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    A CONTINUOUS PROCESS FOR THE PRODUCTION OF A SUPERABSORBENT POLYMER
    1.
    发明公开
    A CONTINUOUS PROCESS FOR THE PRODUCTION OF A SUPERABSORBENT POLYMER 有权
    连续法生产高吸水性聚合物

    公开(公告)号：EP2341950A1

    公开(公告)日：2011-07-13

    申请号：EP09818792.5

    申请日：2009-10-01

    申请人： Evonik Stockhausen GmbH

    发明人： FRICKER, Daniel ,  GARTNER, Herbert, Alfons ,  HAGER, Marc ,  HARREN, Jörg ,  KOHLER, Hans-Peter ,  PLÖCHINGER, Harald

    IPC分类号： A61L15/60 ,  C08F2/10 ,  C08F20/06 ,  C08J11/00

    CPC分类号： C08F2/10 ,  C08F4/40 ,  C08F220/06 ,  C08F222/1006 ,  C08L101/14

    摘要： The present invention relates to a continuous process for the production of a superabsorbent polymer comprising: (a) providing an acidic liquid aqueous monomer mixture containing dissolved oxygen, whereby the monomers are selected to provide after polymerization a superabsorbent polymer, (b) continuously feeding said aqueous monomer mixture to a reactor, (c) introducing a source of carbonate or hydrogen carbonate into said aqueous monomer mixture prior to entry into the reactor thereby forming a gas phase comprising carbon dioxide and at least a part of said dissolved oxygen, said gas phase being dispersed in the liquid phase, (d) subjecting the gas/liquid mixture to at least partial phase separation immediately prior to or after entry into the reactor and at least partially removing the separated gaseous phase, (e) subjecting the liquid phase in the reactor to free-radical polymerization to obtain the superabsorbent polymer, and (f) continuously removing the superabsorbent polymer from the reactor.

    A PROCESS FOR THE PRODUCTION OF A SUPERABSORBENT POLYMER
    2.
    发明公开
    A PROCESS FOR THE PRODUCTION OF A SUPERABSORBENT POLYMER 有权
    生产超吸收性聚合物的方法

    公开(公告)号：EP2341949A1

    公开(公告)日：2011-07-13

    申请号：EP09818793.3

    申请日：2009-10-01

    申请人： Evonik Stockhausen GmbH

    发明人： FRICKER, Daniel ,  GARTNER, Herbert, Alfons ,  HAGER, Marc ,  HARREN, Jörg ,  KOHLER, Hans-Peter ,  PLÖCHINGER, Harald

    IPC分类号： A61L15/60 ,  C08F2/10 ,  C08F20/06 ,  C08J11/00

    CPC分类号： C08F2/10 ,  C08F4/40 ,  C08F220/06 ,  C08F222/1006 ,  C08L101/14

    摘要： The present invention relates to a process for the production of a superabsorbent polymer comprising: (a) preparing an aqueous mixture of monomers selected to provide after polymerization a superabsorbent polymer, (b) feeding said monomer mixture to a reactor, (c) subjecting the aqueous monomer mixture in the reactor to free-radical polymerization to obtain a superabsorbent polymer gel, and (d) removing the superabsorbent polymer from the reactor, (e) working-up the superabsorbent polymer removed from the reactor to obtain a final product, whereby a basic aqueous medium comprising carbonate and/or hydrogen carbonate is fed to the superabsorbent polymer gel.

    摘要翻译： 本发明涉及制备超吸收性聚合物的方法，其包括：（a）制备选择用于聚合后提供超吸收性聚合物的单体的含水混合物，（b）将所述单体混合物加入到反应器中，（c） 将含水单体混合物在反应器中进行自由基聚合以获得超吸收性聚合物凝胶，和（d）从反应器中除去超吸收性聚合物，（e）处理从反应器除去的超吸收性聚合物以获得最终产物，由此 将包含碳酸盐和/或碳酸氢盐的碱性含水介质加入超吸收性聚合物凝胶中。