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    Production of a Water-Absorbing Resin to Which a Particulate Additive is Admixed
    52.
    发明申请
    Production of a Water-Absorbing Resin to Which a Particulate Additive is Admixed 失效
    混合颗粒添加剂的吸水树脂的生产

    公开(公告)号：US20100324212A1

    公开(公告)日：2010-12-23

    申请号：US12861338

    申请日：2010-08-23

    Applicant: Uwe Stueven ,  Rüdiger Funk ,  Matthias Weismantel ,  Thomas Daniel ,  Annemarie Hillebrecht ,  Dominicus van Esbroeck ,  Karl J. Possemiers

    Inventor： Uwe Stueven ,  Rüdiger Funk ,  Matthias Weismantel ,  Thomas Daniel ,  Annemarie Hillebrecht ,  Dominicus van Esbroeck ,  Karl J. Possemiers

    IPC: C08K3/34

    CPC classification number: C08F2/44 ,  C08F220/06 ,  C08F222/1006

    Abstract: The invention relates to a process for producing a water-absorbing resin by polymerization of a reaction mixture comprising at least one hydrophilic monomer and, if appropriate, at least one crosslinker in a reactor, which comprises admixing the reaction mixture with at least one first portion of a particulate additive before the reaction mixture has reached a residence time of 40% of the overall residence time in the reactor and with at least one second portion of a particulate additive when the reaction mixture has reached a residence time of 45% or more of the overall residence time in the reactor, the additive being selected from water-absorbing resin powders, fillers and mixtures thereof, the total solids content of monomer and additive being in the range from 30% to 60% by weight, the amount of additive being in the range from 5% to 50% by weight, based on the monomers, and the weight ratio of the first portion to the second portion of the additive being in the range from 10:1 to 1:5. The resin powder is recycled fine-sized material for example. Not only the residual monomer content, specifically the residual crosslinker content, but also the level of extractables in the water-absorbing resin are reduced by the method of addition described. A high fraction of additives can be incorporated without the properties of the water-absorbing resin obtained being adversely affected. The additives enter a sufficiently firm bond with the resin, so that no excessive dusting occurs on exposure to mechanical stress.

    Abstract translation: 本发明涉及通过聚合包含至少一种亲水单体和如果合适的反应器中至少一种交联剂的反应混合物来生产吸水树脂的方法，其包括将反应混合物与至少一个第一部分 的反应混合物在反应混合物的停留时间达到总反应器停留时间的40％的停留时间和至少一个第二部分的颗粒状添加剂之前，当反应混合物达到45％或更多的停留时间时， 在反应器中的总停留时间，添加剂选自吸水树脂粉末，填料及其混合物，单体和添加剂的总固体含量在30重量％至60重量％的范围内，添加剂的量为 基于单体的5重量％至50重量％的范围，并且添加剂的第一部分与第二部分的重量比在10:1至 1：5。 树脂粉末是例如再循环的精细尺寸的材料。 通过所述的添加方法，不仅残留单体含量，特别是残留交联剂含量，而且吸水性树脂中的可萃取物的含量都降低。 可以并入高分数的添加剂，而不会对获得的吸水性树脂的性能产生不良影响。 添加剂与树脂进行足够牢固的粘合，使得在暴露于机械应力时不会发生过度的除尘。

    Method for producing polymers
    57.
    发明授权
    Method for producing polymers 失效
    生产聚合物的方法

    公开(公告)号：US07629428B2

    公开(公告)日：2009-12-08

    申请号：US10586203

    申请日：2005-01-18

    Applicant: Thomas Daniel ,  Ulrich Riegel ,  Mark Elliott

    Inventor： Thomas Daniel ,  Ulrich Riegel ,  Mark Elliott

    IPC: C08F20/06

    CPC classification number: C08F220/06

    Abstract: (Meth)acrylate salt polymers are prepared by free-radical polymerization of (meth)acrylate salt with or without other monomers in an aqueous medium by using a supersaturated aqueous solution of (meth)acrylate salt. The resulting highly concentrated reaction mixtures are notable for their high solids content and increased space-time yield.

    Abstract translation: （甲基）丙烯酸盐盐聚合物通过使用（甲基）丙烯酸盐的过饱和水溶液在含水介质中与（或）其它单体或不与其它单体进行自由基聚合来制备。 所得到的高度浓缩的反应混合物由于其高固体含量和增加的时空产率而显着。

    Fine-Grained Water-Absorbent Particles With a High Fluid Transport and Absorption Capacity
    59.
    发明申请
    Fine-Grained Water-Absorbent Particles With a High Fluid Transport and Absorption Capacity 有权
    具有高流体输送和吸收能力的细颗粒吸水剂颗粒

    公开(公告)号：US20080125533A1

    公开(公告)日：2008-05-29

    申请号：US11665883

    申请日：2005-10-14

    Applicant: Ulrich Riegel ,  Thomas Daniel ,  Dieter Hermeling ,  Mark Elliott

    Inventor： Ulrich Riegel ,  Thomas Daniel ,  Dieter Hermeling ,  Mark Elliott

    IPC: C08K3/32 ,  C08L35/02 ,  C08L35/00

    CPC classification number: A61L15/60 ,  C08L33/02

    Abstract: The invention relates to finely divided water-absorbing polymeric particles having high fluid transportation and absorption performance, the Centrifuge Retention Capacity (CRC) being not less than 26 g/g, the absorbency under a load of 4.83 kPa (AUL 1.7 psi) not less than 23 g/g and the Transportation Value (TV) not less than 15,000 cm3s, the Transportation Value (TV) being the product of Saline Flow Conductivity (SFC) and wicking absorption after 60 minutes (DA60) multiplied by 107, and wherein the wicking absorption after 60 minutes (DA60) is the weight of 0.9% by weight sodium chloride solution absorbed by 70 g of the water-absorbing polymeric particles in 60 minutes, wherein the water-absorbing polymeric particles are situated, during measurement, in a circularly round vessel which has an internal diameter of 6 cm and is sealed at its lower end by a sieve base of 36 μm mesh size, and the sieve base is in atmospheric contact with 0.9% by weight sodium chloride solution, processes for their preparation and also their use in hygiene articles and packaging materials.

    Abstract translation: 本发明涉及具有高流体输送和吸收性能的细分散的吸水聚合物颗粒，离心保留容量（CRC）不小于26g / g，负荷4.83kPa（AUL 1.7psi）下的吸光度不低于 运输价值（TV）不小于15,000厘米3，交通运输价值（TV）是盐水流动电导率（SFC）和60分钟后芯吸吸收率 DA 60）乘以10 7，其中60分钟后的芯吸吸收（DA <60>）为重量的0.9％（重量）的钠 60分钟内由70g吸水性聚合物颗粒吸收的氯化物溶液，其中吸水性聚合物颗粒在测量期间位于具有6cm内径并在其下端密封的圆形圆形容器中 通过筛孔尺寸为36μm的筛网，筛基与大气接触为0.9％ 重量的氯化钠溶液，其制备方法以及它们在卫生制品和包装材料中的使用。

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