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    • 4. 发明申请
    • POLYMER AND ITS PREPARATION AND USE
    • 聚合物及其制备与使用
    • WO2014079857A1
    • 2014-05-30
    • PCT/EP2013/074241
    • 2013-11-20
    • AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
    • ENGSTRÖM, Ulf Jonas AndersRESTORP, Per Anders
    • C08F220/56C08F220/58D21H21/18
    • D21H17/37C08F220/56C08F220/58D21H17/34D21H17/375D21H21/18
    • The present invention relates to a water-soluble cationic acrylamide-based polymer having one or more acetoacetate groups. The invention also relates to a method for producing the water-soluble polymer which comprises polymerizing ethylenically unsaturated monomers in an aqueous phase, wherein the monomers comprise (a) (meth)acrylamide, (b) ethylenically unsaturated cationic monomer, (c) ethylenically unsaturated monomer having one or more acetoacetate groups, and (d) optionally other ethylenically unsaturated monomer. The invention further relates to the use of the water-soluble polymer as a strength agent in the production of paper and board. The invention further relates to a process for producing paper and board which comprises providing an aqueous cellulosic suspension, adding to the suspension water-soluble polymer having one or more ketone groups, and dewatering the obtained suspension. The invention further relates to paper and board comprising the water-soluble polymer of the invention, as well as paper and board produced by the process of the invention.
    • 本发明涉及一种具有一个或多个乙酰乙酸酯基团的水溶性阳离子丙烯酰胺类聚合物。 本发明还涉及一种生产水溶性聚合物的方法,其包括在水相中聚合烯属不饱和单体,其中单体包括(a)(甲基)丙烯酰胺,(b)烯属不饱和阳离子单体,(c)烯属不饱和单体 具有一个或多个乙酰乙酸酯基团的单体,和(d)任选的其它烯属不饱和单体。 本发明还涉及在生产纸和纸板中使用水溶性聚合物作为强度剂。 本发明还涉及一种生产纸和纸板的方法,其包括提供水性纤维素悬浮液,向悬浮液中加入具有一个或多个酮基团的水溶性聚合物,并使得到的悬浮液脱水。 本发明还涉及包含本发明的水溶性聚合物的纸和纸,以及通过本发明的方法生产的纸和纸板。