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公开(公告)号：US20230124750A1
公开(公告)日：2023-04-20
申请号：US18145389
申请日：2022-12-22
申请人： TITAN WOOD LIMITED
发明人： Bernardus Jozef Maria Pol , Stefan VAN DOMMELE , Paul Bussemaker , Benjamin Painter , Gerrit Arie De Wit , Theodorus Gerardus Marinus Maria Kappen
摘要： The invention is directed to a process for the continuous acetylation of wood elements. The process particularly combines a batchwise impregnation step, with a continuous reaction step. In order to realize this, a collection step is built-in, so as to allow batches of impregnated wood elements to be fed into a reactor in a continuous manner. Very high acetylation contents can be obtained, at a level that had not been achievable before in a continuous and non-catalyzed acetylation process.
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公开(公告)号：US20230029556A1
公开(公告)日：2023-02-02
申请号：US17864763
申请日：2022-07-14
申请人： Jiaqi Dai , Yelizaveta Pikus , The United States, as represented by the Secretary of Agriculture
发明人： Junyong Zhu , Roland Gleisner , Riley Simson , Jiaqi Dai , Yelizaveta Pikus
摘要： Methods for producing structural materials from lumber are provided. The methods use an oxygen pre-treatment or a carbonate pre-treatment followed by densification via thermal compression to produce structural materials with strong mechanical properties. The pre-treatments are able to partially delignify the lumber without substantially adversely affecting the mechanical properties of the subsequently densified wood.
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公开(公告)号：US20220274281A1
公开(公告)日：2022-09-01
申请号：US17652550
申请日：2022-02-25
摘要： 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.
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公开(公告)号：US20220240510A1
公开(公告)日：2022-08-04
申请号：US17721909
申请日：2022-04-15
申请人： Troy Corporation
发明人： Geoffrey Vern Webb
IPC分类号： A01N43/80 , A01N25/30 , A01N25/04 , C09D5/14 , B05D1/18 , B05D7/06 , B27K3/34 , C09D7/45 , C09D7/40 , C09D7/63 , C09D7/20 , B27K3/08 , B27K3/50
摘要： An aqueous dispersion of octylisothiazolinone 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 preservative relatively at or near the exterior surface of the woodpiece.
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公开(公告)号：US11383402B2
公开(公告)日：2022-07-12
申请号：US17028046
申请日：2020-09-22
发明人： Haixia Yu , Manping Xu , Wenfu Zhang , Xiaowei Zhuang , Jin Wang , Xin Pan
摘要： 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.
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公开(公告)号：US11376758B2
公开(公告)日：2022-07-05
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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公开(公告)号：US20220118646A1
公开(公告)日：2022-04-21
申请号：US17310373
申请日：2020-02-03
摘要： Disclosed is a board made from acetylated mbberwood elements and a method for making same. The acetylated rubberwood elements have an acetyl content of at least 17% and/or are prepared by acetylating mbberwood elements using an acetylation agent in the vapour phase. The invention also pertains to acetylated rubberwood elements prepared by using an acetylation agent in the vapour phase.
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公开(公告)号：US11285633B2
公开(公告)日：2022-03-29
申请号：US15564979
申请日：2016-04-13
摘要： 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.
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公开(公告)号：US11260555B2
公开(公告)日：2022-03-01
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：US11072086B2
公开(公告)日：2021-07-27
申请号：US16103387
申请日：2018-08-14
发明人： Md Sayful Islam , Jun Zhang
IPC分类号： B27K5/00 , B27K5/02 , B27K3/00 , C09D15/00 , C09C1/00 , B27K3/22 , B27K3/52 , B27K3/26 , B27K3/02 , B27K3/08 , B27K3/34
摘要： 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.
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