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    • 2. 发明申请
    • Hydrolytically Stable Postcrosslinked Superabsorbents
    • 水解稳定的后交联超吸收剂
    • US20080214740A1
    • 2008-09-04
    • US11885250
    • 2006-02-24
    • Jorg HarrenJorg IssbernerMirko WaldenRainer TeniFranck FurnoPeter WerleHans-Peter Krimmer
    • Jorg HarrenJorg IssbernerMirko WaldenRainer TeniFranck FurnoPeter WerleHans-Peter Krimmer
    • C08F8/30
    • C08J3/24C08F220/06C08J2333/02
    • The present invention relates to a process for producing postcrosslinked water-absorbing polymeric formations, comprising the steps of contacting water-absorbing polymeric formations P1 obtained by polymerization of ethylenically unsaturated acid-functional monomers or salts thereof in the presence of a crosslinker with a fluid F1 comprising a postcrosslinker, heating the water-absorbing polymeric formations in contact with the fluid F1 to a temperature in a range from 40 to 300° C. to obtain postcrosslinked water-absorbing polymeric formations P2, the water-absorbing polymeric formations P1 having a thermal stability, as determined in accordance with the test method described herein, of less than 3.0%. The invention also relates to water-absorbing polymeric formations, to the water-absorbing polymeric formations obtainable by this process, to water-absorbing polymeric formations based on crosslinked carboxyl-bearing monomers, to a composite comprising water-absorbing polymeric formations and a substrate, to a process for producing a composite, to a composite obtainable by this process, to chemical products comprising water-absorbing polymeric formations or a composite, to the use of water-absorbing polymeric formations or of a composite in chemical products and also to the use of triallyl isocyanurate as an internal crosslinker in the production of water-absorbing polymeric formations based on crosslinked carboxyl-bearing monomers.
    • 本发明涉及一种生产后交联的吸水聚合物地层的方法,包括以下步骤:通过烯键式不饱和酸官能单体或其盐的聚合获得的吸水聚合物地层P 1 存在具有包含后交联剂的流体F 1 N的交联剂,将与流体F 1 1接触的吸水聚合物层加热到40〜 300℃以获得后交联的吸水聚合物组合物P 2,根据测试方法测定的具有热稳定性的吸水性聚合物组合物P 1 <1> 如本文所述,小于3.0%。 本发明还涉及吸水聚合物地层,可通过该方法获得的吸水聚合物地层,基于交联的含羧基单体的吸水聚合物地层,包括吸水聚合物地层和基底的复合材料, 涉及通过该方法可获得的复合材料的方法,涉及包含吸水聚合物结构或复合材料的化学产品,使用吸水聚合物结构或化学产品中的复合材料,以及使用 的三烯丙基异氰脲酸酯作为内部交联剂在基于交联的含羧基单体的吸水性聚合物地层的生产中。
    • 9. 发明授权
    • Process for producing improved absorbent polymers by means of cryogenic grinding
    • 通过低温研磨生产改进的吸收性聚合物的方法
    • US08859701B2
    • 2014-10-14
    • US13876736
    • 2011-10-05
    • Christoph LoickDominik GartzLaurent WattebledJorg Harren
    • Christoph LoickDominik GartzLaurent WattebledJorg Harren
    • C08J9/36C08F20/06C08J3/12A61L15/60A61L15/22C08F6/00C08J3/24B01J20/26
    • B01J20/267A61L15/22A61L15/60C08F6/008C08J3/12C08J3/245C08J2300/14C08J2333/00C08L33/00
    • A process for producing a water-absorbing polymer comprises: (i) mixing (α1) 0.1-99.99% by weight of ethylenically unsaturated monomers containing acid groups or salts thereof, or ethylenically unsaturated monomers including a protonated or quaternized nitrogen, or mixtures thereof, (α2) 0-70% by weight of ethylenically unsaturated monomers copolymerizable with (α1), (α3) 0.001-10% by weight of one or more crosslinkers, (α4) 0-30% by weight of water-soluble polymers, and (α5) 0-20% by weight of one or more assistants, where the sum of the weights (α1) to (α5) is 100%; (ii) free-radical polymerization with crosslinking to form an untreated hydrogel polymer; (iii) coarse comminution of the untreated hydrogel polymer to give pieces having a diameter from 0.1 mm to 5.0 cm; (iv) cooling and grinding the untreated hydrogel polymer; (v) drying the untreated hydrogel polymer after grinding at a temperature from 85° C. to 260° C.; (vi) postcrosslinking the hydrogel polymer and (vii) drying the water-absorbing polymer.
    • 制备吸水性聚合物的方法包括:(i)将(α1)0.1-99.99重量%的含有酸基团的烯属不饱和单体或包含质子化或季铵化的氮的烯属不饱和单体或其混合物, (α2)0-70重量%的可与(α1),(α3)0.001-10重量%的一种或多种交联剂共聚的烯属不饱和单体,(α4)0-30重量%的水溶性聚合物,和 (α5)0-20重量%的一种或多种助剂,其中权重(α1)至(α5)之和为100%; (ii)通过交联进行自由基聚合以形成未处理的水凝胶聚合物; (iii)未经处理的水凝胶聚合物的粗粉碎,得到直径为0.1mm至5.0cm的片; (iv)冷却和研磨未处理的水凝胶聚合物; (v)在85℃至260℃的温度下研磨后将未处理的水凝胶聚合物干燥; (vi)将水凝胶聚合物后交联,和(vii)干燥吸水聚合物。