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    • 20. 发明公开
    • METHOD FOR PRODUCING VINYL AMINE UNIT-CONTAINING POLYMER SOLUTION
    • VERFAHREN ZUR HERSTELLUNG EINERPOLYMERLÖSUNGMIT EINER VINYLAMINEINHEIT
    • EP2915823A1
    • 2015-09-09
    • EP13851445.0
    • 2013-10-31
    • Mitsubishi Rayon Co., Ltd.
    • ISHII, AkihiroMORI, Yasuharu
    • C08F8/12C08F26/02C08F216/14C08K3/00C08K5/00
    • C08K5/41C08F8/12C08F26/02C08F216/14C08K3/30C08K3/38D21H17/375D21H21/10
    • Provided is a method for efficiently producing on an industrial scale a high-performance polyvinylamine solution having good handling properties. After producing a polymer containing N-vinylcarboxamide monomer units having a value of the weight average molecular weight (Mw)/number average molecular weight (Mn) of 5 or higher by aqueous solution standing adiabatic polymerization, the polymer is hydrolyzed in an aqueous solvent in the presence of an alkali and an antigelling agent. In a preferred embodiment of the present invention, a polymer powder having a volatile content of 0.1-12% by mass is obtained by drying and pulverizing after producing a (co)polymer, and the powder obtained is stored or transported to the site of use of the polymer solution and hydrolyzed in an aqueous solvent in the presence of an alkali and an antigelling agent when the polymer solution is needed or at the site of use of the polymer solution.
    • 提供了一种在工业规模上有效地生产具有良好处理性能的高性能聚乙烯胺溶液的方法。 在通过水溶液静置绝热聚合制备含有重均分子量(Mw)/数均分子量(Mn)值为5以上的N-乙烯基甲酰胺单体单元的聚合物后,将聚合物在含水溶剂中水解 碱和抗凝胶剂的存在。 在本发明的优选实施方案中,通过在制备(共)聚合物之后通过干燥和粉碎获得挥发物含量为0.1-12质量%的聚合物粉末,并将获得的粉末储存或运输到使用地点 的聚合物溶液,并且当需要聚合物溶液时或在聚合物溶液的使用位置时,在碱和抗凝胶剂的存在下,在水性溶剂中水解。