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    Production of a Water-Absorbing Resin to Which a Particulate Additive is Admixed
    34.
    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 binding particulate, water-absorbing, acid group-containing polymers to a base material
    40.
    发明授权
    Method for binding particulate, water-absorbing, acid group-containing polymers to a base material 失效
    将颗粒状，吸水性含酸基聚​​合物与基材结合的方法

    公开(公告)号：US07351302B2

    公开(公告)日：2008-04-01

    申请号：US10514934

    申请日：2003-06-06

    Applicant: Rüdiger Funk ,  Ulrike Hoss

    Inventor： Rüdiger Funk ,  Ulrike Hoss

    IPC: B32B37/24 ,  B05D7/24

    CPC classification number: D06M15/263 ,  A61L15/60 ,  C08F8/44 ,  D06M2200/00 ,  Y10T442/2484 ,  Y10T442/277 ,  Y10T442/2861

    Abstract: A process for binding particulate water-absorbing acid-functional polymers to a carrier material by means of compounds comprising amino groups, which comprises contacting the carrier material with particulate water-absorbing acid-functional polymers whose acid groups have been 0 to not more than 55 mol % neutralized with alkali metal and/or ammonium bases and then raising the degree of neutralization of these polymers to not less than 60 mol % by treatment with amino-containing compounds. The use of compounds comprising amino groups and selected from the group of the compounds consisting of the alkanolamines and compounds which contain ethyleneimine and/or vinylamine units to neutralize and bind particulate water-absorbing acid-functional polymers neutralized 0 to not more than 55 mol % with alkali metal and/or ammonium bases to a carrier material.

    Abstract translation: 一种通过包含氨基的化合物将颗粒状吸水酸官能聚合物与载体材料结合的方法，该方法包括使载体材料与酸性基团为0至不超过55的颗粒状吸水酸官能聚合物 mol％用碱金属和/或铵碱中和，然后通过用含氨基化合物处理将这些聚合物的中和度提高到不小于60mol％。 使用包含氨基并且选自由链烷醇胺组成的化合物和含有乙烯亚胺和/或乙烯胺单元的化合物中和并结合颗粒状吸水酸官能聚合物的化合物组合的化合物中和至不大于55mol％ 与载体材料的碱金属和/或铵碱。

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