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31 条记录 (耗时 0.021 秒)

    Intermediate product for preparation of lignin polymers and use thereof for production of wood materials
    1.
    发明授权
    Intermediate product for preparation of lignin polymers and use thereof for production of wood materials 失效
    用于制备木质素聚合物的中间产物及其用于生产木材的用途

    公开(公告)号：US06280855B1

    公开(公告)日：2001-08-28

    申请号：US09341578

    申请日：1999-10-25

    申请人： Liisa Viikari ,  Anneli Hase ,  Pia Qvintus-Leino ,  Marja-Leena Niku-Paavola

    发明人： Liisa Viikari ,  Anneli Hase ,  Pia Qvintus-Leino ,  Marja-Leena Niku-Paavola

    IPC分类号： B32B2106

    CPC分类号： C08H6/00 ,  C08L97/02 ,  C12P7/22 ,  Y10T428/31982 ,  C08L2666/26

    摘要： The invention relates to an intermediate product for the preparation of polymerizates from lignin derivatives obtained from the cellulose industry. The intermediate product is produced by treating the lignin derivatives with enzymes capable of oxidizing phenol in the presence of oxidizing agents. According to the invention the lignin derivatives are subjected to the enzymatic treatment for more than 3 hours in the presence of air, or they are subjected to an enzymatic treatment for more than 10 min, whereby air or oxygen is introduced. The lignin polymers obtained from the polymerization of lignin derivatives performed in the presence of active intermediate products are suited for use in the production of binding agents for wood materials.

    摘要翻译： 本发明涉及从纤维素工业得到的木质素衍生物制备聚合物的中间产物。 通过在氧化剂存在下用能够氧化苯酚的酶处理木质素衍生物来生产中间产物。 根据本发明，木质素衍生物在空气存在下进行酶处理超过3小时，或者进行酶处理超过10分钟，从而引入空气或氧气。 在活性中间产物存在下进行的木质素衍生物的聚合得到的木质素聚合物适用于生产木质材料的粘合剂。

    Process for preparing fiber boards
    2.
    发明授权
    Process for preparing fiber boards 失效
    纤维板制备工艺

    公开(公告)号：US06245269B1

    公开(公告)日：2001-06-12

    申请号：US09341538

    申请日：1999-10-13

    申请人： Liisa Viikari ,  Pia Qvintus-Leino ,  Marja-Leena Niku-Paavola ,  Simo Tuominen ,  Lars Gädda

    发明人： Liisa Viikari ,  Pia Qvintus-Leino ,  Marja-Leena Niku-Paavola ,  Simo Tuominen ,  Lars Gädda

    IPC分类号： B29C6700

    CPC分类号： D21J1/00 ,  C08L97/02 ,  D21F1/66 ,  C08L2666/26 ,  C08L2666/02

    摘要： A process for manufacturing fiber boards and similar wood-based products from a lignocellulosic raw material having a moisture content of at least 10 wt-%. According to the process, an aqueous fraction is separated from the fibers of the raw material, which fraction later is recycled to the process in order to form at least a part of the agent used for binding the fibers. Before mixing with the fibers, the aqueous effluent is concentrated and enzymatically oxidized in the presence of oxygen in order to polymerize the solubilized wood material and in order to increase its concentration. Lignin can be added to the water solubilized wood material or the solubilized wood material can be added to the fibers together with another binder. Eventually, the mixture is formed into a board and hardened.

    摘要翻译： 一种从水分含量至少为10重量％的木质纤维素原料制造纤维板和类似木制品的方法。 根据该方法，将水性馏分与原料的纤维分离，该馏分随后再循环到该方法中，以便形成用于粘合纤维的试剂的至少一部分。 在与纤维混合之前，将含水流出物浓缩并在氧气存在下酶促氧化，以便使溶解木材材料聚合并增加其浓度。 可以将木质素加入到水溶性木材中，或者将可溶的木质材料与另一种粘合剂一起加入到纤维中。 最终，混合物形成板并硬化。

    Adhesive for fiber boards
    3.
    发明授权
    Adhesive for fiber boards 失效
    纤维板粘合剂

    公开(公告)号：US06287708B1

    公开(公告)日：2001-09-11

    申请号：US09341579

    申请日：1999-11-09

    申请人： Liisa Viikari ,  Anneli Hase ,  Pia Qvintus-Leino ,  Kirsi Kataja ,  Simo Tuominen ,  Lars Gädda

    发明人： Liisa Viikari ,  Anneli Hase ,  Pia Qvintus-Leino ,  Kirsi Kataja ,  Simo Tuominen ,  Lars Gädda

    IPC分类号： B32B326

    CPC分类号： D21J1/00 ,  B27N3/002 ,  C08L97/02 ,  C09J197/02 ,  Y10T428/31982 ,  C08L2666/26

    摘要： An adhesive binder for bonding together lignocellulosic particles, fibers and flakes of vegetable origin to form particle boards, fiber boards, flake boards and similar wood-based products, comprising a solublized fraction obtained by enzymatic treatment of fibrous, lignocellulosic raw materials. The present binder can be obtained by treating fibrous lignocellulosic raw material with a hydrolytic enzyme in an aqueous medium, recovering the solubilized material of the enzymatic treatment, forming an aqueous suspension containing said material and an oxidase, and oxidizing said material in the presence of said oxidase by introducing oxygen-containing gas into the supension. This method thus produces an increased amount of a water-soluble fraction containing carbohydrates, extractives and lignin useful as an adhesive binder.

    摘要翻译： 用于将植物来源的木质纤维素颗粒，纤维和薄片粘合在一起的粘合剂粘合剂，以形成颗粒板，纤维板，薄片板和类似的木制产品，其包含通过纤维状木质纤维素原料的酶处理获得的溶解级分。 本发明的粘合剂可以通过在水性介质中用水解酶处理纤维状木质纤维素原料，回收酶处理的溶解物质，形成含有所述物质和氧化酶的含水悬浮液，并在所述物质存在下氧化所述物质 通过将含氧气体引入到超声中来进行氧化。 因此，该方法产生增加量的含有可用作粘合剂粘合剂的碳水化合物，提取物和木质素的水溶性级分。

    Process for concentrating soluble and colloidal substances in process waters
    10.
    发明授权
    Process for concentrating soluble and colloidal substances in process waters 失效
    将可溶性和胶态物质浓缩在工艺用水中的方法

    公开(公告)号：US06425975B1

    公开(公告)日：2002-07-30

    申请号：US09743635

    申请日：2001-03-14

    申请人： Liisa Viikari ,  Annikka Mustranta ,  Leena Fagernäs

    发明人： Liisa Viikari ,  Annikka Mustranta ,  Leena Fagernäs

    IPC分类号： D21C1100

    CPC分类号： D21C11/0021 ,  C02F3/342 ,  C02F11/12 ,  C02F2103/28 ,  D21C3/22

    摘要： The invention relates to a process for enhancing the concentration of the fiber derived dissolved and colloidal substances in process water that comes from mechanical pulping. According to the invention, process water is treated with enzyme preparations that have an effect on carbohydrates and that contain mannanase and/or endoglucanase, in particular, which break down the soluble carbohydrate polymers contained by the process water into low molecular weight oligosaccharides. The treatment prevents an increase in viscosity so that process water can be concentrated into a high dry content, or the treatment can be used to lower the viscosity of previously concentrated process water to facilitate after-treatment.

    摘要翻译： 本发明涉及一种提高来自机械制浆的工艺水中纤维衍生的溶解和胶态物质浓度的方法。 根据本发明，处理水用对碳水化合物具有影响并且含有甘露聚糖酶和/或内切葡聚糖酶的酶制剂进行处理，特别是将工艺水中含有的可溶性碳水化合物聚合物分解成低分子量寡糖。 该处理防止粘度增加，使得工艺水可以浓缩成高的干燥含量，或者可以使用处理来降低先前浓缩的工艺水的粘度以便于后处理。