アセチル化木材およびその製造方法

    公开(公告)号:JP2021527577A

    公开(公告)日:2021-10-14

    申请号:JP2020555770

    申请日:2018-04-13

    Abstract: 本開示は、木材のアセチル化の工程である。アセチル化される木材は、最初に抽出ステップにかけられる。結果として得られた抽出木材は、特に減少したヘミセルロース含有量を有する。この抽出木材は、アセチル化剤との接触にかけられる。抽出は、例えば、水、アセトン、エタノール、メタノール、または酢酸である抽出流体によって行われ得る。水は水道水または脱塩水などの純粋な水であってもよく、希薄塩溶液(例えば、シュウ酸アンモニウムまたは亜硫酸ナトリウムを含む水)であってもよい。熱水抽出が好ましい。結果として得られたアセチル化された抽出木材、特に木質要素は、従来のアセチル化木材より低いアセチル基含有量で、所望の膨潤挙動を有する。木材は、木質要素、無垢木材の、または合板という形であってもよい。 【選択図】なし

    METHOD FOR CONTINUOUS ACETYLATION OF WOOD ELEMENTS
    7.
    发明申请
    METHOD FOR CONTINUOUS ACETYLATION OF WOOD ELEMENTS 审中-公开
    木质元素连续乙酰化方法

    公开(公告)号:WO2016166180A1

    公开(公告)日:2016-10-20

    申请号:PCT/EP2016/058150

    申请日:2016-04-13

    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.

    Abstract translation: 本发明涉及木质元素的连续乙酰化方法。 在基本上不含氧的环境中,乙酰化在至少1.5barg的压力下用乙酰化介质进行。 或者,根据本发明的方法包括以下步骤:(a)将木质元素在基本上不含氧的环境中进料到连续乙酰化反应器,和(b)在木材下的连续乙酰化反应器中用乙酰化培养基处理木质元素 乙酰化反应条件,压力至少为1.5巴。 根据本发明的方法允许以非常有效的方式将木质元素乙酰化成高乙酰基含量,而不会影响材料的质量。 乙酰化木质元素可用于生产具有优良品质如中等密度纤维板的尺寸稳定性和耐久性。

    METHOD FOR THE MODIFICATION OF WOOD
    9.
    发明申请
    METHOD FOR THE MODIFICATION OF WOOD 审中-公开
    修改木材的方法

    公开(公告)号:WO2015173226A1

    公开(公告)日:2015-11-19

    申请号:PCT/EP2015/060449

    申请日:2015-05-12

    Abstract: 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.

    Abstract translation: 公开了一种连续浸渍诸如木片的木质元素的方法。 该方法包括以下步骤:使木质元件真空,与乙酰化液接触,并进行浸渍压力。 优选地,该方法在具有输送机(诸如输送螺杆)的设备中进行,处于进行后续处理步骤的区域之间的适当位置。 浸渍方法用于木质元素的乙酰化,优选在进行浸渍的区域下游的乙酰化反应区中进行连续的乙酰化过程。

    ACETYLATED WOOD AND METHOD OF MAKING SAME
    10.
    发明申请

    公开(公告)号:WO2019197041A1

    公开(公告)日:2019-10-17

    申请号:PCT/EP2018/059562

    申请日:2018-04-13

    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.

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