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公开(公告)号：US12054001B2
公开(公告)日：2024-08-06
申请号：US17814144
申请日：2022-07-21
申请人： FABER-CASTELL AG
摘要： A process for the production of impregnated wood pieces for use in pencil production, and pencils with shafts including such impregnated wood pieces, wherein the process comprises two process stages, namely
a) a first process stage, comprising
a first impregnation step, in which an untreated wood piece is at least partially, impregnated with a first aqueous impregnating solution of an impregnating agent selected from the group consisting of 1,3-dimethylol-4,5-dihydroxyethylene urea or a derivative or modification thereof, and a catalyst, and
a subsequent curing step, in which the impregnated wood piece is cured in a hot steam atmosphere at an elevated temperature above 100° C., and
b) a second process stage comprising a second impregnation step, whereby the impregnated, cured wood piece is at least partially impregnated with a second aqueous impregnating solution of a wax emulsion paraffin based as an impregnating agent.-
公开(公告)号：US20230044862A1
公开(公告)日：2023-02-09
申请号：US17815501
申请日：2022-07-27
发明人： Terry Lyles , Michael Baughman
摘要： A protectant and sealant solution and method of use thereof, configured to protect wood from premature decay when disposed in contact with the earth. The solution is composed of processed hemp oil which is mixed with bio-diesel and other oils to form the protectant solution. The wood is then impregnated with the solution via pressure treatment within a retort cylinder. The solution is configured to protect utility poles and other wooden construction members which are known for prolonged contact with soil. The solution is designed as a safe replacement for pentachlorophenol solutions which have been found to be harmful to the soil and water table.
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公开(公告)号：US20230034800A1
公开(公告)日：2023-02-02
申请号：US17953095
申请日：2022-09-26
发明人： Daniel Brimhall
IPC分类号： B27K3/22 , B27K3/02 , B27K3/32 , B27K5/00 , B05D3/04 , B05D1/18 , B05D7/06 , B05D5/00 , B27K3/20 , B27K3/52 , B27K3/34 , B27K3/08
摘要： 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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公开(公告)号：US11370145B2
公开(公告)日：2022-06-28
申请号：US17018929
申请日：2020-09-11
摘要： 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.
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公开(公告)号：US20220176585A1
公开(公告)日：2022-06-09
申请号：US17652521
申请日：2022-02-25
申请人： TITAN WOOD LIMITED
摘要： A process for acetylation of wood having a density of above 400 kg/m3, 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.
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公开(公告)号：US11338468B2
公开(公告)日：2022-05-24
申请号：US16702770
申请日：2019-12-04
摘要： 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.
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公开(公告)号：US11254026B2
公开(公告)日：2022-02-22
申请号：US15781978
申请日：2016-12-07
申请人： Timothée Boitouzet
摘要： The invention relates to a process for treating a lignocellulosic material, preferably wood, comprising the following steps: (1) soaking of the material with organic fluid in order to dissolve at least 40% and at most 85%, in weight %, of the lignin of the material; (2) washing with organic fluid so as to discharge the dissolved lignin; (3) filling with a filling compound; and (4) finishing, so as to obtain a composite formed of a three-dimensional network of transformed filling compound incorporated into a cellulose and lignin network. The invention also relates to a composite structure able to be obtained in this way, and to any part comprising at least one such structure.
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公开(公告)号：US20220000115A1
公开(公告)日：2022-01-06
申请号：US17479503
申请日：2021-09-20
发明人： Jun Zhang , Peter Tham , John Horton
IPC分类号： A01N43/56 , B27K3/22 , B27K3/52 , B27K5/00 , B27K3/00 , B27K3/02 , B27K3/34 , A01N25/04 , A01N59/20 , B27K3/08 , B27K3/42 , B27K3/38
摘要： 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.
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公开(公告)号：US11161271B2
公开(公告)日：2021-11-02
申请号：US16799272
申请日：2020-02-24
发明人： Yongfeng Li , Xiaoying Dong
摘要： 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.
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公开(公告)号：US20200376707A1
公开(公告)日：2020-12-03
申请号：US16995954
申请日：2020-08-18
发明人： Kell Thomas
摘要： The present invention relates to improved methods of treating wooden materials. By the method of the invention, the wooden material is subjected to vacuum, overpressure and increased temperature, and subjected to ultrasound. Ultrasound is applied while the wooden material is covered by a liquid at a suitable overpressure and at a suitable temperature for a suitable period of time.
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