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    PRODUCTION OF A WATER-ABSORBING RESIN TO WHICH A PARTICULATE ADDITIVE IS ADMIXED
    33.
    发明申请
    PRODUCTION OF A WATER-ABSORBING RESIN TO WHICH A PARTICULATE ADDITIVE IS ADMIXED 审中-公开
    包含颗粒添加剂的吸水树脂的制备

    公开(公告)号：WO2007074167A2

    公开(公告)日：2007-07-05

    申请号：PCT/EP2006070250

    申请日：2006-12-28

    Applicant: BASF AG ,  STUEVEN UWE ,  DANIEL THOMAS ,  FUNK RUEDIGER ,  WEISMANTEL MATTHIAS ,  VAN ESBROECK DOMINICUS ,  POSSEMIERS KARL ,  HILLEBRECHT ANNEMARIE

    Inventor： STUEVEN UWE ,  DANIEL THOMAS ,  FUNK RUEDIGER ,  WEISMANTEL MATTHIAS ,  VAN ESBROECK DOMINICUS ,  POSSEMIERS KARL ,  HILLEBRECHT ANNEMARIE

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

    Abstract: The invention relates to a method for producing a water-absorbing resin by polymerization of a reaction mixture comprising at least one hydrophilic monomer and optionally at least one cross-linker, in a reactor. According to said method, at least one first fraction of a particulate additive is admixed to the reaction mixture before the reaction mixture reaches a dwell time of 40 % of the total dwell time in the reactor, and at least one second fraction of a particulate additive is admixed when the reaction mixture reaches a dwell time of 45 % or more of the total dwell time in the reactor. The additive is selected from the group of water-adsorbing resin powders, fillers and mixtures thereof, the total solids content of the monomer and the additive being 30 to 60 % by weight, the amount of the additive being 5 to 50 % by weight, based on the monomer, and the weight ratio of the first fraction to the second fraction of the additive being 10:1 to 1:5. The resin powder is constituted of, e.g., recycled fines. Bot the residual monomer content, especially the residual cross-linker content, and the content in extractable substances of the water-absorbing resin are reduced by the described manner of admixture. A high percentage of additives can be incorporated without deteriorating the properties of the water-absorbing resin so obtained. The additives form a sufficiently strong compound with the resin without excessive dust formation when the resin is exposed to mechanical stress.

    Abstract translation: 本发明涉及一种方法，用于通过反应混合物的聚合制造的吸水性树脂，任选地包含在反应器中的至少一种亲水性单体和至少一种交联剂，其中，所述反应混合物中之前至少一个微粒添加剂的第一部分干涉在反应混合物中 的在反应器中，并用颗粒添加剂的至少一个第二部分的总停留时间的40％达到停留时间，当反应混合物已达到的在反应器中的总停留时间为45％以上的停留时间，其中所述添加剂的吸水性树脂粉末，填料和它们的混合物 被选择，单体和添加剂的30至60重量％，添加剂5至50重量％的量存在，基于单体的总固体含量，并且所述第一部分的所述添加剂的所述第二部分的重量比为10：1的 15至 1：5。 树脂粉末是z。 B.回收的罚款。 通过所述的添加方式，残余单体含量，特别是残余交联剂含量和吸水性树脂的可萃取物的含量都降低。 可以掺入高比例的添加剂而不降低所得吸水性树脂的性能。 添加剂与树脂结合得足够牢固，因此在机械应力下不会发生过多的粉尘

    CROSS-LINKED, WATER-SWELLABLE POLYMER AND METHOD FOR PRODUCING THE SAME
    37.
    发明申请
    CROSS-LINKED, WATER-SWELLABLE POLYMER AND METHOD FOR PRODUCING THE SAME 审中-公开
    联网的水源聚合物及其生产方法

    公开(公告)号：WO0232964A3

    公开(公告)日：2002-11-28

    申请号：PCT/EP0112031

    申请日：2001-10-17

    Applicant: BASF AG ,  HEIDE WILFRIED ,  WICKEL STEFAN ,  DANIEL THOMAS ,  STUEVEN UWE

    Inventor： HEIDE WILFRIED ,  WICKEL STEFAN ,  DANIEL THOMAS ,  STUEVEN UWE

    IPC: C08F2/01 ,  C08F2/04 ,  C08F2/10 ,  C08F220/04 ,  C08F220/06 ,  C08F220/56 ,  C08F290/06 ,  B01J19/20 ,  C08F8/00

    CPC classification number: C08F220/56 ,  C08F220/04

    Abstract: The invention relates to a cross-linked, water-swellable polymer that contains polymerized into it moieties of a) water-soluble, monoethylenically unsaturated monomers, and b) 0.001 to 5 mole % based on the monomers a) of a cross-linking combination, b1) a first cross-linking agent with at least two (meth)acrylic ester moieties in the molecule and b2) a second cross-linking agent with at least two (meth)allyloxy moieties in the molecule, the molar ratio of b1) to b2) ranging from 0.7:1 to 10:1. The polymer according to the invention has a balanced property profile as regards absorptivity, gel strength, absorption speed and extractable components and can be advantageously produced by a continuous method.

    Abstract translation: 含有的聚合单元的交联的，水可溶胀的聚合物a）的水溶性，单烯键式不饱和的acrylestereinheiten含有至少两个（甲基第一交联剂的单体和B进行说明）从0.001到基于交联剂组合b1的单体a）为5摩尔％）） 分子和b2）分子中具有至少两个（甲基）烯丙氧基单元的第二交联剂，b1）与b2）的摩尔比在0.7:1至10:1的范围内。 该聚合物在吸收性，凝胶强度，吸收速率和可萃取水平方面具有平衡的性质特征，并且可以有利地以连续方法制备。

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