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    Acetylated Wood and Method of Making Same
    11.
    发明申请
    Acetylated Wood and Method of Making Same 有权

    公开(公告)号：US20210154883A1

    公开(公告)日：2021-05-27

    申请号：US17046857

    申请日：2018-04-13

    Applicant: Tricoya Technologies Ltd

    Inventor： Theodorus Gerardus Marinus Maria Kappen ,  Stefan Van Dommele

    IPC: B27K3/34 ,  B27K3/02 ,  C08H8/00

    Abstract: Disclosed is a process for the acetylation of wood. The wood to be acetylated is first subjected to an extraction step. The resulting extracted wood particularly has a reduced hemicellulose content. This extracted wood is subjected to contact with an acetylation agent. The extraction can be done with an extraction fluid which is, e.g., water, acetone, ethanol, methanol, or acetic acid. The water can be pure water, such as tap water or demineralised water, or it can be a dilute salt solutions (e.g. water containing ammonium oxalate or sodium sulphite). Hot water extraction is preferred. The resulting acetylated extracted wood, particularly wood elements, have a desirable swelling behaviour at lower acetyl contents than conventional acetylated wood. The wood can be in the form of wood elements, solid wood, or wood veneers.

    PROCESS FOR THE ACETYLATION OF WOOD
    15.
    发明申请
    PROCESS FOR THE ACETYLATION OF WOOD 审中-公开

    公开(公告)号：US20170203467A1

    公开(公告)日：2017-07-20

    申请号：US15326194

    申请日：2015-07-16

    Applicant: Tricoya Technologies Ltd

    Inventor： Bernardus Jozef Maria Pol ,  Theodorus Gerardus Marinus Maria Kappen

    IPC: B27K3/02 ,  C08H8/00 ,  B27K3/34

    Abstract: Disclosed is a process for the acetylation of wood, wherein the wood is impregnated with acetylation fluid and heated in stages. It is thereby secured that an acetylation reaction is conducted at a temperature above the boiling temperature of the acetylation fluid, at a stage where the impregnated wood is largely devoid of free acetylation fluid (i.e., acetylation fluid not retained in the wood matrix or in capillaries). Preferably, the process is conducted in a plant having conveyors, such as transportation screws, in the zones in which the separate heating steps are conducted.

    METHOD FOR CONTINUOUS ACETYLATION OF WOOD ELEMENTS
    18.
    发明申请
    METHOD FOR CONTINUOUS ACETYLATION OF WOOD ELEMENTS 有权

    公开(公告)号：US20220274281A1

    公开(公告)日：2022-09-01

    申请号：US17652550

    申请日：2022-02-25

    Applicant: TRICOYA TECHNOLOGIES LTD

    Inventor： Stephen John Benstead ,  Theodorus Gerardus Marinus Maria Kappen

    IPC: B27K3/34 ,  B27K3/02 ,  C08H8/00 ,  B27K3/08 ,  B27K5/00 ,  C08B3/06

    Abstract: 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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