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    • 7. 发明申请
    • POLYMER AND USE THEREOF IN THE PRODUCTION OF PAPER AND BOARD
    • 聚合物及其在纸和纸板生产中的应用
    • WO2002095128A1
    • 2002-11-28
    • PCT/FI2002/000428
    • 2002-05-20
    • RAISIO CHEMICALS LTDTAMMI, Anna-LiisaNURMI, Kari
    • TAMMI, Anna-LiisaNURMI, Kari
    • D21H17/29
    • D21H17/29
    • As additive for the production of paper and board to improve the strength of a wet web a copolymer stabilized with a cationic polysaccharide is proposed in which copolymer an acrylamide of metacrylamide, vinylic craboxyl acid and optionally other vinylic monomers are used as monomers. The west strength of a web means the strength of a paper or board web during production at a dry solids content of 20-60%. The additive according to the invention improves, in addition to the wet strength of the web, also the surface resistance of the product. Compared to the additives of the prior art, a small relative ratio of the number of the side chains to the cationic groups is used, because a polysaccharide having a higher cationic character provides better stability.
    • 作为用于生产纸和纸板的添加剂,为了提高湿纸幅的强度,提出了用阳离子多糖稳定的共聚物,其中使用甲基丙烯酰胺,乙烯基异氰酸酯和任选的其它乙烯基单体的丙烯酰胺作为单体的共聚物。 网的西部强度意味着在干固体含量为20-60%的生产期间纸或纸板的强度。 根据本发明的添加剂除了纤维网的湿强度之外,还提高了产品的表面电阻。 与现有技术的添加剂相比,使用侧链数与阳离子基团的相对比例小,因为具有较高阳离子性质的多糖具有更好的稳定性。