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    Hydrophilic hydrogels with a high swelling capacity and method for producing and using them
    2.
    发明授权
    Hydrophilic hydrogels with a high swelling capacity and method for producing and using them 失效
    具有高溶胀能力的亲水性水凝胶及其制造和使用方法

    公开(公告)号：US06602950B1

    公开(公告)日：2003-08-05

    申请号：US09806944

    申请日：2001-04-06

    申请人： Joachim Dentler ,  Rüdiger Funk ,  Norbert Herfert ,  Mariola Wanior ,  Friedrich Engelhardt

    发明人： Joachim Dentler ,  Rüdiger Funk ,  Norbert Herfert ,  Mariola Wanior ,  Friedrich Engelhardt

    IPC分类号： A61L1524

    CPC分类号： C08F283/06 ,  A61L15/60 ,  C08F8/00 ,  C08F251/00 ,  C08F283/02 ,  Y10S524/916 ,  Y10S526/932 ,  Y10S604/904 ,  C08F283/00

    摘要： A hydrophilic, highly swellable hydrogel based on (co)polymerized monomers or based on graft (co)polymers and prepared by a) free-radically (co)polymerizing one-or more hydrophilic monomers or graft (co)polymerizing one or more hydrophilic monomers onto a grafting base, the average degree of neutralization of the acid-functional monomers being from 0 to 40 mol %, b) comminuting the acidic hydrogel, c) neutralizing the acidic hydrogel to an ultimate degree of neutralization of 50-85 mol % by adding a neutralizing agent, d) drying, grinding and sieving the hydrogel particles characterized by a centrifuge retention and a vertical absorption swell height, each having a specified minimum.value, coupled with an extractables content having a specified maximum value or a centrifuge retention and a vertical absorption swell height, each having a specified minimum value and an extractables content having a specified maximum value.

    摘要翻译： 基于（共）聚合单体或基于接枝（共）聚合物的亲水性，高度可溶胀的水凝胶，并通过自由基（共）聚合一种或多种亲水单体或将一种或多种亲水性单体接枝（共）聚合到 接枝碱，酸官能单体的平均中和度为0〜40摩尔％，b）粉碎酸性水凝胶，c）通过加入酸性水凝胶中和酸性水凝胶至50-85摩尔％的最终中和度 中和剂，d）干燥，研磨和筛分水凝胶颗粒，其特征在于离心机保留和垂直吸收膨胀高度，每个具有特定的最小值，加上具有特定最大值的可提取物含量或离心机保留和垂直吸收 每个具有指定的最小值的膨胀高度，以及具有指定的最大值的可提取物内容。

    Hydrogels absorbing aqueous fluids
    4.
    发明授权
    Hydrogels absorbing aqueous fluids 有权
    吸水剂的水凝胶

    公开(公告)号：US08552071B1

    公开(公告)日：2013-10-08

    申请号：US09831915

    申请日：1999-11-18

    申请人： Thomas Daniel ,  Ulrich Riegel ,  Matthias Weismantel ,  Norbert Herfert ,  Friedrich Engelhardt

    发明人： Thomas Daniel ,  Ulrich Riegel ,  Matthias Weismantel ,  Norbert Herfert ,  Friedrich Engelhardt

    IPC分类号： A61L15/60 ,  C08L33/02 ,  C08F20/04 ,  C08F2/44 ,  C08K3/34 ,  C08K3/36 ,  A61F13/53 ,  A61F13/15 ,  A61F13/49 ,  A61F5/44

    CPC分类号： C08F20/04 ,  A61L15/18 ,  A61L15/60 ,  C08K3/34

    摘要： The invention relates to hydrogels capable of absorbing aqueous fluids, which hydrogels are produced by polymerization of olefinically unsaturated carboxylic acids or their derivatives. The hydrogels are characterized in that before, during or after the polymerization reaction and before drying a silicic acid alkali salt of the general formula (I) M2O×nSiO2 is added to the polymerization reaction mixture. In said formula M is an alkali metal and n is a number between 0.5 and 4. The hydrogel obtained in this way is then dried at an elevated temperature. The invention also relates to a method for producing said hydrogels and to their use for absorbing aqueous fluids.

    摘要翻译： 本发明涉及能够吸收含水流体的水凝胶，该水凝胶是通过烯属不饱和羧酸或其衍生物的聚合制备的。 水凝胶的特征在于，在聚合反应之前，之中或之后，在干燥之前，将通式（I）的M 2 O x nSiO 2的硅酸碱金属盐加入到聚合反应混合物中。 在所述式中，M是碱金属，n是0.5-4之间的数。然后在升高的温度下将这样得到的水凝胶干燥。 本发明还涉及一种生产所述水凝胶的方法及其用于吸收含水流体的用途。

    Hydrophilic swellable graft copolymers, their preparation and use
    9.
    发明授权
    Hydrophilic swellable graft copolymers, their preparation and use 失效
    亲水性可溶胀接枝共聚物，其制备和用途

    公开(公告)号：US5011892A

    公开(公告)日：1991-04-30

    申请号：US498722

    申请日：1990-03-26

    申请人： Friedrich Engelhardt ,  Ulrich Riegel

    发明人： Friedrich Engelhardt ,  Ulrich Riegel

    IPC分类号： A61F13/53 ,  A61F13/49 ,  A61L15/60 ,  C08F283/06 ,  C08F290/06

    CPC分类号： C08F283/06 ,  A61L15/60

    摘要： The present invention relates to hydrophilic, swellable graft copolymers composed, in random distribution, of 0.5 to 20% by weight of radicals of the general formula I ##STR1## 79 to 99% by weight of radicals containing an acidic group, of the general formula II ##STR2## and 0.1 to 2% by weight of crosslinking structures which are derived from monomers having at least two olefinically unsaturated double bonds, where the radicals X, Y, R.sup.1 to R.sup.4 and n have the meanings given in claim 1, and which are used as absorbents for water and aqueous solutions.

    摘要翻译： 本发明涉及亲水性，可溶胀的接枝共聚物，其以随机分布的形式含有0.5-20％（重量）的通式Ⅰ（I）的基团为79-99％（重量）含酸性基团的基团， 衍生自具有至少两个烯属不饱和双键的单体的交联结构的通式II（II）和0.1至2重量％的交联结构，其中基团X，Y，R 1至R 4和n具有给定的含义 在权利要求1中，其用作水和水溶液的吸收剂。