COMPOSITION AND PROCESS FOR INCREASING THE DRY STRENGTH OF A PAPER PRODUCT
    4.
    发明申请
    COMPOSITION AND PROCESS FOR INCREASING THE DRY STRENGTH OF A PAPER PRODUCT 审中-公开
    增加纸张干燥强度的组合物和方法

    公开(公告)号:WO2012067877A1

    公开(公告)日:2012-05-24

    申请号:PCT/US2011/059580

    申请日:2011-11-07

    IPC分类号: D21H21/18

    摘要: A dry strength additive composition generally includes an anionic and/or amphoteric polyacrylamide having a molecular weight of less than 1,000,000 Daltons, wherein the amphoteric polyacrylamide has a net negative charge; a cationic and/or amphoteric starch; and a cationic non-starch polymer having a charge density greater than 1 milliequivalent per gram (meq/g) at a pH of 3. The components defining the composition can be added to a pulp suspension sequentially or as a pre-blended mixture.

    摘要翻译: 干强度添加剂组合物通常包括分子量小于1,000,000道尔顿的阴离子和/或两性聚丙烯酰胺,其中两性聚丙烯酰胺具有净负电荷; 阳离子和/或两性淀粉; 和阳离子非淀粉聚合物,其pH值为3,电荷密度大于1毫当量(meq / g)。限定组合物的组分可以顺序地或作为预混合混合物加入到纸浆悬浮液中。