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    • 7. 发明授权
    • Process for increasing the charge on a lignocellulosic material
    • 增加木质纤维素材料上的电荷的方法
    • US06187136B1
    • 2001-02-13
    • US09118409
    • 1998-07-17
    • Lars Saaby PedersenClaus FelbyNiels Munk
    • Lars Saaby PedersenClaus FelbyNiels Munk
    • D21C9147
    • D21C9/005D21C5/005D21H11/12D21H11/20D21H17/005D21H17/06D21H17/14
    • A process for production of a lignocellulosic material modified by conjugation thereto of a phenolic substance comprising a substituent which, in the conjugated form of the phenolic substance, is, or may become, negatively or positively charged, respectively, comprises: reacting a lignocellulosic fibre material and the phenolic substance with an oxidizing agent in the presence of an enzyme capable of catalyzing the oxidation of phenolic groups by the oxidizing agent; and reacting together the products of the reactions; with the proviso that the phenolic substance is not a phenolic polysaccharide. A strengthened lignocellulose-based product (e.g. a paper product) may be prepared by a procedure wherein a product produced in accordance with the latter process is treated with a strengthening agent having an ionic charge of sign opposite to that which is conferred on the modified lignocellulosic material by the charge-conferring substituent.
    • 一种生产木质纤维素材料的方法,该木质纤维素材料通过与酚物质缀合而改性,该酚类物质包含以共轭形式的酚类物质分别为负性或带正电荷的取代基,包括:将木质纤维素纤维材料 和在能够催化由氧化剂氧化酚基的酶的存在下使用氧化剂的酚类物质; 并使反应产物一起反应; 条件是酚类物质不是酚多糖。 加强的木质素纤维素基产品(例如纸制品)可以通过以下程序制备,其中根据后一方法生产的产品用具有与赋予改性木质纤维素的离子电荷相反的符号的离子电荷的强化剂处理 材料通过电荷赋予取代基。