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    Process for crosslinking hydrogels with bis- and poly-2- oxazolidinones
    93.
    发明授权
    Process for crosslinking hydrogels with bis- and poly-2- oxazolidinones 有权
    用双 - 和多 - 2-恶唑烷酮交联水凝胶的方法

    公开(公告)号：US06472478B1

    公开(公告)日：2002-10-29

    申请号：US09601349

    申请日：2000-08-18

    Applicant: Rüdiger Funk ,  Volker Frenz ,  Ulrich Riegel ,  Matthias Weismantel ,  Fritz Engelhardt ,  Thomas Daniel

    Inventor： Rüdiger Funk ,  Volker Frenz ,  Ulrich Riegel ,  Matthias Weismantel ,  Fritz Engelhardt ,  Thomas Daniel

    IPC: C08F830

    CPC classification number: A61L15/60 ,  C08F8/30 ,  Y10S524/916 ,  Y10T442/699

    Abstract: The invention relates to a process for the gel or surface postcrosslinking of water-absorbing polymers in which the polymers are treated with a surface postcrosslinking solution and during or after the treatment are postcrosslinked and dried by means of an increase in temperature, the crosslinker being a compound of the formula in which R1 and R2 independently of one another are H, hydroxyl, phenyl or C1-C6-alkyl, R3 is hydrogen, C1-C12-alkyl, C1-C12-alkenyl or C6-C12-aryl and R4 and R5 independently of one another are C1-C12-alkyl, C1-C12-alkenyl, C6-C12-aryl, hydroxyl, C1-C12-alkoxy or hydrogen, dissolved in an inert solvent, to water-absorbing polymers which can be obtained by said process, and to their use in hygiene articles, packaging materials and nonwovens.

    Abstract translation: 本发明涉及一种吸水聚合物的凝胶或表面后交联方法，其中聚合物用表面后交联溶液处理，并且在处理之间或之后，通过温度升高进行后交联和干燥，交联剂为 R 1和R 2彼此独立地是H，羟基，苯基或C 1 -C 6烷基的化合物，R 3是氢，C 1 -C 12 - 烷基，C 1 -C 12 - 烯基或C 6 -C 12 - 芳基，R 4和R 5 彼此独立地是溶解在惰性溶剂中的C 1 -C 12烷基，C 1 -C 12 - 烯基，C 6 -C 12 - 芳基，羟基，C 1 -C 12 - 烷氧基或氢，可以通过所述 过程，以及它们在卫生用品，包装材料和无纺布中的应用。

    Process for producing water-absorbing polymer particles
    98.
    发明授权
    Process for producing water-absorbing polymer particles 有权
    生产吸水性聚合物颗粒的方法

    公开(公告)号：US08420773B2

    公开(公告)日：2013-04-16

    申请号：US13463545

    申请日：2012-05-03

    Applicant: Rüdiger Funk ,  Thomas Pfeiffer

    Inventor： Rüdiger Funk ,  Thomas Pfeiffer

    IPC: C08G64/00 ,  C08G63/02

    CPC classification number: A61L15/24 ,  A61L15/60 ,  C08F6/008 ,  C08F222/1006 ,  C08L33/08

    Abstract: A process for producing water-absorbing polymer particles, comprising polymerization of a monomer solution or suspension, drying the resulting polymer gel, and grinding and classifying the dried polymer gel, wherein the grinding is performed by means of a multistage roll mill, the first milling gap has a width of 500 to 5000 μm, the product mass flow passing through the first milling gap is conducted through a magnetic separator to the second milling gap, and the second milling gap has a smaller gap width than the first milling gap.

    Abstract translation: 一种生产吸水性聚合物颗粒的方法，包括单体溶液或悬浮液的聚合，干燥所得的聚合物凝胶，以及研磨和分级干燥的聚合物凝胶，其中通过多级辊磨机进行研磨，第一次研磨 间隙宽度为500〜5000μm，通过第一铣削间隙的产品质量流通过磁选机进入第二铣削间隙，第二铣削间隙具有比第一铣削间隙小的间隙宽度。

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