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    • 5. 发明授权
    • Continuous process for the production of a superabsorbent polymer
    • 用于生产超吸收性聚合物的连续方法
    • US08357766B2
    • 2013-01-22
    • US12575071
    • 2009-10-07
    • Daniel FrickerHerbert GartnerMarc HagerJörg HarrenHans-Peter KohlerHarald Plöchinger
    • Daniel FrickerHerbert GartnerMarc HagerJörg HarrenHans-Peter KohlerHarald Plöchinger
    • C08F222/02
    • C08F2/14C08F2/16
    • The present invention relates to a continuous process for the production of a superabsorbent polymer comprising providing an acidic liquid aqueous monomer mixture containing dissolved oxygen; continuously feeding the aqueous monomer mixture to a reactor; introducing a source of carbonate or hydrogen carbonate into the aqueous monomer mixture prior to entry into the reactor thereby forming a gas phase comprising carbon dioxide and at least a part of the dissolved oxygen, the gas phase being dispersed in the liquid phase; subjecting the gas/liquid mixture to at least partial phase separation immediately prior to or after entry into the reactor and at least partially removing the separated gaseous phase; subjecting the liquid phase in the reactor to free-radical polymerization to obtain the superabsorbent polymer, and continuously removing the superabsorbent polymer from the reactor.
    • 本发明涉及制备超吸收性聚合物的连续方法,其包括提供含有溶解氧的酸性液体含水单体混合物; 连续地将含水单体混合物进料到反应器中; 在进入反应器之前将碳酸盐或碳酸氢盐引入含水单体混合物中,从而形成包含二氧化碳和至少一部分溶解氧的气相,气相分散在液相中; 在气体/液体混合物进入反应器之前或之后立即进行至少部分相分离,并至少部分除去分离的气相; 将反应器中的液相进行自由基聚合以获得超吸收性聚合物,并从反应器中连续除去超吸收性聚合物。
    • 10. 发明授权
    • Water-absorbing polymer particles delaying the decomposition of body fluids, composites comprising these and use thereof
    • 吸水聚合物颗粒延缓体液分解,包含这些的复合材料和其用途
    • US07625957B2
    • 2009-12-01
    • US10512351
    • 2003-04-23
    • Jörg HarrenJörg IssbernerHarald Schmidt
    • Jörg HarrenJörg IssbernerHarald Schmidt
    • C08K3/10
    • A61L15/46A61L15/24A61L2300/104A61L2300/404C08K3/28C08L33/06
    • Water-absorbing, antimicrobial polymer particles comprising from about 1 to about 500 ppm, based on the particles, of a silver ion based on a silver salt, wherein the silver salt has a solubility product of at least about 1×10−8 (mol/l)m+n; at least about 10 wt. %, based on the polymer particle, of a water-absorbing polymer based on: (α1) from about 50 to about 99.99 wt. % polymerized, ethylenically unsaturated, acid groups-containing monomers or salts thereof, (α2) 0 to about 40 wt. % polymerized, mono-ethylenically unsaturated monomers polymerizable with α1, (α3) from about 0.01 to about 5 wt. %, preferably from about 0.1 to about 3 wt. % of one or more crosslinkers, (α4) 0 to about 30 wt. % of a water soluble polymer and (α5) 0 to about 20 wt. % of auxiliaries, the concentration of the silver ion based on a silver salt in at most about 90 vol. % of the particles is less than about 0.01 ppm.
    • 包含基于颗粒的约1至约500ppm的基于银盐的银离子的吸水性抗微生物聚合物颗粒,其中银盐的溶解度积至少约为1×10 -8(mol / l )m + n; 至少约10重量% 基于聚合物颗粒的基于:(α1)为约50至约99.99重量%的吸水聚合物。 %聚合的烯键式不饱和的含酸基团的单体或其盐,(α2)0至约40wt。 可聚合α1的(%)聚合的单烯属不饱和单体,(α3)约0.01至约5wt。 %,优选约0.1至约3wt。 %的一种或多种交联剂,(α4)0至约30wt。 %的水溶性聚合物和(α5)0至约20wt。 %的助剂,基于银盐的银离子浓度至多约为90体积%。 %的颗粒小于约0.01ppm。