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    Hydrogels absorbing aqueous fluids
    9.
    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。

    COLOR STABLE SUPERABSORBENT
    10.
    发明申请
    COLOR STABLE SUPERABSORBENT 审中-公开
    颜色稳定超级

    公开(公告)号：US20110118114A1

    公开(公告)日：2011-05-19

    申请号：US13054287

    申请日：2009-07-29

    申请人： Ulrich Riegel ,  Thomas Daniel ,  Norbert Herfert ,  Mark Elliott

    发明人： Ulrich Riegel ,  Thomas Daniel ,  Norbert Herfert ,  Mark Elliott

    IPC分类号： B01J20/22 ,  C07C313/02

    CPC分类号： A61L15/60 ,  A61L15/42 ,  C08J3/075 ,  C08J2300/14 ,  C08L101/14

    摘要： Superabsorbents comprising a compound of the formula (I) in which M is a hydrogen atom, an ammonium ion, a monovalent metal ion or one equivalent of a divalent metal ion of groups 1, 2, 8, 9, 10, 12 or 14 of the periodic table of the elements; R1 is OH or NR4R5 where R4 and R5 are each independently H or C1-C6-alkyl; R2 is H or an alkyl, alkenyl, cycloalkyl or aryl group, where this group optionally has 1, 2 or 3 substituents which are each independently selected from C1-C6-alkyl, OH, O—C1-C6-alkyl, halogen and CF3; and R3 is COOM, SO3M, COR4, CONR4R5 or COOR4, where M, R4 and R5 are each as defined above or, when R2 is aryl which is optionally substituted as specified above, are also H, salts thereof or mixtures of such compounds and/or salts thereof, exhibit improved stability to discoloration in the course of storage under elevated temperatures and/or elevated air humidity.

    摘要翻译： 超吸收剂，其包含式（I）的化合物，其中M为氢原子，铵离子，一价金属离子或1当量的第1,2,8,9,10,12或14族的二价金属离子 元素周期表; R1是OH或NR4R5，其中R4和R5各自独立地是H或C1-C6-烷基; R2是H或烷基，烯基，环烷基或芳基，其中该基团任选具有1,2或3个各自独立地选自C 1 -C 6烷基，OH，O-C 1 -C 6 - 烷基，卤素和CF 3的取代基 ; 并且R 3是COOM，SO 3 M，COR 4，CONR 4 R 5或COOR 4，其中M，R 4和R 5各自如上所定义，或当R 2是如上所述任选被取代的芳基时，也是H，其盐或这些化合物的混合物和 /或其盐在升高的温度和/或升高的空气湿度下在储存过程中表现出改善的变色稳定性。