发明名称 |
PROCESS FOR INCREASING THE CHARGE ON A LIGNOCELLULOSIC MATERIAL, PRODUCT OBTAINABLE BY THE PROCESS, AND USE OF THE PRODUCT IN THE PREPARATION OF A LIGNOCELLULOSE-BASED PRODUCT |
摘要 |
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.
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申请公布号 |
WO9729237(A1) |
申请公布日期 |
1997.08.14 |
申请号 |
WO1997DK00052 |
申请日期 |
1997.02.07 |
申请人 |
NOVO NORDISK A/S;PEDERSEN, LARS, SAABY;FELBY, CLAUS;MUNK, NIELS |
发明人 |
PEDERSEN, LARS, SAABY;FELBY, CLAUS;MUNK, NIELS |
分类号 |
C12N1/14;C12S3/04;D21C5/00;D21C9/00;D21H11/12;D21H11/20;D21H17/00;D21H17/06;D21H17/14;(IPC1-7):D21H11/20 |
主分类号 |
C12N1/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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