is resident in the vessel for about 1 to about 60 minutes; and(e) removing the treated cellulose material from the vessel.79. The method according to claim 78 , wherein the treating composition comprises about 0.05 wt. % to about 5 wt. % copper tetraammine carbonate.80. The method according to claim 78 , wherein the vessel pressure in step (b) is from about 75 psi ...

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Номер записи: 23
03-03-2016 дата публикации

Manufacturing Method for a High Durability, High Insulating Composite Timber Member and a Composite Timber Member

Номер: US20160059436A1
Автор: Borg Finn, Kristensen Lars Højmann
Принадлежит:

The present invention describes a method for thermo-treatment of wood, where said method comprises the following steps: 1. Manufacturing method for obtaining a high durability , high insulating composite timber member , where said method comprises the following steps:a. Introducing wood to be treated into a treatment unit;b. Increasing the temperature and/or pressure to a first elevated level inside the treatment unit and maintaining said first elevated temperature for a pre-determined period of time;c. Decreasing the temperature and/or pressure to a certain lower level for a certain predetermined period of time;d. Retrieving and storing the treated wood.2. The manufacturing method according to where said method comprises the following steps:a1) selecting the wood to be treated to be as free from knots as possibleb1) in step b) introducing the wood to a temperature increase, said first elevated temperature level being in the range of 170° C. to 175° C.;c1) maintaining the wood at an ambient temperature in the range of 170° C. to 175° C. for between 45 minutes and up to 6 hours;d1) in step c) decreasing the temperature to said lower level in the range of approx. 20° C. to 60° C.;e1) before step d) introducing the wood into an autoclave or if the treatment unit is suitable, and applying a mixture of linseed oil and mineral oil to the wood, and allowing the mixture to penetrate the wood.3. The method according to wherein before or at the same time as step b claim 1 , replacing the air and vapor inside the treatment chamber with an inert gas.4. The method according to wherein the pressure of the inert gas introduced into the treatment unit is maintained at a pressure higher than the vapor pressure inside the wood to be treated.5. The method according to wherein the pressure of the inert gas introduced into the treatment unit is maintained at a pressure higher than the boiling point of the water in the wood.6. The method according to wherein the pressure of the inert gas ...

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Номер записи: 24
21-02-2019 дата публикации

MANUFACTURING APPARATUS FOR DELAMINATING BAMBOO INTO FIBER AND METHOD THEREOF

Номер: US20190054649A1
Автор: LIN Maoyang, YAO Wenbing, Yao Yao, Zhou Chao
Принадлежит:

A manufacturing apparatus for delaminating a bamboo into fiber and a method thereof are disclosed. The manufacturing apparatus includes a machine frame, a machine seat, a machine cover matched with the machine seat, a machine cover rail, a push plate, a push rail, at least one power source for sliding the push plate, and at least one elastic member. The manufacturing apparatus has a relatively simple structure and is easy for operation, use, and promotion. The manufacturing method using the manufacturing apparatus is simple in production process, high in efficiency, and free from pollution. The obtained bamboo fiber has good elasticity, good toughness, fine fiber fineness and uniformity, that is, the present invention can quickly and efficiently produce high-quality bamboo fiber, greatly saving the production time of bamboo fiber, improving the production efficiency, and reducing the production cost. 1. A manufacturing apparatus for delaminating a bamboo into fiber , comprising a machine frame , a machine seat , a machine cover matched with the machine seat , a machine cover rail , a push plate , a push rail , at least one power source for sliding the push plate , and at least one elastic member;the machine seat being disposed at a middle portion of the machine frame, a top of the machine seat being provided with a plurality of juxtaposed grooves and a first heating assembly, the first heating assembly being embedded in the machine seat and located under the grooves; a bottom of the machine cover being provided with a plurality of ribs and a second heating assembly, the ribs corresponding in position and in number to the grooves, the second heating assembly being embedded in the machine cover and located above the ribs;the machine cover rail and the push rail being arranged on the machine frame respectively, the machine cover being slidably fitted on the machine cover rail, a left side of the machine cover being a curved surface, the curved surface having a radius ...

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Номер записи: 25
29-05-2014 дата публикации

WOOD PRESERVATIVE FORMULATION

Номер: US20140147691A1
Автор: Bagaric Drago, Hausler Peter, Hrastov Angelo, Humphrey David, Jensen Greg, Justice Troy, Koch Steve, Koskela Noel, McFarling Shane, Skewes Brett
Принадлежит: ARCH WOOD PROTECTION PTY LTD

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/myet 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. 1. A preservative formulation for treating wood or other cellulosic materials , said formulation comprising:at least one biocidal metal compound;at least one preservative; andan aqueous carrier being water,one or more water-miscible co-solvents,{'sup': '3', 'wherein said preservative formulation has an uptake in the sapwood of less than about 220 L/mand achieves substantially full sapwood penetration thereby facilitating maintenance of dimensional stability of the wood or other cellulosic materials being treated.'}2. A formulation according to claim 1 , wherein said preservative formulation has an uptake in the sapwood of less than about 150 L/m claim 1 , or in the range of about 70 to about 150 L/m.3. A formulation according to claim 1 , wherein said preservative formulation has an uptake in the sapwood of less than about 120 L/m.4. A formulation according to claim 3 , wherein said preservative formulation has an uptake in the sapwood of less than about 100 L/m.5. A formulation according to claim 4 , wherein said preservative formulation has an uptake in the sapwood of less than about 80 L/m.6. A formulation according to claim 1 , wherein said metal compound is a compound of a metal selected from the group consisting of: copper claim 1 , aluminium claim 1 , manganese claim 1 , iron claim 1 , cobalt claim 1 , nickel claim 1 , zinc claim 1 , silver claim 1 , cadmium claim 1 , tin claim 1 , antimony claim 1 , mercury claim 1 , ...

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Номер записи: 26
15-03-2018 дата публикации

WOOD DRYING AND PRESERVATION METHODS

Номер: US20180071944A1
Автор: Alley Nigel J., Curran Seamus, Haldar Amrita, Liao Kang-Shyang, Maharjan Surendra
Принадлежит: UNIVERSITY OF HOUSTON SYSTEM

The new methods for treating green wood discuss herein speed up air drying of common green wood, including both softwood and hardwood. This method involves treating and altering the green wood with a base solution, and subjecting the wood to an air drying process. The new methods require less time to dry the green wood to a desired water content. In addition, other additives may be included in the base solution such as miscibility solvent(s), preservative(s), solubilizer(s)/stabilizer(s), chelating agent(s), bonding agent(s), pigment(s), UV protective, anti-oxidant, anti-fungal, anti-microbial and/or anti-insect chemical(s). The base solution solution may also slow down the wood deterioration caused by physical, chemical and biological sources under ambient conditions. 1. A method for treating green wood , the method comprising:treating the green wood with a first solution, wherein the first solution comprises at least one miscibility solvent and a solubilizer or a stabilizer; andair drying the green wood after treating the green wood with the first solution.2. The method of claim 1 , wherein the miscibility solvent is selected from Acetone claim 1 , Acetonitrile claim 1 , tent-Butanol claim 1 , Carbon tetrachloride claim 1 , Chloroform claim 1 , Cyclohexane claim 1 , Cyclopentane claim 1 , Dichloromethane claim 1 , Diethyl ether claim 1 , Ethanol claim 1 , Ethyl acetate claim 1 , Ethyl ether claim 1 , Ethylene dichloride claim 1 , Heptane claim 1 , n-Hexane claim 1 , Methanol claim 1 , Methylene chloride claim 1 , Methyl tent-butyl ether claim 1 , Pentane claim 1 , Petroleum ethers claim 1 , Isopropanol claim 1 , n-Propanol claim 1 , Tetrahydrofuran or a mixture thereof.3. The method of claim 2 , wherein the solubilizer or the stabilizer is selected from at least one alkoxysilane claim 2 , metal oxide precursor or a combination thereof having a general formula of M(OR)(M=Si claim 2 , Al claim 2 , Ti claim 2 , In claim 2 , Sn or Zr) claim 2 , where R comprises ...

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Номер записи: 27
07-03-2019 дата публикации

Process for Producing Wood-Based OSBs Having Reduced Emission of Volatile Organic Compounds (VOCs)

Номер: US20190070747A1
Автор: KALWA Norbert, Pfeiffer Sabrina
Принадлежит:

A process for treating wood strands suitable for producing OSBs includes treating the wood strands in water at a temperature in the range from 50° C. to 100° C. The present invention likewise relates to a process for producing wood-based OSBs, in particular wood-based OSBs having reduced emission of volatile organic compounds (VOCs), including: a) production of wood strands from suitable timbers; b) treatment of at least part of the wood strands with water; c) drying of the wood strands which have been treated with the water; d) coating of the wood strands which have been treated with water and dried and coating of wood strands which have not been treated with water with at least one binder; e) scattering of the glue-coated wood strands on a conveyor belt; and f) pressing of the glue-coated wood strands to give a wood-based OSB. 1. A process for treating wood strands suitable for producing OSBs , comprising:treating wood strands in water having a temperature in the range from 50° C. to 100° C.2. The process according to claim 1 , wherein the treatment of the wood strands with water is carried out for a time of from 10 to 60 minutes.3. The process according to claim 1 , wherein the wood strands are covered completely by the water during the treatment.4. The process according to claim 1 , wherein the wood strands are conveyed continuously on at least one transport device through an apparatus containing the water for the water treatment.5. The process according to claim 4 , comprising discharging the water from the apparatus after passage of the wood strands.6. The process according to claim 5 , comprising purifying the water discharged from the apparatus and recirculating the purified water into the apparatus.7. An apparatus for treating wood strands with water according to claim 1 , comprising:at least one vessel filled with water;at least one transport device for transporting the wood strands through the vessel; andat least one apparatus for dipping the wood strands ...

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Номер записи: 28
05-06-2014 дата публикации

PRESERVATION OF WOOD, COMPOSITIONS AND METHODS THEREOF

Номер: US20140154419A1
Автор: Stark Joseph L.
Принадлежит: APINEE, INC.

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. 1. A composition for preserving wood comprising:a prepolymer comprising from about 4 wt % to about 20 wt % of the total composition; anda nonionic surfactant mixture comprising alkylpolyglycosides and ethoxylated alcohols;{'sub': 'w', 'wherein the pre-polymer has weight average molecular weight (MW) in the range of from about 125 to about 400 such that the pre-polymer impregnates wood with pressures from about atmospheric to about 15 psig.'}2. The composition of wherein the pre-polymer comprises a phenol-formaldehyde prepolymer.3. The composition of wherein the nonionic surfactant mixture comprises monodecyl ether derivatives of linear alkoxylates and C12-C15 ethoxylated alcohols.4. The composition of wherein the pre-polymer comprises a water soluble prepolymer in aqueous base.5. The composition of wherein the pre-polymer has weight average molecular weight (MW) in the range of from about 125 to about 300 such that the pre-polymer impregnates the wood with pressures from about atmospheric to about 10 psig.6. The composition of wherein the pre-polymer has weight average molecular weight (MW) in the range of from about 125 to about 200 such that the pre-polymer impregnates the wood with pressures from about atmospheric to about 5 psig.7. The composition of wherein the pre-polymer has weight average molecular weight (MW) in the range of from about 125 to about 140 such that the pre-polymer impregnates the wood with pressures from about atmospheric to about 1 psig.8. The composition of wherein the pre-polymer comprises from about 5 wt % to about 10 wt % of the composition.9. A method of ...

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Номер записи: 29
18-03-2021 дата публикации

SYSTEMS AND METHODS FOR DRYING WOOD PRODUCTS

Номер: US20210078199A1
Автор: CRONDAHL Michael, GOLLMANN Christian
Принадлежит:

Systems and methods for treating wood products are provided. The methods comprise preconditioning the wood product by irradiating one or more surfaces of the wood product with infrared (IR) and/or ultraviolet (UV) radiation and subsequently treating the wood product. The systems comprise one or more fixtures positioned to irradiate one or more surfaces of the wood product with IR and/or UV radiation, wherein each fixture comprises a reflector and a radiation source. 1. A method for treating a wood product , the method comprising:preconditioning the wood product by irradiating one or more surfaces of the wood product with infrared (IR) and/or ultraviolet (UV) radiation; andsubsequently treating the wood product.2. The method according to claim 1 , wherein the one or more surfaces of the wood product is first irradiated with IR radiation and subsequently irradiated with UV radiation.3. The method according to claim 1 , wherein the one or more surfaces of the wood product is first irradiated with UV radiation and subsequently irradiated with IR radiation.4. The method according to claim 1 , wherein the one or more surfaces of the wood product is irradiated with IR radiation and UV radiation simultaneously.5. The method according to claim 1 , wherein the one or more surfaces of the wood product is irradiated with IR and/or UV radiation for a time sufficient to distribute moisture throughout the wood product and/or the one or more surfaces of the wood product.6. The method according to claim 1 , wherein one or more areas of the one or more surfaces of the wood product is irradiated with IR and/or UV radiation for a time sufficient to distribute moisture throughout the wood product and/or the one or more surfaces of the wood product.7. The method according to claim 1 , wherein subsequently treating the wood product comprises one or more of drying claim 1 , heating claim 1 , curing claim 1 , coating claim 1 , and pressure-treating.8. The method according to claim 1 , ...

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Номер записи: 30
22-03-2018 дата публикации

METHOD FOR CONTINUOUS ACETYLATION OF WOOD ELEMENTS

Номер: US20180079104A1
Автор: Benstead Stephen John, KAPPEN Theodorus Gerardus Marinus Maria
Принадлежит:

The present invention relates to a method for continuous acetylation of wood elements. The acetylation is conducted with an acetylation medium at a pressure of at least 1.5 barg in a substantially oxygen free environment. Alternatively, the method according to the invention comprises the steps of: (a) feeding wood elements in a substantially oxygen free environment to a continuous acetylation reactor, and (b) treating the wood elements with an acetylation medium in the continuous acetylation reactor under wood acetylation reaction conditions, at a pressure of at least 1.5 barg. 1. Method for continuous acetylation of wood elements , wherein the acetylation is conducted with an acetylation medium under wood acetylation reaction conditions at a pressure of at least 1.5 barg in a substantially oxygen free environment.2. Method for continuous acetylation of wood elements comprising the steps of:(a) feeding wood elements in a substantially oxygen free environment to a continuous acetylation reactor,(b) treating the wood elements with an acetylation medium in the continuous acetylation reactor under wood acetylation reaction conditions, at a pressure of at least 1.5 barg.3. The method according to claim 2 , wherein the oxygen content in the acetylation reactor is less than 0.8 vol. %.4. The method according to claim 2 , wherein the oxygen content of the wood elements fed to the acetylation reactor is less than 0.8 vol. %.5. The method according to claim 1 , comprising removing oxygen from the wood elements before the acetylation reaction claim 1 , preferably by applying vacuum level of 100 mbar or less to the wood elements.6. The method according to claim 2 , wherein the acetylation medium is supplied to the reactor in both gaseous and liquid form.7. The method according to claim 6 , wherein the liquid is contacted with the wood elements claim 6 , preferably by spraying.8. The method according to claim 5 , wherein the wood elements after the removal of oxygen are brought ...

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Номер записи: 31
23-03-2017 дата публикации

LOW ODOR CREOSOTE-BASED COMPOSITIONS AND USES THEREOF

Номер: US20170080595A1
Автор: Murray Gordon
Принадлежит: Stella-Jones Inc.

Provided is a wood treatment composition comprising a reaction product produced by reacting a mixture, which includes creosote and a fatty ester component, in the presence of a Lewis acid catalyst. The reaction mixture may optionally include bunker oil and/or a borate ester. The mixture may comprise i) at least about 85 wt % creosote; and ii) at least about 1 wt % of an ester component containing one or more C-Cfatty esters. Also provided are wood treated with the composition and methods for using the composition to treat wood. 1. A wood treatment composition comprising a reaction product produced by reacting a mixture in the presence of a Lewis acid catalyst , wherein the mixture comprisesi) at least about 85 wt % creosote; and{'sub': 8', '50, 'ii) at least about 1 wt % of an ester component containing one or more C-Cfatty esters.'}2. The composition of claim 1 , wherein the composition comprises at least about 90 wt % of the reaction product.3. The composition of claim 1 , wherein the mixture is reacted in the presence of the Lewis acid catalyst at a temperature of at least about 120° F. (−50 ° C.)/150° F. (−65° C.).4. The composition of any of claim 1 , wherein the composition has a headspace volatile organic compounds (VOC) concentration at 70° C. of no more than about 100μg/m.5. The composition of claim 1 , wherein the composition has a headspace naphthalene concentration at 70° C. of no more than about 10 μg/m.6. The composition of claim 1 , having an open-cup flashpoint of at least 66° C.7. The composition of claim 1 , wherein the C-Cfatty esters are alkyl esters of C-Cfatty acids.8. The composition of claim 1 , wherein the ester component comprises at least about 50 wt % alkyl esters of C-Cfatty acids.9. The composition of claim 1 , wherein the ester component comprises at least about 90 wt % methyl esters of capric acid claim 1 , lauric acid claim 1 , myristic acid claim 1 , palmitic acid claim 1 , stearic acid and/or oleic acid.10. The composition of claim ...

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Номер записи: 32
12-03-2020 дата публикации

WOOD MARKING AND IDENTIFICATION

Номер: US20200080986A1
Автор: Cavender Stephen Edward, Greene Richard Wayne, Haugen Barry Dean
Принадлежит:

Wood markers and processes for durably marking and subsequently identifying both original grain wood products and wood-plastic composite products. The wood marker can be dispersed beneath the surface of the wood, where it is protected from the elements and may endure years of exposure to the elements. The wood marker is compatible with state-of-the-art pressure-treating processes and may subsequently be detected for authentication purposes by known analytical methods. 1. A composition of matter , comprising:a marker composed of a carboxylate of a metal cation in which the metal is selected from the group consisting of non-biocidal metals having an atomic number in the range of 12 to 83 and mixtures thereof, and a carboxylate anion that includes about 6 to about 18 carbon atoms.2. The composition of claim 1 , in which the selected metal is in Period 3 claim 1 , Period 4 claim 1 , or Period 5 of the Periodic Table of the elements.3. The composition of claim 1 , in which the wood is Southern Yellow Pine.4. The composition of claim 1 , in which the marker is dispersed within the wood.5. The composition of claim 1 , in which the marker is selected from the group consisting of a bismuth carboxylate claim 1 , cobalt carboxylate claim 1 , lithium carboxylate claim 1 , manganese carboxylate claim 1 , zirconium carboxylate claim 1 , and mixtures thereof.6. The composition of claim 1 , in which the selected metal is a rare earth metal or a mixture of rare earth metals.7. The composition of claim 1 , in which the marker is fluorescent when excited by x-ray radiation.8. The composition of claim 1 , further comprising one or more biocidal metals.9. A process for authenticating a wood product claim 1 , comprising: a disperse marker phase composed of a carboxylate of a metal cation in which the metal is selected from the group consisting of non-biocidal metals selected from the group consisting of non-biocidal metals having an atomic number in the range of 12 to 83 and mixtures ...

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Номер записи: 33
21-03-2019 дата публикации

Methods and systems for impregnating wood with a polymer solution and products thereof

Номер: US20190084181A1
Автор: TRAN HOAI Nam
Принадлежит:

The present disclosure relates, according to some embodiments, to methods and systems for impregnating wood with a polymer solution and products thereof. In some embodiments, the present disclosure relates to a method of processing a wood piece to generate a wood product, the method comprising: (a) placing the wood piece into a reactor having a chamber pressure of a vacuum environment; (b) exposing the wood piece to a polymer solution; (c) performing an iterative process where each cycle of the iterative process comprises a pressurizing period during which the chamber pressure is increased to an increased chamber pressure and a stabilizing period during which the chamber pressure is monitored to measure a chamber pressure decrease, if any; (d) when the decrease of chamber pressure during the stabilizing period is less than or equal to the certain threshold change, normalizing the reactor chamber to a normalized pressure; and (e) setting the wood piece to generate the wood product. The present disclosure further relates to a wood product generated by a method of processing a wood piece. 1. A wood product generated by a method of processing a wood piece , the method comprising:(a) placing the wood piece into a reactor having a chamber pressure of a vacuum environment;(b) exposing the wood piece to a polymer solution; (i) increasing the chamber pressure during the pressurizing period by a value less than or equal to a maximum pressure change to the increased chamber pressure for the cycle;', '(ii) monitoring the chamber pressure during the stabilizing period to determine a magnitude of the chamber pressure decrease, if any, from the increased chamber pressure for the cycle;', '(iii) if the decrease of chamber pressure during the stabilizing period for the cycle is more than a certain threshold range, repeat these steps (i) through (iii);, '(c) performing an iterative process where each cycle of the iterative process comprises a pressurizing period during which the ...

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Номер записи: 34
21-03-2019 дата публикации

Solvent-borne wood preservative compositions

Номер: US20190084182A1
Автор: Jun Zhang, Md S. Islam
Принадлежит: Koppers Performance Chemicals Inc

Wood preservative compositions comprising a particulate copper compound in a solvent carrier with low aromatic content. Particulate copper dispersions in this composition demonstrated superior stability, and wood treated with the composition is protected from attack by wood decay fungi and termites. The invention is also directed to wood preservative compositions comprising: (a.) a biodegradable organic solvent carrier selected from the group consisting of vegetable oil, renewable resource oil, and biodiesel; (b.) a dispersion of solid particles of a metal compound having a particle size between about 0.005 microns to about 10 microns; (c.) an organic biocide; and (d.) a dispersant; ratio of the dispersant to the metal compound is from about 1:500 to about 100:1 (wt/wt). The invention is also directed to compositions comprising penflufen and solvent carriers. The invention is also directed to methods of treating wood using the compositions, and wood treated with the disclosed compositions and methods.

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Номер записи: 35
30-03-2017 дата публикации

Treatment of hardwood articles with copper and/or zinc wood preservatives

Номер: US20170087739A1
Автор: Norman Timothy CAREY, Randall Thomas BAILEYS, Roger Franklin FOX
Принадлежит: ARCH WOOD PROTECTION, INC.

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

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Номер записи: 36
05-04-2018 дата публикации

METHOD FOR THE ACETYLATION OF WOOD

Номер: US20180093390A1
Автор: KAPPEN Theodorus Gerardus Marinus Maria, Marissal Daniel
Принадлежит:

The present invention provides a method for the acetylation of wood comprising treating the wood with an acetylation medium under wood acetylation reaction conditions and drying the acetylated wood, wherein the drying comprises at least two steps, wherein the wood is first dried with a first drying medium and then with a second drying medium. 1. A method for the acetylation of wood comprising treating the wood with an acetylation medium under wood acetylation reaction conditions and drying the acetylated wood , wherein the drying comprises at least two steps , wherein the wood is first dried with a first drying medium and then with a second drying medium.2. The method according to claim 1 , wherein the first drying medium has a higher heat capacity than the second drying medium.3. The method according to claim 1 , wherein the first drying medium comprises an acetylation medium vapour.4. The method according to claim 1 , wherein the second drying medium is an inert gas claim 1 , preferably nitrogen.5. The method according to claim 1 , wherein the acetylation reaction conditions comprise a pressure of at least 1 barg.6. The method according to claim 1 , wherein the drying in the first and/or the second step is carried out at a pressure lower than the acetylation reaction pressure.7. The method according to claim 1 , wherein the acetylation medium comprises acetic acid claim 1 , acetic anhydride or a mixture thereof.8. The method according to claim 4 , wherein the acetylation medium comprises a mixture of acetic acid and acetic anhydride claim 4 , preferably comprising at least 50 wt. % claim 4 , more preferably at least 85 wt. % of acetic anhydride.9. The method according to claim 1 , wherein the acetylation conditions comprise heating to a temperature in the range 160-190° C.10. The method according to claim 1 , wherein the drying temperature in either one or both of the drying steps is in the range 150-190° C.11. The method according to claim 1 , wherein in the ...

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Номер записи: 37
14-04-2016 дата публикации

METHOD FOR PRODUCING BOG (BLACK) OAK WOOD

Номер: US20160101539A1
Автор: Grigas Vytautas
Принадлежит: UAB "GRIGO"

The present invention implements a method to produce stained oak, having features identical or very close to a bog (black) oak wood found in wetlands. This method is based on the reaction of iron with the tannin present in the wood, and it comprises the following steps: placing the wood blank into a metal container; filling the container with water (or other suitable solvent), so that all the blanks are submersed; blending iron oxide into the solvent and producing the solution of iron oxide of a suitable concentration; heating the container to the desired temperature between 60 to 100 degrees Celsius; maintaining the temperature of the container for a certain period of time, depending on the dimensions of the blanks; compensating the water that was lost during the process due to evaporation by adding an additional amount of water; after the determined period of time or when the desired shade of wood (black, gray, blue, purple, or brown) is achieved and/or the desired density is reached; stopping the heating process and discharging the water from the tank; washing the blanks; drying the blanks in sawdust or using other desiccation means; and/or drying the blanks in convection or vacuum dryer, or using other similar means, until a needed moisture content is reached. 1. A method of producing wood having properties similar to bog oak wood , the method comprising:a) immersing a piece of wood in a solution comprising iron oxide and a solvent;b) retaining the piece of wood immersed in the solution, at a temperature between 60 and 100° C., until a moisture content of 50-80 percent in the piece of wood of is achieved;c) washing the piece of wood with water, after the piece of wood has been immersed in and processed with the solution; andd) drying the piece of wood after washing.2. The method according to claim 1 , wherein the drying the piece of wood after washing comprises drying the piece of wood in sawdust until a 30 percent moisture content in the piece of wood is ...

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Номер записи: 38
13-04-2017 дата публикации

Efficient Infrared Absorption System for Edge Sealing Medium Density Fiberboard (MDF) and Other Engineered Wood Laminates Using Powder and Liquid Coatings

Номер: US20170100730A1
Автор: Chapman Michael J
Принадлежит:

The present invention has to do with an efficient system for coating and curing engineered wood products (EWP) in general, and the edges of EWPs in particular. An efficient system for coating and curing coatings is provided. 113-. (canceled)14. A focused infrared apparatus for curing a primer coated edge , the apparatus comprising:at least one focused infrared (IR) emitter assembly, wherein the at least one focused IR emitter assembly is adaptable to emit IR energy substantially matched to a predetermined absorption characteristic of the primer; andwherein, the at least one focused IR emitter assembly is adaptable to emit a focused IR energy pattern substantially focused on the primer coated edge.15. The focused infrared apparatus as in wherein the at least one focused IR emitter assembly is adaptable to emit a focused IR energy pattern comprising substantially a 60 degree arc.16. The focused infrared apparatus as in wherein the at least one focused IR emitter assembly comprises:a pair of infrared emitters;a transmission medium, wherein the transmission medium comprises quartz glass; and 'a gold coating reflector.', 'a reflector, wherein the reflector comprises17. The focused infrared apparatus as in wherein the at least one focused IR emitter assembly comprises:a pair of infrared emitters;a transmission medium, wherein the transmission medium comprises quartz glass; and 'an opaque quartz glass reflector.', 'a reflector, wherein the reflector comprises18. An apparatus for edge curing engineered wood products (EWP) with trailing and leading edges and supported by a conveyor track claim 14 , the apparatus comprising: a first plurality of infrared emitters for emitting an IR energy field;', 'a first reflector adaptable to reflect the IR energy field emitted by the first plurality of IR emitters;, 'a first infrared (IR) emitter assembly, wherein the first infrared emitter assembly comprises a second plurality of infrared emitters for emitting an IR energy field;', 'a ...

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Номер записи: 39
04-04-2019 дата публикации

WOOD PIGMENT COMPOSITIONS AND WOOD TREATMENT PROCESSES

Номер: US20190099913A1
Автор: Islam Md Sayful, ZHANG JUN
Принадлежит:

Disclosed herein are compositions and methods for treating wood to give it a desirable color that is durable over time, while at the same time rendering the wood resistant to fungal decay and insect attack. The wood may be pressure treated in a two-step process whereby the wood is first treated with a wood preservation composition, and then treated with a composition comprising pigments, or vice versa. Alternatively, the wood may be simultaneously treated with a composition comprising a wood preservative and a composition comprising pigments. 197-. (canceled)98. A method of treating a wood substrate comprising the steps of:{'sub': '2', '(a) contacting said wood substrate with a wood pigment composition comprising an aqueous composition comprising: (i) solid micronized particles of carbon black; (ii) solid micronized particles of titanium dioxide (TiO); (iii) a polymeric additive having a glass transition temperature (Tg) of less than about 100° C.; and (iv) a dispersant;'}wherein said micronized particles of carbon black and said micronized particles of titanium dioxide have diameters in the range of 0.001 to 25 microns, and the ratio of carbon black to titanium dioxide is between about 1000:1 to about 1:1000 (wt/wt); and(b) subjecting said wood substrate to pressure treatment.99. A method of treating a wood substrate comprising the steps of:(a) contacting said wood substrate with a wood pigment composition comprising an aqueous composition comprising: (i) solid micronized particles of carbon black; (ii) solid micronized particles of zinc oxide (ZnO); (iii) a polymeric additive having a glass transition temperature (Tg) of less than about 100° C.; and (iv) a dispersant;wherein said micronized particles of carbon black and said micronized particles of zinc oxide have diameters in the range of 0.001 to 25 microns, and the ratio of carbon black to zinc oxide is between about 1000:1 to about 1:1000 (wt/wt); and(b) subjecting said wood substrate to pressure treatment.100 ...

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Номер записи: 40
23-04-2015 дата публикации

LIGNOCELLULOSE PRESERVATIVE COMPOSITION, PROCESS USING SUCH COMPOSITION, PRESERVED LIGNOCELLULOSIC MATERIAL OBTAINABLE BY SUCH PROCESS AND PRODUCT COMPRISING SUCH MATERIAL

Номер: US20150111056A1
Автор: GOSSELINK Richard Johannes Antonius, Teunissen Wouter, Van Dam Jan Evert Gerard
Принадлежит: Stichting Dienst Landbouwkundig Onderzoek

The invention relates to a lignocellulose preservative composition comprising in the range of from 50 to 98 wt % of a pyrolysis oil obtainable by pyrolysis of lignocellulosic material, a polymerisable furan compound and a catalyst for polymerising the furan compound in a catalytically effective amount. The invention further relates to a process for producing preserved lignocellulosic material comprising impregnating lignocellulosic material by immersion in such composition and subsequently curing the impregnated material and to preserved lignocellulosic material obtainable by such process and to an engineered wood or non-wood product comprising such lignocellulosic material. 115-. (canceled)16. A lignocellulose preservative composition , comprising:(a) 50 to 98 wt % of a pyrolysis oil obtainable by pyrolysis of lignocellulosic material;(b) a polymerisable furan compound; and(c) a catalytically effective amount a catalyst for polymerising the furan compound.17. The lignocellulose preservative composition according to claim 16 , wherein the catalyst is selected from the group consisting of anhydrides claim 16 , acids claim 16 , chlorides and combinations thereof.18. The lignocellulose preservative composition according to claim 16 , wherein the polymerisable furan compound is furfuryl alcohol.19. The lignocellulose preservative composition according to claim 16 , comprising catalyst from 1 to 30 wt % claim 16 , based on the weight of furan compound.20. The lignocellulose preservative composition according to claim 16 , comprising 70 to 90 wt % of the pyrolysis oil.21. A lignocellulose preservative composition according to claim 16 , comprising 10 to 40 wt % furan compound claim 16 , based on the total weight of the composition.22. A lignocellulose preservative composition according to claim 16 , wherein the pyrolysis oil is obtainable by fast or flash pyrolysis of lignocellulosic material.23. A process for producing preserved lignocellulosic material claim 16 , ...

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Номер записи: 41
02-04-2020 дата публикации

METHOD FOR CONTINUOUS ACETYLATION OF WOOD ELEMENTS

Номер: US20200101635A1
Автор: Benstead Stephen John, KAPPEN Theodorus Gerardus Marinus Maria
Принадлежит:

The disclosure relates to a method for continuous acetylation of wood elements. The acetylation is conducted with an acetylation medium at a pressure of at least 1.5 barg in a substantially oxygen free environment. Alternatively, the method includes the steps of: (a) feeding wood elements in a substantially oxygen free environment to a continuous acetylation reactor, and (b) treating the wood elements with an acetylation medium in the continuous acetylation reactor under wood acetylation reaction conditions, at a pressure of at least 1.5 barg. The process can acetylate wood elements to a high acetyl content in an efficient way, without compromising on the quality of the material. The acetylated wood elements can be used in the production of medium density fibreboards with superior qualities such as dimensional stability and durability. 1. Method for continuous acetylation of wood elements, wherein the acetylation is conducted with an acetylation medium under wood acetylation reaction conditions at a pressure of at least 1.5 barg in a substantially oxygen free environment. This application is a continuation of U.S. Ser. No. 15/565,310, filed Oct. 9, 2017, which in turn is a 371 of PCT/EP2016/058150.This disclosure relates to the field of wood acetylation. Particularly, the disclosure provides a method for continuous acetylation of wood elements.It has been known in the art to chemically modify wood with the aim to improve its service life and particularly to acetylate wood. Thereby materials with improved material properties, e.g. dimensional stability, hardness, durability, are obtained.In the art, it is known to use batch processes, i.e. non steady state processes for the acetylation of wood particles. Such processes, however, often lead to poor product uniformity as the properties differ significantly during the cycle of each batch and potentially from batch to batch. Since long term steady state conditions are not established, no two batches can ever be ...

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Номер записи: 42
10-07-2014 дата публикации

Methods of treating wood with preservatives using supercritical noble gases

Номер: US20140193587A1
Автор: Gregory D. Phelan, William B. Carlson
Принадлежит: EMPIRE TECHNOLOGY DEVELOPMENT LLC

Disclosed are methods and compositions pertaining to the preservation of wood using one or more noble gasses in conjunction with wood preservatives.

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Номер записи: 43
10-07-2014 дата публикации

COMPOSITIONS AND METHODS FOR TREATING CELLULOSE-BASED MATERIALS WITH MICRONIZED ADDITIVES

Номер: US20140193634A1
Автор: Leach Robert M., ZHANG JUN
Принадлежит: Osmose, Inc.

A composition for treating cellulosic materials is provided. The composition comprises a dispersion of micronized additives. The dispersion comprises additive particles with diameters in the range of 0.001 to 25 microns. Also provided is a method for the application of the additive-containing composition to wood, as well as wood products which have been treated with the composition. 18-. (canceled)9. A process for treating wood , said process comprising the steps of:a) providing an aqueous composition comprising one or more solid particles of an additive dispersed in water having diameters in the range of 0.001 to 25 microns; andb) applying said composition to wood such that at least some of the particles penetrate the surface of the wood and are distributed throughout a cross section of the wood;wherein the additive is zinc oxide, titanium dioxide, or an aluminum flake pigment; greater than 80 weight percent of the particles have diameters less than 1 micron; and the additive is applied to the wood by pressure treatment, vacuum treatment, or both.1015-. (canceled)16. A process as in claim 9 , wherein said aqueous composition further comprises an additive which is carbon black or black iron oxide.17. A process as in claim 16 , further comprising performing the step a) by grinding said additives into micronized form.18. Wood treated by the process of claim 16 , wherein said wood comprises solid particles of said additives inside the wood claim 16 , wherein said particles have diameters in the range of from 0.001 to 25 microns.19. Wood as in claim 18 , wherein said aqueous composition further comprises one or more additives selected from the group consisting of inorganic pigments claim 18 , organic pigments claim 18 , water repellants claim 18 , anti-weathering agents claim 18 , dimensional stabilization agents claim 18 , and fire retardants.20. (canceled)21. Wood comprising:a) an aqueous composition comprising one or more solid particles of an additive dispersed in ...

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Номер записи: 44
26-04-2018 дата публикации

Process of Improving the Dimensional Stability of Wood and Dimensional Stabile Wood Thereof

Номер: US20180111286A1
Автор: Sanghi Kavita
Принадлежит:

The present invention describes a process of improving the dimensional stability of wood and a dimensionally stable wood thereof. The said process is governed by contacting a composition comprising resin, catalyst and dye with a wood in a closed container followed by evacuating the air from the chamber and creating a vacuum. It is further treated with a composition comprising resin and dye followed by vacuum treatment during the contact step for at least 2 hours followed by a resting period and further treated in a temperature of approximately 100 degrees Celsius for about 1 hour and 30 minutes in order to obtain the desired wood. 1. A process of improving the dimensional stability of wood , wherein the said process comprising the steps ofa) contacting a composition comprising resin, catalyst and dye with a wood in a closed container;b) applying vacuum treatment to the wood of step (a) during the contact step for at least 2 hours;c) resting the wood of step (b) at a room temperature for at least 48 hours;d) contacting the wood of step (c) with the composition comprising resin and dye followed by vacuum treatment during the contact step for at least 2 hours;e) resting the wood of step (d) at a room temperature for at least 24 hours;f) treating the said wood of step (e) with heat of at least 100 degree Celsius for approximately 1 hrs 30 minutes followed by gradually decreasing of heat for about 6 hours in order to obtain the desired wood of improved dimensional stability; wherein the said wood has a size at least 1.5 mm diameter greater than the diameter of the wood used in step (a).2. The process as claimed in claim 1 , wherein the catalyst to the Resin is in the range of 2.1 gm/lit to 2.3 gm/lit.3. The process as claimed in claim 1 , wherein the said resin preferably used is Resinol 90C.4. The process as claimed in claim 1 , wherein the dye used is selected from the group of oil soluble dyes.5. The process as claimed in claim 4 , wherein the dye used is selected as ...

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Номер записи: 45
09-06-2022 дата публикации

PROCESS FOR THE ACETYLATION OF WOOD AND ACETYLATED WOOD

Номер: US20220176585A1
Автор: Alexander Jonathan Philip, Bongers Hendrikus Petrus Maria, Pol Bernardus Jozef Maria
Принадлежит:

A process for acetylation of wood having a density of above 400 kg/m, particularly, of Southern Yellow Pine, 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. 1. A process for the acetylation of wood comprising the steps:{'sup': '3', '(a) in a reaction pressure vessel submerging wood having a moisture content from 1 to 4% by weight and an oven dry density of above 500 kg/min an acetylation fluid comprising acetic anhydride and/or acetic acid at a temperature of 10° C. to 120° C.,'}(b) increasing the pressure in the vessel to 2 to 20 bar for a period of 1 to 300 minutes,(c) removing excess acetylation fluid from the vessel,(d) introducing into the vessel an inert fluid, circulating and heating the fluid until the internal temperature of the wood begins to show a first exothermic reaction, controlling the supply of heat to the wood until the first exothermic reaction is complete and maintaining the internal temperature of the wood below 180° C.,(e) heating the circulating fluid to a temperature of 85° C. to 160° C. for a time of 10 to 120 minutes to initiate a second exothermic reaction, controlling the supply of heat to the wood until the second exothermic reaction is complete and maintaining the internal temperature of the wood below 180° C., such that the acetylation fluid contains reaction products of an acetylation reaction,(f) removing the acetylation fluid containing the reaction products of acetylation by evaporation under vacuum.2. The process according to claim 1 , wherein the wood is Southern Yellow Pine or Scots pine.3. The process according to claim 1 , wherein the acetylation fluid in which the wood is submerged comprises from 70% to 100% by volume of ...

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Номер записи: 46
27-04-2017 дата публикации

Biocide Concentrate Composition for the Addition to Oil-Based Formulations, and Compositions Containing the Same

Номер: US20170112135A1
Автор: Kimberlee Thompson, Roger FOX
Принадлежит: Arch Wood Protection Inc

Disclosed is a biocide concentrate composition to be incorporated into oil-based formulations useful for the treatment and preservation of wood. Also disclosed are oil-based biocide compositions and creosote based biocide compositions.

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Номер записи: 47
27-04-2017 дата публикации

TREATED POROUS MATERIAL

Номер: US20170113373A1
Автор: Chen Xue, King Stephen W.
Принадлежит:

The present disclosure describes 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 an ol-efin-carboxylic acid copolymer; and a modifying agent comprising an epoxy. 1. 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 an olefin-carboxylic acid copolymer; anda modifying agent comprising an epoxy.2. The treated cellulosic material of claim 1 , wherein at least a portion of the carboxylic acid groups of the copolymer are neutralized.3. The treated cellulosic material of claim 1 , wherein the olefin-carboxylic acid copolymer comprises claim 1 , in polymerized form claim 1 , a monomer selected from the group comprising ethylene claim 1 , propylene claim 1 , 1-butene claim 1 , 3-methyl-1-butene claim 1 , 4-methyl-l-pentene claim 1 , 3-methyl-l-pentene claim 1 , 1-heptene claim 1 , 1-hexene claim 1 , 1-octene claim 1 , 1-decene claim 1 , 1-dodecene claim 1 , butadiene claim 1 , styrene claim 1 , (meth)acrylic acid claim 1 , maleic acid claim 1 , maleic anhydride claim 1 , or a mixture thereof.4. (canceled)5. The treated cellulosic material of claim 1 , wherein the polymer comprises one or more polymers in addition to the olefin-carboxylic acid copolymer.6. The treated cellulosic material of claim 1 , wherein the modifying agent is an aromatic or aliphatic glycidyl ether or a glycidyl amine or a cycloaliphatic epoxy.7. The treated cellulosic material of claim 1 , wherein the modifying agent comprises a polyglycidyl ether of polyhydric alcohol claim 1 , polyglycidyl ether of polyhydric phenol claim 1 , polyglycidyl amine claim 1 , polyglycidyl amide claim 1 , polyglycidyl imide claim 1 , polyglycidyl hydantoin claim 1 , polyglycidyl thioether claim 1 , ...

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Номер записи: 48
13-05-2021 дата публикации

Method for Reinforcing and Enhancing Bamboo/Wood Materials

Номер: US20210138684A1
Автор: Pan Xin, Wang Jin, Xu Manping, Yu Haixia, Zhang Wenfu, Zhuang Xiaowei
Принадлежит:

A method for reinforcing and enhancing bamboo/wood materials employs a sulfuric acid hydrolysis method to prepare a nanocellulose dispersion solution; then with the nanocellulose dispersion solution having a certain concentration as a precursor, nano zinc oxide is in-situ produced on the surface of the nanocellulose; and the cellulose dispersion solution is improved by compounding. The obtained treatment solution is impregnated into the pores of bamboo/wood materials in a specific manner to play the role of filling, binding and consolidating the bamboo/wood tissues, so that the treated bamboo/wood materials have enhanced hardness, strength and dimension stability, and significantly-improved mildew- and corrosion-resistance. The method is suitable for the reinforcing and enhancing treatment of wood materials with relatively-loose texture, such as fast-growing wood and wood from a planted forest, and is also suitable for the reinforcement and restoration of slightly-rotten wood materials. 1. A method for reinforcing and enhancing bamboo/wood materials , comprising:(1) preparation of a nanocellulose dispersion A: mixing fibers derived from cotton wool or cotton linter with a sulfuric acid solution having a concentration of 60% to 70%, and conducting reaction under a 40° C. to 60° C. water bath for 30 min to 40 min; then adding an 8 to 10 fold volume of distilled water to stop the reaction, and centrifuging the reaction solution at 1,200 rpm for 15 min; placing the obtained precipitate in a dialysis bag, and conducting dialysis in deionized water until the pH is constant; and conducting suction filtration with a 0.22 μm filter membrane, and diluting the obtained filter to a final concentration of 1% to 2% to obtain a nanocellulose dispersion A; wherein the sulfuric acid solution is used at an amount of 10 mL/g fiber to 40 mL/g fiber;{'sub': '2', '(2) preparation of a nano zinc oxide-nanocellulose composite solution B: with the nanocellulose dispersion A as a precursor ...

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Номер записи: 49
04-05-2017 дата публикации

PROCESS AND APPARATUS FOR TREATING LIGNOCELLULOSIC MATERIAL

Номер: US20170120472A1
Автор: ROMPRÉ Stéphane
Принадлежит: 9274-0273 Quebec, Inc.

A process for treating lignocellulosic pieces with a water-soluble lignocellulosic material preservative. The process comprises the step of contacting the lignocellulosic pieces with a water-based preservative solution having a contact temperature between about 70° C. and about 95° C., the water-based preservative solution containing the water-soluble lignocellulosic material preservative in a concentration above about 25% wt. A lignocellulosic treatment apparatus for treating lignocellulosic pieces is also provided. 1. A process for treating lignocellulosic pieces with a water-soluble lignocellulosic material preservative , the process comprising the step of:contacting the lignocellulosic pieces with a water-based preservative solution having a contact temperature between about 70° C. and about 95° C., the water-based preservative solution containing the water-soluble lignocellulosic material preservative in a concentration above about 25% wt.2. The process of claim 1 , wherein the preservative solution has a temperature between about 85° C. and about 95° C.3. The process of or claim 1 , wherein the preservative solution contains the water-soluble lignocellulosic material preservative in a concentration between about 40% wt and about 50% wt.4. The process of claim 3 , wherein the preservative solution contains the water-soluble lignocellulosic material preservative in a concentration between about 45% wt and about 47% wt.5. The process of any one of to claim 3 , wherein the step of contacting the lignocellulosic pieces with the water-based preservative solution is performed during between about 30 seconds and about 30 minutes.6. The process of claim 5 , wherein the step of contacting the lignocellulosic pieces with the water-based preservative solution is performed during less than about 15 minutes.7. The process of any one of to claim 5 , wherein the step of contacting the lignocellulosic pieces with the water-based preservative solution comprises submersing the ...

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Номер записи: 50
04-05-2017 дата публикации

METHODS OF CONFERRING FIRE RETARDANCY TO WOOD AND FIRE-RETARDANT WOOD PRODUCTS

Номер: US20170120473A1
Автор: Gao Xinhao H., Horton John, ZHANG JUN
Принадлежит:

A process is provided for treating wood products including lumber, plywood and other engineered wood products comprising the steps of applying an aqueous fire-retardant impregnate and applying a coating to the surface of the wood product. In one embodiment, said process confers fire-retardant properties to the wood products sufficient to pass the extended burn test of ASTM E-84. The present invention also provides fire retardant wood products. 1. A method of treating plywood or oriented strand board (OSB) comprising the steps of:applying an aqueous fire-retardant impregnate to a wood product consisting of plywood or OSB with a thickness of up to approximately % inch, such that the impregnate penetrates the wood product; andapplying a coating to the wood product surface;wherein said treatment confers fire retardancy to the treated wood product such that the treated wood product exhibits a flame spread distance of not more than 6 feet in an ASTM E-84 30-minute burn test;wherein said fire retardant impregnate is applied by pressure or vacuum treatment, or both, or microwave treatment.2. The method of claim 1 , wherein said fire-retardant impregnate is substantially free of phosphates claim 1 , ammonia claim 1 , and salts thereof.3. The method of claim 1 , wherein said fire-retardant impregnate comprises a phosphate salt and/or a boron-containing compound.4. The method of claim 1 , wherein said fire retardant impregnate comprises a nitrogen-containing compound and/or a boron-containing compound.5. The method of claim 3 , wherein the boron-containing compound is selected from the group consisting of boric acid claim 3 , ammonium borate claim 3 , sodium octaborate claim 3 , sodium pentaborate claim 3 , and sodium tetraborate and hydrates thereof.6. The method of claim 3 , wherein the phosphate salt is selected from the group consisting of monoammonium phosphate claim 3 , diammonium phosphate and triammonium phosphate claim 3 , monosodium phosphate claim 3 , disodium ...

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Номер записи: 51
03-05-2018 дата публикации

TONE BAR WOODY MATERIAL, TONE BAR PERCUSSION INSTRUMENT, AND PRODUCTION METHOD OF TONE BAR WOODY MATERIAL

Номер: US20180122343A1
Автор: HIRAI Eri, Hiraku Tatsuya, SOGA KAZUKI
Принадлежит:

An object of the present invention is to provide a tone bar woody material and a xylophone that are superior in acoustic characteristics and stable in quality. In the tone bar woody material of the present invention, at least a partial region of a surface layer of a wood material was impregnated with a resin composition, and the wood material comprises in the partial region, a plurality of pores each having an average diameter less than 1.2 times an average diameter of vessels in the wood material. 1. A tone bar woody material , whereinat least a partial region of a surface layer of a wood material was impregnated with a resin composition, andthe wood material comprises in the partial region, a plurality of pores each having an average diameter less than 1.2 times an average diameter of vessels in the wood material.2. The tone bar woody material according to claim 1 , wherein a central axis direction of the plurality of pores is substantially perpendicular to a surface of the wood material.3. The tone bar woody material according to claim 1 , wherein an average diameter of the plurality of pores is no less than 10 μm and no greater than 500 μm claim 1 , and an average depth of the plurality of pores is no less than 0.1 mm and no greater than 10 mm.4. The tone bar woody material according to claim 1 , wherein an average pitch of the plurality of pores is no less than 0.2 mm and no greater than 10 mm.5. The tone bar woody material according to claim 1 , wherein number of the plurality of pores per unit area is no less than 14 pores/cmand no greater than 900 pores/cm.6. A tone bar percussion instrument comprising a tone bar woody material claim 1 , whereinat least a partial region of a surface layer of a wood material was impregnated with a resin composition, andthe wood material comprises in the partial region, a plurality of pores each having an average diameter less than 1.2 times an average diameter of vessels in the wood material.7. A production method of a tone ...

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Номер записи: 52
14-05-2015 дата публикации

WAX-BIOCIDE WOOD TREATMENT

Номер: US20150132492A1
Автор: Ashmore John W., Laganella David
Принадлежит: Rohm and Haas Company

A method of preserving wood is provided. The method comprises the step of contacting the wood with an aqueous composition comprising 1. A method of preserving wood , said method comprising the step of contacting said wood with an aqueous composition comprising(a) a wax having melting point higher than 75° C. and an average particle size no greater than 1 micron, {'br': None, 'sub': 2', '2', 'x, 'R—O\ue8a0CHCHO\ue8a0H'}, '(b) greater than 0.08% by weight, based on the weight of said aqueous composition, a nonionic surfactant having the formula'}wherein said R is an aliphatic group having 10 to 16 carbon atoms; wherein the average value of x is 4.5 to 5.5, and(c) one or more organic wood preservative.2. The method of claim 1 , wherein said organic wood preservative comprises a compound selected from the group consisting of tebuconazole claim 1 , propiconazole claim 1 , cypriconazole claim 1 , amical claim 1 , 3-iodo-2-propynylbutylcarbamate claim 1 , 2-(thiocyanomethylthio)-benzothiazole claim 1 , quaternary biocides claim 1 , chlorothalonil claim 1 , cypermethrin claim 1 , permethrin claim 1 , imidacloprid claim 1 , thiacloprid claim 1 , isothiazolones claim 1 , and mixtures thereof.3. The method of claim 1 , wherein said aqueous composition further comprises one or more oil.4. The method of claim 2 , wherein the amount of said oil is 0.02% to 2% by weight based on the weight of said aqueous composition.5. The method of claim 1 , in said nonionic surfactant is a secondary alcohol ethoxylate.6. The method of claim 1 , wherein said wax comprises a polyethylene wax.7. The method of claim l claim 1 , wherein said wax has melting point of 110° C. or greater.8. An aqueous composition claim 1 , useful for treating wood claim 1 , comprising(a) a wax having melting point higher than 75° C. and an average particle size no greater than 1 micron, {'br': None, 'sub': 2', '2', 'x, 'R—O\ue8a0CHCHO\ue8a0H'}, '(b) greater than 0.08% by weight, based on the weight of said aqueous ...

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Номер записи: 53
11-05-2017 дата публикации

TREATED POROUS MATERIAL

Номер: US20170129131A1
Автор: Chen Xue, King Stephen W.
Принадлежит:

The present disclosure describes 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 an olefin-carboxylic acid copolymer; and a modifying agent comprising a quat. 1. A treated cellulosic material comprising: a polymer comprising an olefin-carboxylic acid copolymer; and', 'a modifying agent comprising a quat., 'a cellulosic material having a porous structure defining a plurality of pores, at least a portion of the pores containing a treating agent comprising2. The treated cellulosic material of claim 1 , wherein at least a portion of the carboxylic acid groups of the copolymer are neutralized.3. The treated cellulosic material of any one of - claim 1 , wherein the olefin-carboxylic acid copolymer comprises claim 1 , in polymerized form claim 1 , a monomer selected from the group comprising ethylene claim 1 , propylene claim 1 , 1-butene claim 1 , 3-methyl-1-butene claim 1 , 4-methyl-l-pentene claim 1 ,3-methyl-1-pentene claim 1 , 1-heptene claim 1 , 1-hexene claim 1 , 1-octene claim 1 , 1-decene claim 1 , 1-dodecene claim 1 , butadiene claim 1 , styrene or a mixture thereof.4. The treated cellulosic material of any one of - claim 1 , wherein the olefin-carboxylic acid copolymer comprises claim 1 , in polymerized form claim 1 , a carboxylic acid monomer or anhydride monomer selected from the group comprising acrylic acid claim 1 , maleic acid maleic anhydride claim 1 , or a mixture thereof.5. The treated cellulosic material of any one of - claim 1 , wherein the polymer comprises a mixture of one or more polymers in addition to the olefin-carboxylic acid copolymer.6. The treated cellulosic material of any one of - claim 1 , wherein the modifying agent comprises a quaternary ammonium compound of the formula RRRRNX where each R claim 1 , R claim 1 , R claim 1 , and Rindependently is alkyl claim 1 , alkenyl claim ...

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Номер записи: 54
01-09-2022 дата публикации

METHOD FOR CONTINUOUS ACETYLATION OF WOOD ELEMENTS

Номер: US20220274281A1
Автор: Benstead Stephen John, KAPPEN Theodorus Gerardus Marinus Maria
Принадлежит:

The present invention relates to a method for continuous acetylation of wood elements. The acetylation is conducted with an acetylation medium at a pressure of at least 1.5 barg in a substantially oxygen free environment. Alternatively, the method according to the invention comprises the steps of: (a) feeding wood elements in a substantially oxygen free environment to a continuous acetylation reactor, and (b) treating the wood elements with an acetylation medium in the continuous acetylation reactor under wood acetylation reaction conditions, at a pressure of at least 1.5 barg. The process according to the present invention allows to acetylate wood elements to a high acetyl content in a very efficient way, without compromising on the quality of the material. The acetylated wood elements can be used in the production of medium density fibreboards with superior qualities such as dimensional stability and durability. 1. A method for continuous acetylation of wood elements , wherein the acetylation is conducted with an acetylation medium under wood acetylation reaction conditions at a pressure of at least 1.5 barg in a substantially oxygen free environment.2. A method for continuous acetylation of wood elements comprising the steps of:(a) feeding wood elements in a substantially oxygen free environment to a continuous acetylation reactor,(b) treating the wood elements with an acetylation medium in the continuous acetylation reactor under wood acetylation reaction conditions, at a pressure of at least 1.5 barg.3. The method according to claim 1 , wherein the oxygen content in the acetylation reactor is less than 0.8 vol. %.4. The method according to claim 2 , wherein the oxygen content of the wood elements fed to the acetylation reactor is less than 0.8 vol. %.5. The method according to claim 1 , comprising removing oxygen from the wood elements before the acetylation reaction claim 1 , preferably by applying vacuum level of 100 mbar or less to the wood elements.6. The ...

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Номер записи: 55
02-05-2019 дата публикации

WOOD TREATMENT FOR DIMENSIONAL STABILIZATION

Номер: US20190126506A1
Автор: Gao Xinhao H., Horton John, ZHANG JUN, Ziobro Richard
Принадлежит:

A process is provided for treating wood products including lumber, plywood and other engineered wood products comprising the steps of contacting a composition comprising a polypropylene glycol, a high molecular weight polyethylene glycol, a polyether polyol having low solubility in water, or a polytetrahydrofuran, or hydrophobic polyether polyol, with the wood product. The invention also provides wood products comprising a polypropylene glycol, a high molecular weight polyethylene glycol, a polyether polyol having low solubility in water, or a polytetrahydrofuran, or hydrophobic polyether polyol, that have greater dimensional stability compared to an untreated wood product. 149-: (canceled)50. A treated wood product comprising a composition consisting essentially of polypropylene glycol or a polypropylene glycol copolymer with an average molecular weight of between at least 500 and 100 ,000 , wherein the treated wood product has a retention of at least 5 pounds per cubic foot (pcf) of the polypropylene glycol or a polypropylene glycol copolymer , and wherein the treated wood product has improved dimensional stability compared to an untreated wood product , and wherein the treated wood product is produced by a treatment process comprising pressure , vacuum , or microwave treatment.51. The treated wood product of claim 50 , wherein the average molecular weight of the polypropylene glycol or a polypropylene glycol copolymer is at least 2 claim 50 ,000.52. The treated wood product of claim 50 , wherein the average molecular weight of the polypropylene glycol or a polypropylene glycol copolymer is at least 3 claim 50 ,000.53. The treated wood product of claim 50 , wherein the average molecular weight of the polypropylene glycol or a polypropylene glycol copolymer is at least 4 claim 50 ,000.54. The treated wood product of claim 50 , wherein the average molecular weight of the polypropylene glycol or a polypropylene glycol copolymer is at least 4 claim 50 ,800.55. The ...

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Номер записи: 56
03-06-2021 дата публикации

APPARATUS AND METHOD FOR HEAT TREATING WOOD

Номер: US20210162623A1
Автор: Bloye Dwight Frederick
Принадлежит:

A method of heat treating a wood board comprises: passing a wood board from an input end to a discharge end of a conveyor; and heating the board with radiant heat as it is passes along the conveyor, the heating can be such as to provide significant charring of the wood. The wood board is then brushed with at least one rotating brush. An apparatus, for carrying out the method, has a conveyor for conveying a wood board having an input end and a discharge end. A radiant heater is located above the conveyor for heating the wood board, and a rotating brush is mounted for rotation above the conveyor, for brushing the wood board after heating. 1. An apparatus , for heat treating wood , the apparatus comprising: a conveyor for conveying a wood board having an input end and a discharge end; a radiant heater located above the conveyor for heating the wood board; and a rotating brush mounted for rotation above the conveyor , for brushing the wood board after heating by the radiant heater.2. An apparatus as claimed in claim 1 , wherein the radiant heater is a gas heater powered by combustible gas claim 1 , wherein optionally the radiant heater comprises a radiant heater assembly comprising a plurality of individual radiant burners and a control unit claim 1 , enabling individual control of the individual radiant burners claim 1 , and wherein optionally the radiant heater assembly extends longitudinally along and transversely across the conveyor claim 1 , and the individual radiant burners are configured to permit the effective longitudinal extent and transverse extent of the radiant burner assembly to be varied by operation of selected individual radiant burners.3. An apparatus as claimed in claim 2 , wherein the height of the radiant heater assembly above the conveyor is adjustable claim 2 , and wherein optionally the conveyor is mounted on a main frame claim 2 , at least two inverted U-shaped frames are mounted on the mainframe above the conveyor claim 2 , threaded shafts are ...

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Номер записи: 57
17-05-2018 дата публикации

ENGINEERED HARDWOOD FLOORING AND MANUFACTURE THEREOF

Номер: US20180135312A1
Автор: Schafer Scott F.
Принадлежит:

Methods and articles of manufacture relating to engineered hardwood flooring are provided. Engineered hardwood flooring is produced by drying a structural layer comprising a hardwood to a moisture content from about 0.1% to about 3%, whereupon a cell structure of the hardwood collapses. The dried structural layer is humidified to where the hardwood has an increased moisture content greater than about %. First and second outer layers are adhered to respective first and second sides of the structural layer to form an engineered product, the structural layer sandwiched by the first outer layer and the second outer layer. 1. A method of manufacturing engineered hardwood flooring comprising:{'b': 0', '1, 'drying a structural layer comprising a hardwood to a moisture content from about .% to about 3%, whereupon a cell structure of the hardwood collapses; and'}humidifying the dried structural layer to where the hardwood has an increased moisture content greater than about 3%.2. The method of claim 1 , further comprising forming at least one coupling feature in the structural layer claim 1 , the at least one coupling feature configured to allow the structural layer to be coupled to another structural layer.3. The method of claim 2 , wherein the at least one coupling feature includes tongue and groove features.4. The method of claim 1 , further comprising coupling a first outer layer to a first side of the structural layer.5. The method of claim 4 , wherein the first outer layer includes a member selected from the group consisting of a hardwood claim 4 , a composite wood claim 4 , a polymeric material claim 4 , and combinations thereof.6. The method of claim 4 , further comprising forming at least one coupling feature in one of the first outer layer and the structural layer claim 4 , the at least one coupling feature configured to allow the one of the first outer layer and the structural layer to be coupled to another one of the first outer layer and the structural layer.7. ...

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Номер записи: 58
08-09-2022 дата публикации

SYSTEMS AND METHODS FOR DRYING WOOD PRODUCTS

Номер: US20220281131A1
Автор: CRONDAHL Michael, GOLLMANN Christian
Принадлежит:

Systems and methods for treating wood products are provided. The methods comprise preconditioning the wood product by irradiating one or more surfaces of the wood product with infrared (IR) and/or ultraviolet (UV) radiation and subsequently treating the wood product. The systems comprise one or more fixtures positioned to irradiate one or more surfaces of the wood product with IR and/or UV radiation, wherein each fixture comprises a reflector and a radiation source. 120-. (canceled)21. A method for treating lumber , the method comprising:preconditioning the lumber by irradiating one or more surfaces of the lumber with infrared (IR) and ultraviolet (UV) radiation; andsubsequently treating the lumber,{'sup': −7', '−3, 'wherein the IR radiation has a wavelength between about 7×10m and about 1×10m,'}{'sup': −8', '−7, 'and wherein the UV radiation has a wavelength between about 1×10m and about 4×10m.'}22. The method according to claim 21 , wherein the one or more surfaces of the lumber is first irradiated with IR radiation and subsequently irradiated with UV radiation.23. The method according to claim 21 , wherein the one or more surfaces of the lumber is first irradiated with UV radiation and subsequently irradiated with IR radiation.24. The method according to claim 21 , wherein the one or more surfaces of the lumber is irradiated with IR radiation and UV radiation simultaneously.25. The method according to claim 21 , wherein the one or more surfaces of the lumber is irradiated with IR and UV radiation for a time sufficient to distribute moisture throughout the lumber and/or the one or more surfaces of the lumber.26. The method according to claim 21 , wherein one or more areas of the one or more surfaces of the lumber is irradiated with IR and UV radiation for a time sufficient to distribute moisture throughout the lumber and/or the one or more surfaces of the lumber.27. The method according to claim 21 , wherein subsequently treating the lumber comprises one or more ...

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Номер записи: 59
26-05-2016 дата публикации

CHEMICALLY MODIFIED WOOD AND NON-WOOD PRODUCTS AND METHODS FOR THE PRODUCTION THEREOF

Номер: US20160144531A1
Автор: HERMESCEC Branko
Принадлежит:

Provided is a process for chemically modifying wood or non-wood comprising: (a) impregnating said wood or non-wood with an aqueous composition comprising an acid polymerisation catalyst; (b) impregnating the wood or non-wood product from step (a) with 3-furfuryl borate (‘3-FB’); and (c) subjecting the wood product from (b) for a time and under conditions to affect polymerisation of the 3-FB. Modified wood and non-wood products are also provided. 1. A process for chemically modifying wood or non-wood comprising:(a) impregnating said wood or non-wood with an aqueous composition comprising an acid polymerisation catalyst;(b) impregnating the wood or non-wood product from step (a) with 3-furfuryl borate (‘3-FB’); and(c) subjecting the wood product from (b) for a time and under conditions to affect polymerisation of the 3-FB.2. The process according to wherein the acid polymerisation catalyst is maleic acid.3. The process according to wherein the acid polymerisation catalyst is an aqueous composition comprising 1-10% w/w of the acid polymerisation catalyst.4. The process according to wherein the impregnating step (a) is capable of loading the wood or non-wood with the acid polymerisation catalyst from about 15% to 30% (based on the dry weight of the wood or non-wood).5. The process according to wherein the impregnating step (a) is carried out by a vacuum-pressure-vacuum system.6. The process according wherein the vacuum-pressure-vacuum system is −90 to −95KPa—about 200 to about 1 claim 5 ,000 KPa—−90 to −95 KPa.7. The process according to wherein the impregnating step (b) is preceded by a drying step and preferably a drying step to reduce the MC of the wood or non-wood to less than 10%.8. The process according to wherein the impregnating step (b) is conducted so as to facilitate chemical loading of 3-FB of from 15% to 30% (based on the dry weight of the wood or non-wood).9. The process according to wherein the impregnating step (b) is carried out by a vacuum-pressure- ...

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Номер записи: 60
15-09-2022 дата публикации

ENHANCED PERFORMANCE OF WOOD AND ENGINEERED WOOD PRODUCTS USING COMBINED DURABILITY AND FLAME RETARDANCY

Номер: US20220288808A1
Автор: MOON Ronald Philip
Принадлежит: Wood Modification Technologies Limited

A treatment process and wood products thereof including a product formulation of a single phase solution combining a wood preservative (durable component) with a Flame Retardant component (FR) to produce a durable Flame Retardant (dFR) treated wood product. The durable component comprises a range of copper based and non-copper based wood preservatives, while the FR component comprises alkali metal silicates and alkali metal aluminate compounds. The dFR working solution undergoes chemical impregnation (treatment) followed by a heat (fixation) process step that locks the chemical into the wood making it non-leachable. The dFR treated wood products are tested for their enhanced fire performance properties. When heated, wood undergoes thermal degradation and combustion producing gases, vapors, tars and chars. Using a cone calorimeter burn test method, dFR treated wood products show a significant reduction in heat release rate, mass loss rate and smoke generated values compared to untreated radiate pine. 1. A process of imparting increased durability and fire retardancy properties to lignocellulosic material comprising: an impregnation treatment process,', 'a spray system,', 'an immersion system,', 'a deluge system', 'to penetrate a wood preservative and a flame retardant (FR) comprising one or more of alkali metal silicates and alkali metal aluminates into cellular internal voids of the lignocellulosic material;, 'utilizing at least one of'}wherein the FR is selected from one or more of soluble alkali metal silicates including sodium silicate, potassium silicate, lithium silicate and soluble alkali metal aluminates, wherein said soluble alkali metal aluminates include sodium aluminate and potassium aluminate,{'sub': 2', '3', '2', '3', '2', '2, 'wherein the FR further comprises aluminium oxide [AlO] nano-particle dispersions, aluminium silicate [AlO.SiO] nano-particle dispersions and silicon dioxide [SiO] nano-particle dispersions.'}2. The process of claim 1 , wherein ...

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Номер записи: 61
15-09-2022 дата публикации

RADIO FREQUENCY TREATMENT TO PHYTOSANITIZE WOOD PACKAGING MATERIALS USED IN INTERNATIONAL SHIPPING

Номер: US20220288809A1
Автор: Hamelin Mark, Hoover Kelli, Janowiak John J., Mack Ronald G., Szymona Karolina
Принадлежит:

A method for treating wood packaging materials using Radio Frequency heating includes the steps of heating wood packaging materials using RF heating and applying a pressure before the heating or incrementally applying a pressure during the heating. The wood packaging materials are heated in a RF operating unit that has a sealed chamber with an inner surface and a liner cover a majority of the inner surface, the liner having a heat-reflective inner face and an insulation layer between the inner face and the inner surface. 1. A method of treating wood packaging materials (WPMs) using Radio Frequency (RF) heating , the method comprising the steps of: a sealable chamber having an inner surface,', 'a liner covering a majority of the inner surface, the liner having a heat-reflective inner face and an insulation layer between the inner face and the inner surface of the sealable chamber,', 'a RF generator connected to the chamber for applying RF heating rea ent to the WPM,', 'a pressurization system for controlling the pressure inside the chamber, loading the chamber with a workload of the WPMs;, 'providing a RF operating unit includingapplying a pressure to the chamber during the treatment, the pressure being at least 5 psi greater than atmospheric pressure;treating the WPMs using RF heating until a temperature of the WPMs reaches a predetermined temperature not more than 100° C.; andmaintaining the predetermined temperature for at least 1 minute.2. The method of treating wood packaging materials in accordance with claim 1 , wherein the liner covers at least 75% percent of the entire inner surface of the sealed chamber.3. The method of treating wood packaging materials in accordance with claim 1 , wherein the heat-reflective inner face of the liner is aluminum foil claim 1 , aluminum fabric claim 1 , or aluminum anodized polyester fabric having a heat reflectivity of at least 90%.4. The method of treating wood packaging materials in accordance with claim 1 , wherein the ...

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Номер записи: 62
07-05-2020 дата публикации

Enhanced performance of wood and engineered wood products using combined durability and flame retardancy

Номер: US20200139574A1
Автор: Ronald Philip Moon
Принадлежит: Wood Modification Technologies Ltd

A treatment process and wood products thereof including a product formulation of a single phase solution combining a wood preservative (durable component) with a Flame Retardant component (FR) to produce a durable Flame Retardant (dFR) treated wood product. The durable component comprises a range of copper based and non-copper based wood preservatives, while the FR component comprises alkali metal silicates and alkali metal aluminate compounds. The dFR working solution undergoes chemical impregnation (treatment) followed by a heat (fixation) process step that locks the chemical into the wood making it non-leachable. The dFR treated wood products are tested for their enhanced fire performance properties. When heated, wood undergoes thermal degradation and combustion producing gases, vapors, tars and chars. Using a cone calorimeter burn test method, dFR treated wood products show a significant reduction in heat release rate, mass loss rate and smoke generated values compared to untreated radiate pine.

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Номер записи: 63
11-06-2015 дата публикации

MULTI-FUNCTIONAL WOOD PRESERVATIVES BASED ON A BORATE/FATTY ACID COMBINATION

Номер: US20150158200A1
Автор: Coleman Robert
Принадлежит:

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. 1. A method for protecting a wood product or structure comprising:(a) providing a wood product, composite, or structure and composition including a component selected from the group consisting of a borate, sorbic acid, and combinations thereof: a fatty acid; water; and an emulsifier, wherein the composition is adapted to provide an emulsion; and(b) incorporating the composition into the wood product, composite, or structure to provide protection from insects, decay fungi, and mold fungi.2. The method of claim 1 , wherein the component selected is a borate and the composition resists leaching from the treated wood product or structure upon repeated exposure to water.3. The method of claim 1 , wherein the component selected is a borate and incorporating the composition into the wood product claim 1 , composite claim 1 , or structure involves incorporating the composition during manufacture claim 1 , milling or construction of the wood product claim 1 , composite claim 1 , or structure as a preventative protective treatment.4. The method of claim 3 , wherein incorporating the composition involves contacting the wood product claim 3 , composite claim 3 , or structure with the composition in a process involving a treatment selected from the group consisting of a soaking treatment claim 3 , a dipping ...

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Номер записи: 64
21-08-2014 дата публикации

Wood substrate furnished with a flame retardant

Номер: US20140234632A1
Автор: Bettina GAJETZKI, Mathias Nolte, Monika Bauer, Nina Schneider, Sebastian Steffen, Thomas Palm
Принадлежит: Lufthansa Technik AG

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.

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Номер записи: 65
21-08-2014 дата публикации

Composition and Method of Manufacture of Hardened Wood

Номер: US20140234647A1
Автор: Sanderson Brian Matthew
Принадлежит:

There is a hardened wood composition, comprising an acetylated whole wood portion that may have substantially all of its accessible interior volume impregnated with a hardened thermosetting plastic. A method of manufacturing a hardened wood comprising the steps of: acetylating a whole wood portion and impregnating the whole wood portion with a liquid-phase thermosetting polymer then curing such thermosetting polymer impregnated porous body by the steps of: enclosing the body in a fluid impermeable bag and subjecting the enclosed body to enhanced fluid pressure substantially, contemporaneously, with subjecting the enclosed body to a temperature sufficient to cure the thermosetting plastic impregnated therein by submerging the same in water near its boiling point. 1. A hardened wood composition , comprising an acetylated whole wood portion having substantially all of its accessible interior volume impregnated with a hardened thermosetting plastic.2. A method of manufacturing a hardened wood comprising the steps of acetylating a whole wood portion and impregnating the whole wood portion with a liquid-phase thermosetting polymer.3. A method of curing a thermosetting polymer impregnated porous body comprising the steps of enclosing the body in a fluid impermeable membrane and subjecting the enclosed body to enhanced fluid pressure as compared to pressure immediately surrounding the body substantially contemporaneously with subjecting the enclosed body interior to the membrane to a temperature sufficient to cure the thermosetting plastic impregnated therein.4. The method of claim 3 , wherein the membrane is a plastic bag and the fluid pressure and temperature is applied by submerging the enclosed body in water near but below boiling temperature.5. The method of claim 3 , wherein the membrane includes a material selected from the group of materials consisting of silicone claim 3 , rubber claim 3 , neoprene claim 3 , and biaxially-oriented polyethylene terephthalate. This ...

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Номер записи: 66
31-05-2018 дата публикации

SINGLE PASS CONTINUOUS LUMBER DRYING KILN

Номер: US20180149428A1
Автор: KOLARI GARY L.
Принадлежит:

A single-pass lumber kiln includes a main drying chamber, a heat source to provide heat to the main drying chamber, a pre-heating chamber connected to a receiving side of the main drying chamber, the pre-heating chamber having a moisture collector and a kiln entrance, a supplemental heat source to provide heat to the pre-heating chamber, a conditioning chamber connected to an exit of the main drying chamber, the conditioning chamber having a moisture delivery system and a kiln exit, wherein the pre-heating chamber, the main drying chamber and the conditioning chamber are positioned such that lumber entering the kiln travels in only one direction, partitions between the main drying chamber and the conditioning chamber, and between the main drying chamber and the pre-heating chamber, the partitions having controllable dampers, fans arranged adjacent the pre-heating chamber, the conditioning chamber, and the main drying chamber, wherein some of the fans are arranged between the pre-heating and main drying chamber to transfer heat from the main drying chamber to the pre-heating chamber through the dampers, wherein the supplemental heat source provides heat to the pre-heating chamber in addition to the heat from the main drying chamber, exhaust fans arranged adjacent the kiln entrance and the kiln exit, and a fluid path connecting the moisture collector of the pre-heating chamber to the moisture delivery system of the conditioning chamber. 1. A single-pass lumber kiln , comprising:a main drying chamber;a heat source to provide heat to the main drying chamber;a pre-heating chamber connected to a receiving side of the main drying chamber, the pre-heating chamber having a moisture collector and a kiln entrance;a supplemental heat source to provide heat to the pre-heating chamber;a conditioning chamber connected to an exit of the main drying chamber, the conditioning chamber having a moisture delivery system and a kiln exit, wherein the pre-heating chamber, the main drying ...

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Номер записи: 67
18-06-2015 дата публикации

REACTOR SYSTEM AND PROCESS FOR WOOD MODIFICATION

Номер: US20150165642A1
Автор: Bussemaker Paul, KAPPEN Theodorus Gerardus Marinus Maria, Pol Bernardus Jozef Maria, Rademakers Karlijn
Принадлежит: TITAN WOOD LIMITED

Disclosed is a reactor system for the modification of lignocellulosic materials. According to the invention, the system comprises a reaction vessel, a vacuum connection and an inlet and/or outlet connected to a gas flow loop connected to a heat exchanger and at least one fluid circulation device. Particularly, gas flow loop is arranged so as to allow gas circulation over the diameter of the reaction vessel. The gas flow loop preferably includes a gas distribution device, such as a distribution plate. 1. A reactor system for the acetylation of lignocellulosic materials , the system comprising a reaction vessel having a closable aperture suitable for the introduction of lignocellulosic material , a vacuum connection suitable for creating vacuum in the reaction vessel , a liquid-inlet and/or liquid-outlet for acetylation fluid , and a gas-inlet and gas-outlet connected to a first gas flow loop , said first gas flow loop comprising a gas flow line connecting the gas-inlet and the gas-outlet , said gas flow line connected to a heat exchanger and at least one fan , wherein the inlet and the outlet of the first gas flow loop are positioned such as to allow gas circulation over the diameter of the reaction vessel.2. A reactor system according to claim 1 , wherein the inlet for the first gas flow loop is connected to a gas distribution device claim 1 , such as a distribution plate claim 1 , positioned between the inlet and the inside of the reaction vessel.3. A reactor system according to claim 1 , comprising a plurality of gas flow loops connecting further inlets and outlets of the reaction vessel claim 1 , said further inlets and outlets positioned such as to allow gas circulation over the diameter of the reaction vessel claim 1 , said first and further inlets and outlets being divided over the length of the reaction vessel.4. A reactor system according to claim 1 , wherein the reaction vessel comprises an outlet connected to an additional gas flow line claim 1 , said ...

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Номер записи: 68
24-06-2021 дата публикации

Method of improving the hydrophobic properties of cellulosic materials without leaving an acidic residue

Номер: US20210187781A1
Автор: Edwin Neal, Fred Donald Lowder, Robert William Morton
Принадлежит: Woodholdings Environmental Inc

A method for improving the hydrophobic properties of a cellulosic material having a measurable moisture content without leaving an acidic residue comprises immersing the material in an inert gas, treating the material at a first temperature of between about 180° F. and about 250° F. with a vapor of silane until the silane reacts with the moisture to form hydroxysilanes and an acid vapor, then treating the material at a second temperature of between about 280° F. and about 350° F. until the hydroxysilanes convert to dehydrated silanes that are diffusely resident in the material, and removing the moisture, the acid vapor and remaining silane vapor until the treated material is substantially acid free.

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Номер записи: 69
14-06-2018 дата публикации

COLORATION OF ACETYLATED WOOD

Номер: US20180162008A1
Автор: Williams David J.
Принадлежит:

Techniques and products are described for coloring acetylated wood products. An acetylated wood product can be impregnated by a coloring medium within a chamber and the colorant or colorants contained within the coloring medium can be fixed to the acetylated wood product by the application of heat or by application of radio frequency radiation to color any external surface or interior region of the acetylated wood product which has been impregnated by the coloring medium. 1. A method for coloring an acetylated wood product , comprising:providing the acetylated wood product in a chamber;providing a coloring medium in liquid form containing one or more colorants into the chamber;causing the coloring medium to impregnate the acetylated wood product;and then heating the impregnated acetylated wood product to fix the one or more colorants to any exterior surface or any interior region of the acetylated wood product which has been impregnated by the coloring medium.2. The method of claim 1 , further comprising:reducing pressure in the chamber to remove air from the acetylated wood product, wherein the coloring medium impregnates the surface and at least some of the interior of the acetylated wood product by replacing the air removed from the acetylated wood product by vacuum impregnation.3. The method of claim 2 , further comprising:applying positive pressure following the vacuum impregnation to further promote penetration of the coloring medium into the acetylated wood product.4. The method of claim 1 , further comprising:controlling the degree of penetration of the coloring medium into the acetylated wood product by applying positive pressure after providing the coloring medium into the chamber without prior application of vacuum.5. The method of claim 1 , further comprisingwithout application of vacuum or positive pressure, immersing the acetylated wood product in the coloring medium to effect impregnation by infusion thereby limiting the impregnation largely to the ...

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Номер записи: 70
15-06-2017 дата публикации

WOOD MARKING AND IDENTIFICATION

Номер: US20170168038A1
Автор: Cavender Stephen Edward, Greene Richard Wayne, Haugen Barry Dean
Принадлежит:

Wood markers and processes for durably marking and subsequently identifying both original grain wood products and wood-plastic composite products. The wood marker can be dispersed beneath the surface of the wood, where it is protected from the elements and may endure years of exposure to the elements. The wood marker is compatible with state-of-the-art pressure-treating processes and may subsequently be detected for authentication purposes by known analytical methods. 1. A composition of matter , which comprises:wood; anda marker composed of a carboxylate of a metal cation in which the metal is selected from the group consisting of non-biocidal metals having an atomic weight in the range of 12 to 83 and mixtures thereof, and a carboxylate anion that includes about 6 to about 18 carbon atoms.2. The composition of claim 1 , in which the selected metal is in Period 3 claim 1 , Period 4 claim 1 , or Period 5 of the Periodic Table of the elements.3. The composition of claim 1 , in which the wood is Southern Yellow Pine.4. The composition of claim 1 , in which the marker is dispersed within the wood.5. The composition of claim 1 , in which the marker is selected from the group consisting of bismuth claim 1 , cobalt claim 1 , lithium claim 1 , manganese claim 1 , zirconium claim 1 , bismuth carboxylates claim 1 , cobalt carboxylates claim 1 , lithium carboxylates claim 1 , manganese carboxylates claim 1 , zirconium carboxylates claim 1 , and mixtures thereof.6. The composition of claim 1 , in which the selected metal is a rare earth metal or a mixture of rare earth metals.7. The composition of claim 1 , in which the marker is fluorescent when excited by x-ray radiation.8. The composition of claim 1 , which includes one or more biocidal metals.9. A marker fluid dispersion for marking wood claim 1 , which comprises:a continuous water-based pressure-treating phase for increasing the resistance of wood to weathering, fire, or microbial attack or a continuous water phase; anda ...

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Номер записи: 71
01-07-2021 дата публикации

MODIFIED WOOD PRODUCT

Номер: US20210197419A1
Автор: ELS Justin, NG Hans Mann-Kern, PITMAN Andrew John
Принадлежит:

A method of producing a modified wood product is disclosed. The method comprises heating a resin impregnated wood product in a reactor, the resin impregnated wood product comprising source wood impregnated with a resin composition comprising resin, the heating being so as to substantially cure the resin, thereby to produce the modified wood product. The method comprises, during the heating of the resin impregnated wood product in the reactor, introducing water into the reactor. A reactor and a modified wood product are also disclosed. 1. A method of producing a modified wood product , the method comprising:heating a resin impregnated wood product in a reactor, the resin impregnated wood product comprising source wood impregnated with a resin composition comprising resin, the heating being so as to substantially cure the resin, thereby to produce the modified wood product;wherein the method comprises, during the heating of the resin impregnated wood product in the reactor, introducing water into the reactor in the form of a spray or aerosol or mist to add moisture to the surfaces of the resin impregnated wood product, wherein the introducing the water into the reactor comprises introducing the water into the reactor when a core portion of the resin impregnated wood product reaches a temperature in the range 120° C. to 130° C.2. The method according to claim 1 , wherein the introducing the water into the reactor comprises introducing the water into the reactor via one or more nozzles located at or towards a top portion of the reactor.3. The method according to claim 1 , wherein the introducing the water into the reactor comprises introducing a volume of water in the range 20 to 30 millilitres per square meter of surface area of resin impregnated wood product in the reactor.4. The method according to claim 1 , wherein the introducing the water into the reactor comprises introducing water into the reactor at a rate in the range of 700 to 900 millilitres per minute claim ...

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Номер записи: 72
22-06-2017 дата публикации

METHOD FOR THE MODIFICATION OF WOOD

Номер: US20170173819A1
Автор: KAPPEN Theodorus Gerardus Marinus Maria, Turnbull Neil
Принадлежит:

Disclosed is a method for the continuous impregnation of wood elements, such as wood chips. The method comprises the subsequent steps of subjecting the wood elements to vacuum, to contact with acetylation fluid, and to impregnation pressure. Preferably, the process is conducted in a plant having conveyors, such as transportation screws, in suitable positions between the zones in which the subsequent process steps are conducted. The impregnation method is used in connection with the acetylation of the wood elements, and preferably is followed by a continuous acetylation process conducted in an acetylation reaction zone downstream of the zone where the impregnation is conducted. 1. A process for the impregnation of wood elements with acetylation fluid , comprising the following steps:(a) providing wood elements to a vacuum chamber;(b) subjecting the wood elements to vacuum in said vacuum chamber so as to provide vacuum-treated wood elements;(c) transferring the vacuum-treated wood elements, under vacuum, to a contacting chamber downstream of the vacuum chamber;(d) contacting the wood elements, in said contacting chamber, with acetylation fluid, so as to provide a wood acetylation slurry comprising wood elements and acetylation fluid;(e) discharging the wood acetylation slurry from the contacting chamber;(f) subjecting the discharged wood acetylation slurry to pressure;(g) subjecting the slurry to liquid-from-solid separation so as to obtain impregnated wood elements.2. A process according to claim 1 , wherein the wood elements are transported through the vacuum chamber by a conveying device claim 1 , preferably a screw.3. A process according to or claim 1 , wherein the wood elements are supplied to the vacuum chamber via a lock chamber claim 1 , preferably a rotary valve.4. A process according to any one of the preceding claims claim 1 , wherein a column of liquid between the vacuum chamber and the contacting chamber counteracts backflow of liquid from the contacting ...

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Номер записи: 73
28-05-2020 дата публикации

PROCESS FOR SUPERCRITICAL OR SUBCRITICAL PARTIAL DELIGNIFICATION AND FILLING OF A LIGNOCELLULOSIC MATERIAL

Номер: US20200164542A1
Автор: BOITOUZET Timothée
Принадлежит:

The invention concerns a process for treating lignocellulosic material, preferably wood, comprising the following successive steps: 115-. (canceled)16. A method for processing a structure of lignocellulosic material , comprising:(a) using at least one fluid in a supercritical or subcritical phase to extract at least a portion of lignin from said structure of lignocellulosic material to produce a delignified structure;(b) subjecting said delignified structure to conditions sufficient to functionalize said delignified structure, thereby providing a functionalized delignified structure; and(c) bringing said functionalized delignified structure in contact with a filling compound to fill at least a portion of said functionalized delignified structure, thereby providing said functionalized delignified structure or derivative thereof comprising said filling compound or derivative thereof.17. The method of claim 16 , wherein said at least one fluid is in said supercritical phase.18. The method of claim 16 , wherein said at least one fluid is in said subcritical phase.19. The method of claim 16 , wherein said at least one fluid comprises (i) carbon dioxide (CO) in a supercritical phase claim 16 , (ii) at least one alcohol in a supercritical phase claim 16 , or (iii) water in a subcritical phase.20. The method of claim 19 , wherein said at least one fluid comprises said COin said supercritical phase claim 19 , wherein said at least one fluid further comprises at least one polar cosolvent selected from the group consisting of dioxane claim 19 , water claim 19 , methanol claim 19 , ethanol claim 19 , acetic acid claim 19 , and acetone.21. The method of claim 19 , wherein said at least one fluid comprises said at least one alcohol in said supercritical phase claim 19 , wherein said at least one alcohol comprises t-butanol or isopropanol.22. The method of claim 19 , wherein said at least one fluid comprises said water in said subcritical phase claim 19 , wherein said at least one ...

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Номер записи: 74
30-06-2016 дата публикации

Wax-biocide wood treatment

Номер: US20160185008A1
Автор: David M. LAGANELLA, John W. Ashmore
Принадлежит: Rohm and Haas Co

A method of achieving greater penetration of organic wood preservative into wood is provided.

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Номер записи: 75
09-07-2015 дата публикации

WOOD PRESERVATIVES AND METHODS FOR TREATING WOOD

Номер: US20150189870A1
Автор: Lake Michael A., McIntyre Craig R., Robinson Philip L.
Принадлежит: Liquid Lignin Company, LLC

Treated wood, wood preservative compositions, and methods for treating wood generally include applying to the wood a wood preservative composition comprising a boron containing compound and a pH-reduced black liquor comprising soluble lignin, wherein the boron-containing compound is soluble in the pH-reduced black liquor and wherein the pH-reduced black liquor is derived from a carbonation process or an acid addition process of black liquor having phase-separated solid lignin and/or dense liquid lignin removed therefrom, and drying the wood. 1. A wood preservative composition , comprising:a boron containing compound; anda pH-reduced black liquor comprising soluble lignin, wherein the boron containing compound is soluble in the pH-reduced black liquor and wherein the pH-reduced black liquor is derived from a carbonation process and/or an acid addition process of black liquor having phase separated solid lignin and/or dense liquid lignin removed therefrom.2. The wood preservative composition of claim 1 , wherein the pH-reduced black liquor has a pH within a range of less than about 13 to about 9 to 10.3. The wood preservative composition of claim 1 , wherein the pH-reduced black liquor is subjected to membrane filtration to remove a permeate comprising low molecular weight lignin having molecular weights between 200 and 2000 Daltons claim 1 , organic salts claim 1 , and/or inorganic salts.4. The wood preservative composition of claim 1 , wherein the pH-reduced black liquor is subjected to an oxygenation process to oxidize odorous compounds therein.5. The wood preservative composition of claim 1 , wherein the composition is an aqueous solution.6. The wood preservative composition of claim 1 , wherein the pH-reduced black liquor is oxygenated pH-reduced black liquor including a lower amount of odor causing compounds relative to pH-reduced black liquor that is not oxygenated.7. Treated wood comprising:wood;at least one boron-containing component, andpH-reduced black ...

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Номер записи: 76
13-07-2017 дата публикации

WOOD TREATMENT FOR DIMENSIONAL STABILIZATION

Номер: US20170197329A1
Автор: Horton John, Howard Xinhao, ZHANG JUN, Ziobro Richard (deceased)
Принадлежит: Koppers Performance Chemicals Inc.

A process is provided for treating wood products including lumber, plywood and other engineered wood products comprising the steps of contacting a composition comprising a polypropylene glycol, a high molecular weight polyethylene glycol, a polyether polyol having low solubility in water, or a polytetrahydrofuran, or hydrophobic polyether polyol, with the wood product. The invention also provides wood products comprising a polypropylene glycol, a high molecular weight polyethylene glycol, a polyether polyol having low solubility in water, or a polytetrahydrofuran, or hydrophobic polyether polyol, that have greater dimensional stability compared to an untreated wood product. 1. A method of treating a wood product comprising the steps of contacting a composition comprising polypropylene glycol or a polypropylene glycol copolymer with an average molecular weight of between at least 500 and 100 ,000 with a wood product.2. The method of claim 1 , wherein the contacting step comprises pressure claim 1 , vacuum claim 1 , or microwave treatment.3. The method of claim 1 , wherein the average molecular weight of the polypropylene glycol or a polypropylene glycol copolymer is at least 2 claim 1 ,000.4. The method of claim 1 , wherein the average molecular weight of the polypropylene glycol or a polypropylene glycol copolymer is at least 3 claim 1 ,000.5. The method of claim 1 , wherein the average molecular weight of the polypropylene glycol or a polypropylene glycol copolymer is at least 4 claim 1 ,000.6. The method of claim 1 , wherein the average molecular weight of the polypropylene glycol or a polypropylene glycol copolymer is at least 4 claim 1 ,800.7. The method of claim 1 , wherein the average molecular weight of the polypropylene glycol or a polypropylene glycol copolymer is at least 5 claim 1 ,000.8. The method of claim 1 , wherein the average molecular weight of the polypropylene glycol or a polypropylene glycol copolymer is at least 6 claim 1 ,000.9. The method of ...

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Номер записи: 77
26-07-2018 дата публикации

Methods and systems for impregnating wood with a polymer solution and products thereof

Номер: US20180207834A1
Автор: TRAN HOAI Nam
Принадлежит:

The present disclosure relates, according to some embodiments, to methods and systems for impregnating wood with a polymer solution and products thereof. In some embodiments, the present disclosure relates to a method of processing a wood piece to generate a wood product, the method comprising: (a) placing the wood piece into a reactor having a chamber pressure of a vacuum environment; (b) exposing the wood piece to a polymer solution; (c) performing an iterative process where each cycle of the iterative process comprises a pressurizing period during which the chamber pressure is increased to an increased chamber pressure and a stabilizing period during which the chamber pressure is monitored to measure a chamber pressure decrease, if any; (d) when the decrease of chamber pressure during the stabilizing period is less than or equal to the certain threshold change, normalizing the reactor chamber to a normalized pressure; and (e) setting the wood piece to generate the wood product. The present disclosure further relates to a wood product generated by a method of processing a wood piece. 1. A method of processing a wood piece to generate a wood product , the method comprising:(a) placing the wood piece into a reactor having a chamber pressure of a vacuum environment;(b) exposing the wood piece to a polymer solution; (i) increasing the chamber pressure during the pressurizing period by a value less than or equal to a maximum pressure change to the increased chamber pressure for the cycle;', '(ii) monitoring the chamber pressure during the stabilizing period to determine a magnitude of the chamber pressure decrease, if any, from the increased chamber pressure for the cycle;', '(iii) if the decrease of chamber pressure during the stabilizing period for the cycle is more than a certain threshold range, repeat these steps (i) through (iii);, '(c) performing an iterative process where each cycle of the iterative process comprises a pressurizing period during which the ...

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Номер записи: 78
04-08-2016 дата публикации

PRESERVATION OF WOOD, COMPOSITIONS AND METHODS THEREOF

Номер: US20160221211A1
Автор: Stark Joseph L.
Принадлежит:

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. 1. A method of preserving wood comprising:(a) contacting a wood with a solution of a pre-polymer and nonionic surfactant; and(b) curing the wood that has been contacted with the solution of prepolymer and nonionic surfactant; whereinthe method is conducted from about ambient atmospheric pressure to about 15 psig;the solution of prepolymer and nonionic surfactant comprises from about 2 wt % to about 20 wt % of the total weight of solution of the prepolymer and nonionic surfactant;the prepolymer is water soluble and capable of impregnating the wood, andthe curing step comprises heating the wood at temperatures above 25° C.2. The method of claim 1 , wherein the curing step comprises heating the wood at temperatures above 35° C.3. The method of claim 1 , wherein the solution of pre-polymer comprises an aqueous solution of phenol-formaldehyde prepolymer; wherein{'sub': 'w', 'the weight average molecular weight (MW) of the phenol-formaldehyde prepolymer is in the range of from about 125 to about 400.'}4. The method of claim 1 , wherein the nonionic surfactant comprises alkylpolyglycosides and ethoxylated alcohols.5. The method of claim 1 , wherein the pre-polymer is a water soluble pre-polymer in aqueous base.6. The method of claim 1 , wherein the method is conducted from about atmospheric pressure to about 10 psig.7. The method of claim 1 , wherein the method is conducted from about atmospheric pressure to about 5 psig.8. The method of claim 1 , wherein the method is conducted from about atmospheric pressure to about 1 psig.9. The method of claim 1 , wherein the solution of pre-polymer and ...

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Номер записи: 79
23-10-2014 дата публикации

Wood fibre acetylation

Номер: US20140311693A1
Автор: Benjamin Painter
Принадлежит: Titan Wood Ltd

Disclosed is a modified refiner system for the acetylation of wood chip and/or wood fibre. The invention comprises a process for the acetylation of wood chip in a refiner system including a feed hopper component, a non-steam digester component and a refiner (defibrator) component in which the chip is contacted with an acetylating fluid between the hopper and the digester components within a connecting multi-zone compression feed screw.

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Номер записи: 80
11-08-2016 дата публикации

APPARATUS FOR SHIPBOARD HEAT TREATING

Номер: US20160229079A1
Автор: CARRIER Larry, CHUTE Stephean C.
Принадлежит:

A shipboard apparatus () for heat treating wood chips, for service in the trade and for export to receivers within the forest products industries and the biomass energy sectors. The purpose of heat treating wood fiber is to provide certification to meet the phytosanitary requirements of wood fiber importing countries, infusion of moisture laden, saturated heated air using a closed loop system () within the holds of the ship with the heating apparatus being situated on the quay while the ship is being loaded with wood chips. The completed heat treating process renders the cargo acceptable for issuance of a phytosanitary certificate. 1. An apparatus for shipboard heat treating of green wood chips , said apparatus comprising:a heating device;ductwork operably connected to said heating device; andconduit for placement within a hold of a cargo vessel, said conduit connected to said ductwork;wherein said heating device provides heated air which saturates with moisture in the presence of green wood chips within said hold by way of said conduit.2. The apparatus as claimed in wherein said heated air heat transfer to said green wood chips sufficient to raise a core temperature of said green wood chips in excess of 56° Celsius for a period exceeding 30 minutes.3. The apparatus as claimed in wherein said ductwork penetrates through temporary hatch panels of said cargo vessel and said conduit within said hold includes two manifolds arranged opposite one another with piping there between.4. The apparatus as claimed in wherein said piping is interleaved and connected in an alternating pattern to each of said two manifolds.5. The apparatus as claimed in wherein said piping includes a first set of pipes located along a bottom portion of said hold claim 4 , a second set of pipes located adjacent a port side of said hold claim 4 , and a third set of pipes located adjacent a starboard side of said hold claim 4 , where said second set and said third set are vertically displaced from ...

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Номер записи: 81
10-08-2017 дата публикации

WOOD MODIFICATION TO ENHANCE FIRE RETARDANCY

Номер: US20170226424A1
Автор: MOON Ronald Philip
Принадлежит:

The co-formulation of a wood preservative (‘treated’) with an inorganic (alkali metal silicates) based flame retardant which undergoes chemical impregnation. Once the ‘treated flame retardant” working solution has fully penetrated (sapwood) into the wood, it then undergoes a heat (fixation) process using various heating schedules to achieve chemical fixation. The treated flame retardant Modified Wood [tfrMW] products are then tested for their enhanced fire performance properties. When heated, wood undergoes thermal degradation and combustion producing gases, vapours, tars & chars. Using the ‘cone calorimeter’ test method, the [tfrMW] products showed a significant reduction in the following parameters: heat release rate (HRR), mass loss rate (MLR) & smoke generated (SEA) values compared to untreated pine. 1. A process of imparting enhanced fire retardant properties to lignocellulosic material comprising of a wood preservative chemical(s) (referred to as ‘treated’) in combination with & without an alkali metal silicate (referred to ‘flame retardant’) that via a impregnation treatment process is infused into the cellular internal voids & then is polymerised via a heat process to produce an insoluble fixed ‘treated flame retardant Modified Wood’ [tfrMW] product.2. The product produced (′treated flame retardant Modified Wood) by the process of claim 1 , wherein the product(s) possess the property of increased fire retardancy3. The product produced by the process of claim 1 , wherein the ‘treated flame retardant Modified Wood claim 1 , [tfrMW] claim 1 , generates an incremental increase in durability4. The wood impregnation treatment process of claim 1 , wherein the pressure ranges from 50 to 3 claim 1 ,000 kpa & vacuum 0 to −90 kpa.5. The wood impregnation treatment process of claim 1 , wherein the chemical absorption (uptake) ranges from 15 to 1 claim 1 ,000 Litres/m3 (loading)6. The process claim 1 , wherein allows for wood preservative chemical & flame retardant in ...

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Номер записи: 82
26-08-2021 дата публикации

PARAFFIN-REINFORCED WOOD AND METHOD FOR MANUFACTURING THE SAME

Номер: US20210260788A1
Автор: JANG Du Sun, JEONG Man Serb
Принадлежит:

The present invention provides a paraffin-reinforced wood and a method for manufacturing the same, and more specifically, a paraffin-reinforced wood in which a natural wood is vacuum impregnated with dissolved paraffin and processed, thereby preventing a penetration of moisture into the wood and increasing durability and corrosion resistance of the wood, such that the reinforced wood is very useful as various deck-wood, agricultural wood posts, water wood posts, etc., and a method and apparatus for manufacturing the same. 1. A paraffin-reinforced wood comprising:a natural wood from which moisture, organic acid-containing cellulose, and volatile components are removed by drying and vacuum treatment; andparaffin impregnated into the natural wood,wherein the paraffin is impregnated in an entire internal tissue of the natural wood including pores inside the natural wood.2. The paraffin-reinforced wood according to claim 1 , wherein the natural wood is a square wood bar.3. The paraffin-reinforced wood according to claim 1 , wherein the natural wood is any one of larch claim 1 , pine claim 1 , oak claim 1 , apitong claim 1 , New Zealand pine or radiata pine.4. The paraffin-reinforced wood according to claim 1 , wherein the paraffin is contained in the natural wood in an amount of 2.0-50.0% by weight.5. A method for manufacturing a paraffin-reinforced wood according to claim 1 , the method comprising the steps of:cutting a natural wood;performing preheat treatment on the cut wood and drying the same;performing vacuum treatment on the dried wood by introducing it into a vacuum chamber;injecting dissolved liquid paraffin into a vacuum chamber to impregnate the vacuum-treated wood with the paraffin; andtaking-out the paraffin-impregnated wood and cooling the same.6. The method according to claim 5 , wherein the preheat treatment is performed by drying for 2-10 hours under a condition of 100-150° C. so as to dry up to a core of the wood.7. The method according to claim 5 , ...

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Номер записи: 83
26-08-2021 дата публикации

DENSIFIED WOOD INCLUDING PROCESS FOR PREPARATION

Номер: US20210260791A1
Автор: BEAKLER Brian W., Bjorkman Travis E., Marra Luke P.
Принадлежит:

A wood substrate or member is included, having an increased density with respect to natural, untreated wood. The process includes drying the wood prior to application of heat and pressure, which are controlled to reduce or eliminate color change on a surface of the wood member where heat and pressure are applied. 1. A method for increasing the density of a wood member including:(a) preheating a wood member, wherein the preheating is for a time sufficient to obtain a core temperature of the wood member of about 250° F. to about 500° F.;(b) optionally, applying water to a surface of the wood member;(c) after obtaining the core temperature of the wood member of about 250° F. to about 500° F., applying pressure to the wood member for a press time, wherein heat is applied during applying pressure to maintain the core temperature of about 250° F. to about 500° F.; and(d) providing a post-treatment conditioning of the wood member.2. The method of claim 1 , further comprising:cooling the wood member before the post-treatment conditioning.3. The method of claim 1 , wherein the post-treatment conditioning includes the introduction of steam claim 1 , humidity claim 1 , heat or combinations thereof.4. The method of claim 1 , wherein the moisture content of the wood member claim 1 , after preheating claim 1 , is between 0 to about 5%.5. The method of claim 1 , wherein the moisture content of the wood prior to pre-heating is about 0 to about 19%.6. The method of claim 1 , wherein said pressure is about 500 psi to about 5 claim 1 ,000 psi.7. The method of claim 1 , wherein the water is applied in the form of steam to the surface of the member.8. The method of claim 1 , wherein said press time is about 10 seconds to about 60 minutes.9. The method of claim 1 , wherein the applying pressure is conducted with a heated platen press claim 1 , a continuous press claim 1 , a series of mills claim 1 , or a combination thereof.10. The method of claim 1 , wherein the applying pressure is a ...

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Номер записи: 84
30-08-2018 дата публикации

BIOCIDAL MIXTURES

Номер: US20180242588A1
Автор: Jaetsch Thomas, Uhr Hermann
Принадлежит: LANXESS DEUTSCHLAND GMBH

The invention relates to biocidal mixtures comprising penflufen-containing polymer particles, copper compounds and specific alkanolamines and to the use thereof for protecting wood and wood products, and also to wood preservatives comprising biocidal mixtures and optionally further active ingredients. 1. A biocidal mixture comprising:penflufen-containing polymer particles,at least one alkanolamine selected from the group consisting of monoalkylmonoamines, monoalkyldiamines, dialkylamines and trialkylamines, substituted by one, two or three hydroxyl groups, andat least one copper compound or copper complexes of the alkanolamine.2. The biocidal mixture as claimed in claim 1 , wherein the penflufen-containing polymer particles comprise at least one styrene polymer claim 1 , styrene copolymer claim 1 , acrylic polymer or acrylic copolymer.3. The biocidal mixture as claimed in claim 1 , wherein the penflufen-containing polymer particles comprise at least one polyalkyl acrylate claim 1 , polyalkyl methacrylates claim 1 , or copolymers of alkyl acrylates and alkyl methacrylates.4. The biocidal mixture as claimed in claim 1 , wherein the penflufen-containing polymer particles are produced by radical oil-in-water emulsion polymerization wherein at least one ethylenically unsaturated monomer is polymerized in the presence of penflufen or its salts and acid addition compounds and in the presence of a radical initiator.5. The biocidal mixture as claimed in claim 4 , wherein the ethylenically unsaturated monomers are styrene claim 4 , divinylbenzene claim 4 , C-Calkyl acrylates claim 4 , C-Calkyl methacrylates claim 4 , or mixtures of these monomers.6. The biocidal mixture as claimed in claim 1 , wherein the copper compounds comprise water-soluble inorganic copper compounds.7. The biocidal mixture as claimed in claim 1 , wherein the copper compounds comprise copper sulfate claim 1 , copper acetate claim 1 , copper carbonate claim 1 , copper hydroxide claim 1 , copper borate ...

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Номер записи: 85
30-08-2018 дата публикации

Process for Preparing a Flame Retardant and/or Strengthened Fiberboard

Номер: US20180243936A1
Автор: Stahl Gerhard
Принадлежит:

In a process for the production of a flame retardant and/or strengthened fiberboard, a tailored fiberboard is charged on a processing device at first. Subsequently, a flame retardant and/or strengthening agent is applied to the top side of the fiberboard. The agent applied is sucked or pressed into the fiberboard. This is achieved by generating a pressure difference between the top side and bottom side of the fiberboard. 1. A process for producing a flame retardant fiberboard , comprising the steps of:charging a tailored fiberboard on a processing device;applying a flame retardant to a top side of the fiberboard, andgenerating a pressure difference between the top side and the bottom side of the fiberboard to suck or press the flame retardant into the fiberboard.2. The process according to claim 1 , wherein said flame retardant is applied together with a strengthening agent.3. The process according to claim 2 , wherein said flame retardant and said strengthening agent are applied jointly.4. The process according to claim 1 , wherein from 5 to 50 kg of flame retardant is applied per mof the fiberboard.5. The process according to claim 2 , wherein from 50 to 500 kg of strengthening agent is applied per mof the fiberboard.6. The process according to claim 2 , wherein said strengthening agent or said flame retardant is applied by spraying.7. The process according to claim 2 , wherein a reaction accelerating agent is applied to the top side of the fiberboard before the strengthening agent is applied thereto.8. The process according to claim 7 , wherein said reaction accelerating agent comprises water.9. The process according to claim 8 , wherein said reaction accelerating agent comprises more than 90% by weight of water.10. The process according to claim 7 , wherein from 3 to 5 grams of reaction accelerating agent is applied per mof the fiberboard.11. The process according to claim 7 , wherein said reaction accelerating agent is applied to the top side of the fiberboard ...

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Номер записи: 86
31-08-2017 дата публикации

METHOD FOR IMPREGNATION OF WOOD COMPONENT WITH SOLID PARAFFIN WAX, APPARATUS THEREFOR AND WOOD COMPONENT SO IMPREGNATED

Номер: US20170246653A1
Автор: RISI Benoit
Принадлежит: PROLAM, SOCIETE EN COMMANDITE

A method for treating a piece of wood impregnates the piece of wood with a water repellent, wherein the water repellent is solid at ambient temperatures. The method includes the steps of providing a piece of wood to be treated; heating the piece of wood for a predetermined period of time, the piece of wood being heated at a temperature A; subsequently immersing at least a portion of the piece of wood in a bath of liquefied water repellent, the bath being at a temperature B, for a predetermined period of time. Thereafter the piece of wood is removed from the bath and allowed to cool. The temperature A is above 100° C. and the temperature B is below 100° C. but above a liquefying point for the water repellent, and a differential between temperatures A and B is at least 60° C. 2. A method according to claim 1 , wherein said piece of wood is in the shape of a plank claim 1 , and wherein said portion of said piece of wood that is immersed is a length I of a surface of said plank at a maximum depth d.3. A method according to claim 2 , wherein said piece of wood is immersed in said water repelling solution at an angle determined by said length I and said depth d.4. A method according to claim 2 , wherein said bath of water repelling solution is liquid paraffin.5. A method according to claim 2 , wherein said water repellent bath further includes at least one additive.6. A method according to claim 5 , wherein said at least one additive is selected from the group consisting of anti-UV additives claim 5 , wood preservatives and colorants.7. A method according to claim 1 , wherein said method further includes the step of wiping off excess paraffin from said piece of wood after exiting said bath.8. A method according to claim 1 , wherein said method further includes the step of providing a conveyor for conveying said pieces of wood from a holding area claim 1 , towards and through said heating area and said bath.9. An apparatus for treating a piece of wood with a water ...

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Номер записи: 87
31-08-2017 дата публикации

METHODS AND SYSTEMS FOR LIMITING CARBON MONOXIDE OFF-GASSING

Номер: US20170246759A1
Автор: HOPKE Philip K., Rahman Mohammed Arifur
Принадлежит: CLARKSON UNIVERSITY

Methods and systems for treating wood byproducts, the method comprising the steps of: (i) providing a first quantity of wood byproducts in a first location; and (ii) exposing the first quantity of wood byproducts to ozone at a first concentration for a first time period, wherein the first concentration is configured to decrease the release of carbon monoxide from the first quantity of wood byproducts. 1. A method for treating wood byproducts , the method comprising the steps of:providing a first quantity of wood byproducts in a first location; andexposing the first quantity of wood byproducts to ozone at a first concentration for a first time period, wherein the first concentration is configured to decrease the release of carbon monoxide from the first quantity of wood byproducts.2. The method of claim 1 , wherein said first concentration of said ozone for said first time period is at least approximately 60 claim 1 ,000 ppm-minutes.3. The method of claim 1 , wherein the first concentration is configured to decrease the release of carbon monoxide from the first quantity of wood byproducts by at least approximately 90%.4. The method of claim 1 , wherein said wood byproducts are sawdust claim 1 , wood chips claim 1 , or wood pellets.5. The method of claim 1 , wherein said first location is a wood pellet mill.6. A method for treating wood byproducts claim 1 , the method comprising the steps of:providing a first quantity of wood byproducts in a first location; andexposing the first quantity of wood byproducts to ozone at a first concentration for a first time period, wherein said first concentration of said ozone for said first time period is at least approximately 60,000 ppm-minutes, and further wherein the first concentration is configured to decrease the release of carbon monoxide from the first quantity of wood byproducts by at least approximately 90%.7. The method of claim 6 , wherein said wood byproducts are sawdust claim 6 , wood chips claim 6 , or wood pellets.8. ...

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Номер записи: 88
30-08-2018 дата публикации

FLAME-RETARDANT, FIREPROOF, SEMI-INCOMBUSTIBLE PLYWOOD CEILING MATERIAL, AND METHOD FOR MANUFACTURING SAME

Номер: US20180245336A1
Автор: PARK Heejun
Принадлежит: Industrial Cooperation Foundation Chonbuk National University

The present invention relates to a fireproof, semi-incombustible ceiling material manufactured by perforating plywood and then pressure-injecting a flame-retardant or fireproof resin in a vacuum state, and to a method for manufacturing same. In the present invention, a fireproof resin may be injected in a short period of time along the fiber direction of wood through a hole perforated in plywood to minimize the stress applied to an adhesion layer. Moreover, shrinkage stress generated during drying due to reduced drying time may be reduced. Thus, since the inside of plywood can be impregnated with a fireproof resin in an amount sufficient to meet standards for fire safety, the present invention may provide a fireproof, semi-incombustible wood-based ceiling material. In addition, the ceiling material of the present invention utilizes pre-manufactured plywood, and is thus lightweight and high-strength, and may replace, in particular, asbestos-containing inorganic ceiling materials (gypsum board, etc.), which emit radon radiation and have poor resistance to humidity and moisture. Moreover, the ceiling material of the present invention uses wood-based plywood, and thus controls temperature and humidity, preserves beautiful natural wood grain patterns and coloring, and contributes to the improvement of indoor environments. Furthermore, the ceiling material of the present invention may manufacture a ceiling material having a uniform, plate-like structure with excellent dimensional stability, which is difficult to manufacture using wood. 1. A manufacturing method of incombustible and quasi-noncombustible ceiling materials comprising the steps of:perforating plywood to form a plurality of holes;transferring the perforated plywood to a vacuum chamber;injecting water-soluble phosphorus-based incombustible resin into the vacuum chamber by reducing pressure inside the vacuum chamber, thereby keeping the inside of the vacuum chamber in vacuum;infiltrating the incombustible resin ...

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Номер записи: 89
20-11-2014 дата публикации

PENTACHLOROPHENOL/BORATE COMPOSITIONS AND USES THEREOF

Номер: US20140342172A1
Автор: Murray Gordon
Принадлежит:

Disclosed is a wood preservative composition comprising: an ester of boric acid; pentachlorophenol (PCP); and American Wood Preservative Association's (AWPA) P9 Type A solvent. The composition is useful for reducing insect and microbial decay in wood. Further disclosed are methods of making and using such compositions. 1. A composition comprising:i) an ester of boric acid;ii) pentachlorophenol (PCP); andiii) American Wood Preservative Association's (AWPA) P9 Type A solvent.230-. (canceled)31. Wood coated with or immersed in a composition according to .32. (canceled)33. Wood treated according to the process of .34. (canceled)35. The composition of claim 1 , wherein the composition includes at least about 1 wt. % of the ester of boric acid; and about 1 to 20 wt. % of the pentachlorophenol.36. The composition of claim 1 , wherein the composition comprises at least about 3 wt. % of a reaction product of a mixture comprising C-Cmonoalkanolamine and boric acid.37. The composition of claim 1 , wherein the ester of boric acid comprises an alkanol claim 1 , alkenol claim 1 , and/or alkanolamine ester of boric acid.38. The composition of claim 1 , wherein the composition contains less than 2 wt. % water.39. The composition of claim 1 , wherein the ester of boric acid comprises a monoalkanolamine ester of boric acid.40. The composition of claim 1 , wherein the ester of boric acid comprises a monoethanolamine ester of boric acid.41. The composition of claim 40 , wherein the monoethanolamine ester of boric acid is a monoester claim 40 , diester and/or triester of boric acid.42. The composition of claim 1 , wherein the composition includes about 5 to 10 wt. % of the pentachlorophenol; and at least about 1 wt. % of a monoethanolamine ester of boric acid.43. The composition of claim 1 , wherein the AWPA P9 Type A solvent comprises diesel and biodiesel.44. The composition of claim 43 , wherein the AWPA claim 43 , P9 Type A solvent comprises at least about 50 wt % of the diesel claim ...

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Номер записи: 90
15-08-2019 дата публикации

PARTICULATE WOOD PRESERVATIVE AND METHOD FOR PRODUCING SAME

Номер: US20190246641A1
Автор: Horton John, Tham Peter, ZHANG JUN
Принадлежит:

A synergistic aqueous wood preservative composition comprising a copper compound and penflufen. The copper compounds of the compositions of the invention may be soluble, partially solubilized or micronized particles. The penflufen of the compositions of the invention may be solubilized, emulsified or particulate. The wood preservative compositions of the present invention are surprisingly provided as stable dispersions and confer surprising and unexpected resistance to treated wood and wood products. 196-. (canceled)97. Wood or a wood product comprising:a. a copper compound, andb. penflufen,{'sup': '3', 'in a copper:penflufen ratio between about 1:1 to about 500:1, and wherein the wood or the wood product contains the penflufen in an amount between about 4 to 200 g/m.'}98. The wood or wood product of claim 97 , wherein the wood or wood product further comprises an aqueous carrier.99. The wood or wood product of claim 97 , wherein the copper compound is micronized.100. The wood or wood product of claim 97 , wherein the penflufen is micronized.101. The wood or wood product of claim 99 , wherein the penflufen is micronized.102. The wood or wood product of claim 97 , wherein the wood or the wood product is resistant to fungal decay.103. The wood or wood product of claim 97 , wherein the combination of the copper and the penflufen synergistically resists fungal decay compared to the fungal resistance of copper alone and the fungal resistance of penflufen alone.104. The wood or wood product of claim 102 , wherein the copper compound is distributed within the wood or wood product.105. The wood or wood product of claim 104 , wherein the volume number density of the particulate copper compound 5 cm from the surface of the wood or wood product is at least about 50%.106. The wood or wood product of claim 97 , wherein the copper compound is selected from the group consisting of copper hydroxide claim 97 , cupric oxide claim 97 , cuprous oxide claim 97 , copper carbonate claim ...

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Номер записи: 91
15-08-2019 дата публикации

WOOD PRESERVATIVE AND METHOD FOR PRODUCING SAME

Номер: US20190246642A1
Автор: Horton John, Tham Peter, ZHANG JUN
Принадлежит:

A synergistic aqueous wood preservative composition comprising a copper compound and penflufen. The copper compounds of the compositions of the invention may be soluble, partially solubilized or micronized particles. The penflufen of the compositions of the invention may be solubilized, emulsified or particulate. The wood preservative compositions of the present invention are surprisingly provided as stable dispersions and confer surprising and unexpected resistance to treated wood and wood products. 196-. (canceled)97. A method of preparing a wood preservative composition comprising the steps of milling a slurry of penflufen and a dispersant in a carrier with a high density grinding media and diluting the slurry with the same or a different carrier to prepare a wood preservative composition or a concentrated wood preservative composition.98. The method of claim 97 , wherein the high density grinding media has a diameter between 0.01 and 5.0 mm.99. The method of claim 97 , wherein the high density grinding media has a diameter between 0.1 and 0.5 mm.100. The method of claim 97 , wherein the high density grinding media has a density of 2.5 g/cc or higher.101. The method of claim 97 , wherein the high density grinding media has a density of 3.5 g/cc or higher.102. The method of claim 97 , wherein the weight ratio of penflufen to dispersant is between about 1:500 to about 1000:1.103. The method of claim 97 , wherein the weight ratio of penflufen to dispersant between about 1:1 to about 100:1.104. The method of claim 97 , wherein the particles in the wood preservative composition have a particle size between about 5 to 5000 nanometers. This application is a divisional of U.S. patent application Ser. No. 15/840,877, filed Dec. 13, 2017, which claims priority to U.S. Provisional Application No. 62/435,504 filed Dec. 16, 2016, and U.S. Provisional Application No. 62/437,372 filed Dec. 21, 2016, each of which is incorporated by reference in its entirety herein.The present ...

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Номер записи: 92
15-08-2019 дата публикации

WOOD PRESERVATIVE AND METHOD FOR PRODUCING SAME

Номер: US20190246643A1
Автор: Horton John, Tham Peter, ZHANG JUN
Принадлежит:

A synergistic aqueous wood preservative composition comprising a copper compound and penflufen. The copper compounds of the compositions of the invention may be soluble, partially solubilized or micronized particles. The penflufen of the compositions of the invention may be solubilized, emulsified or particulate. The wood preservative compositions of the present invention are surprisingly provided as stable dispersions and confer surprising and unexpected resistance to treated wood and wood products. 196-. (canceled)97. A wood preservative composition comprising:a. a copper compound;b. penflufen; andc. an aqueous carrier;in a copper:penflufen ratio from about 1:1 to about 500:1.98. The wood preservative composition of claim 97 , wherein the wood preservative composition is a concentrate claim 97 , or a diluted treating solution.99. The wood preservative composition of claim 97 , wherein the copper compound is micronized.100. The wood preservative composition of claim 97 , wherein the penflufen is micronized.101. The wood preservative composition of claim 99 , wherein the penflufen is micronized.102. The wood preservative composition of claim 101 , further comprising a dispersant.103. The wood preservative composition of claim 101 , wherein the micronized copper and/or micronized penflufen in the wood preservative have a mean particle size between about 5 to 5000 nanometers.104. The wood preservative composition of claim 101 , wherein the wood preservative composition is a stable composition.105. The wood preservative composition of claim 104 , wherein the mean particle size of the micronized copper and/or micronized penflufen mixture in the wood preservative composition varies by less than 50 nanometers after storage from week one to 6 months at 24° C.106. The wood preservative composition of claim 97 , wherein the penflufen is emulsified.107. The wood preservative composition of claim 97 , wherein the penflufen is dissolved in the aqueous carrier by the addition of ...

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Номер записи: 93
21-09-2017 дата публикации

Surface-treating wood to prevent discoloration

Номер: US20170265471A1
Автор: Geoffrey Vern Webb
Принадлежит: Troy Corp

An aqueous dispersion of octylisothiazolinone (“OIT”) has been found to be useful for delivering OIT to wood for protecting the wood from fungal discoloration. The OIT dispersion can be applied to the wood to develop a protective barrier of relatively preservative at or near the exterior surface of the wood piece.

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Номер записи: 94
21-09-2017 дата публикации

Wood marking and identification

Номер: US20170266837A1
Автор: Barry Dean Haugen, Richard Wayne Greene, Stephen Edward Cavender
Принадлежит: Troy Corp

Wood markers and processes for durably marking and subsequently identifying both original grain wood products and wood-plastic composite products. The wood marker can be dispersed beneath the surface of the wood, where it is protected from the elements and may endure years of exposure to the elements. The wood marker is compatible with state-of-the-art pressure-treating processes and may subsequently be detected for authentication purposes by known analytical methods.

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Номер записи: 95
21-09-2017 дата публикации

METHODS FOR ENHANCING THE PRESERVATION OF CELLULOSIC MATERIALS AND CELLULOSIC MATERIALS PREPARED THEREBY

Номер: US20170266838A1
Автор: Brimhall Daniel
Принадлежит: American Chemet Corporation

Methods for treating cellulosic materials comprising introducing a liquid treating composition into the cellulosic material, the treating composition comprising a solution prepared from at least: (i) one or more of a copper amine complex or copper ammine complex, such as copper tetraamine carbonate, (ii) one or more of ammonia or a water-soluble amine and (iii) water; and exposing the cellulosic material provided thereby to carbon dioxide and/or carbonic acid to provide treated cellulosic material, and treated cellulosic materials prepared thereby.

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Номер записи: 96
13-08-2020 дата публикации

METHOD FOR PREPARING HYDROPHILIC WRITING SLICED BAMBOO VENEER

Номер: US20200254645A1
Автор: Lin Xinyan, YI Ning
Принадлежит:

Disclosed is a method for preparing a hydrophilic writing sliced bamboo veneer, including, in sequence, the following steps: (1) processing a sliced bamboo veneer into thin bamboo sheets with a thickness of 0.2-0.6 mm; (2) selecting the thin bamboo sheets with less color difference and fewer processing defects, and rolling the selected thin bamboo sheets on a plane; (3) performing deburring, sanding, and surface polishing on the rolled thin bamboo sheets; (4) performing mildewproofing and mothproofing treatment on the thin bamboo sheets; (5) performing surface coating treatment on the thin bamboo sheets using a coating material; (6) drying the coated thin bamboo sheets at low temperature; (7) fine-polishing the dried thin bamboo sheets; (8) cutting the thin bamboo sheets; and (9) flattening, compacting, and piling the cut thin bamboo sheets for future use. 1. A method for preparing a hydrophilic writing sliced bamboo veneer , comprising , in sequence , steps of:(1) processing a sliced bamboo veneer into thin bamboo sheets with a thickness of 0.2-0.6 mm;(2) selecting the thin bamboo sheets with less color difference and fewer processing defects, and rolling the selected thin bamboo sheets on a plane;(3) performing deburring, sanding, and surface polishing on the rolled thin bamboo sheets;(4) performing mildewproofing and mothproofing treatment on the thin bamboo sheets;(5) performing surface coating treatment on the thin bamboo sheets using a coating material;(6) drying the coated thin bamboo sheets at low temperature;(7) fine-polishing the dried thin bamboo sheets;(8) cutting the thin bamboo sheets; wherein the coating material used in Step (5) is prepared from a coupling agent, a stabilizing agent, and a penetrating agent and at beginning of preparation of the coating material, a volume ratio of the three agents is 60-70% of the coupling agent to 15-25% of the stabilizing agent to 10-15% of the penetrating agent, totaling 100%, and Step (5) further comprising steps ...

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Номер записи: 97
13-08-2020 дата публикации

TREATED POROUS MATERIAL

Номер: US20200254646A1
Автор: Chen Xue, King Stephen W.
Принадлежит:

The present disclosure describes 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 an olefin-carboxylic acid copolymer; and a modifying agent comprising an epoxy. 1. A treated cellulosic material comprising: a polymer comprising an olefin-carboxylic acid copolymer; and', 'a modifying agent comprising an epoxy., 'a cellulosic material having a porous structure defining a plurality of pores, at least a portion of the pores containing a treating agent comprising2. The treated cellulosic material of claim 1 , wherein at least a portion of the carboxylic acid groups of the copolymer are neutralized.3. The treated cellulosic material of claim 1 , wherein the olefin-carboxylic acid copolymer comprises claim 1 , in polymerized form claim 1 , a monomer selected from the group comprising ethylene claim 1 , propylene claim 1 , 1-butene claim 1 , 3-methyl-1-butene claim 1 , 4-methyl-1-pentene claim 1 , 3-methyl-1-pentene claim 1 , 1-heptene claim 1 , 1-hexene claim 1 , 1-octene claim 1 , 1-decene claim 1 , 1-dodecene claim 1 , butadiene claim 1 , styrene claim 1 , (meth)acrylic acid claim 1 , maleic acid claim 1 , maleic anhydride claim 1 , or a mixture thereof.4. The treated cellulosic material of claim 1 , wherein the olefin-carboxylic acid copolymer comprises claim 1 , in polymerized form claim 1 , a carboxylic acid monomer selected from the group comprising (meth)acrylic acid claim 1 , maleic acid or a mixture thereof.5. The treated cellulosic material of claim 1 , wherein the polymer comprises one or more polymers in addition to the olefin-carboxylic acid copolymer.6. The treated cellulosic material of claim 1 , wherein the modifying agent is an aromatic or aliphatic glycidyl ether or a glycidyl amine or a cycloaliphatic epoxy.7. The treated cellulosic material of claim 1 , wherein the modifying agent comprises a ...

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Номер записи: 98
18-12-2014 дата публикации

WOOD PRESERVATIVE

Номер: US20140370320A1
Автор: Humphrey David, Skewes Brett
Принадлежит:

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. 1. A preservative formulation for use in treating wood or other cellulosic materials , said formulation comprising:at least one azole fungicide;at least one metal compound having a biocidal effect; anda carrier,wherein the ratio of said at least one metal to said at least one azole fungicide is between about 5:1 and about 1:10 w/w.2. A formulation according to claim 1 , wherein the ratio of said at least one metal to said at least one azole fungicide is between about 3:1 and about 1:10 w/w.3. A formulation according to claim 1 , wherein the ratio of said at least one metal to said at least one azole fungicide is between about 1:3 and about 1:10 w/w.4. A formulation according to claim 1 , wherein the ratio of said at least one metal to said at least one azole fungicide is about 1:3.1 w/w.5. (canceled)6. A formulation according to claim 1 , wherein said carrier is aqueous claim 1 , solvent-based claim 1 , oil-based claim 1 , or a combination thereof.7. A formulation according to claim 1 , wherein said metal compound is a compound of a metal selected from the group consisting of: copper claim 1 , aluminium claim 1 , manganese claim 1 , iron claim 1 , cobalt claim 1 , nickel claim 1 , zinc claim 1 , silver claim 1 , cadmium claim 1 , tin claim 1 , antimony claim 1 , mercury claim 1 , lead and bismuth.8. A formulation according to claim 7 , wherein said metal compound is a compound of copper or zinc.9. A formulation according to claim 8 , wherein said copper compound is a copper(II) compound.10. A formulation according to claim 8 , wherein said copper or zinc ...

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Номер записи: 99
27-08-2020 дата публикации

METHOD FOR PREPARING ROOM TEMPERATURE CURED MULTIFUNCTIONAL WOOD MODIFIER AND METHOD FOR WOOD MODIFICATION

Номер: US20200269461A1
Автор: DONG XIAOYING, Li Yongfeng
Принадлежит:

The present invention relates to a method for preparing a wood modifier and a method for wood modification, and in particular, to a method for preparing a room temperature cured multifunctional wood modifier and a method for wood modification to solve the problems of high construction temperature, high toxicity, poor leaching-resistance and single function of existing wood modifiers. The method includes: step 1: weighing a hydrophobic polymer resin, an additive, a curing agent and a solvent, mixing and then stirring at room temperature to obtain a functional reagent A; step 2: weighing nanoparticles, a surface modifier and toluene, mixing and then stirring, cleaning with acetone, centrifuging, and drying to obtain a functional reagent B; step 3: adding a functional reagent C into the functional reagent A, evenly stirring, adding the functional reagent B, and performing ultrasonic processing to obtain the multifunctional wood modifier. 1. A method for preparing a room temperature cured multifunctional wood modifier , comprising the following steps:step 1: weighing 1%-50% of hydrophobic polymer resin, 0.1%-1% of additive, 0.1%-10% of curing agent and the balance solvent according to weight percent respectively, mixing and then stirring at room temperature for at least 2 h to obtain a functional reagent A;step 2: weighing 0.1%-5% of nanoparticles, 0.1%-2% of surface modifier and the balance toluene according to weight percent respectively, mixing and then stirring for 72-76 h, cleaning with acetone, centrifuging at 8000-9000 rpm for 3-5 times, and drying at 78-82° C. for 12-14 h to obtain a functional reagent B;step 3: adding a functional reagent C into the functional reagent A, evenly stirring, adding the functional reagent B, and performing ultrasonic processing for at least 30 min to obtain the multifunctional wood modifier, wherein the weight of the functional reagent B is 0.1%-1% that of the functional reagent A, and the weight of the functional reagent C is 0.2%- ...

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Номер записи: 100