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    • 8. 发明授权
    • Process for superabsorbent polymer and crosslinker composition
    • 超吸收聚合物和交联剂组合物的方法
    • US08420567B1
    • 2013-04-16
    • US13341132
    • 2011-12-30
    • Matthias NaumannStanley A. McIntoshFrank SchubertChristoph Loick
    • Matthias NaumannStanley A. McIntoshFrank SchubertChristoph Loick
    • B01J20/26
    • B01J20/261A61L15/60C07D301/00C07D303/36C08F220/06C08F220/32
    • The present invention further relates to a process to make a superabsorbent polymer comprising the steps of a) preparing a neutralized monomer solution comprising a polymerizable monomer selected from unsaturated acid groups-containing monomers, ethylenically unsaturated carboxylic acid anhydride, salts, or derivatives thereof and a caustic agent selection from an alkali agent, wherein the polymerizable monomer is neutralized to from about 50 mol % to about 85 mol %; b) forming a crosslinker monomer mixture by adding an internal crosslinker composition to the neutralized monomer solution wherein the internal crosslinking composition is the reaction product of a stoichiometric excess of amine with a glycidyl compound, wherein the internal crosslinker composition has a residual amount of glycidyl compounds of less than about 500 ppm based on the mass of the internal crosslinker composition; and c) polymerizing the crosslinker monomer mixture to make a superabsorbent polymer.
    • 本发明还涉及一种制备超吸收聚合物的方法,包括以下步骤:a)制备包含选自不饱和酸基团的单体,烯键式不饱和羧酸酐,其盐或衍生物的可聚合单体的中和的单体溶液和 选自碱剂的苛性剂,其中可聚合单体中和至约50mol%至约85mol%; b)通过向中和的单体溶液中加入内部交联剂组合物形成交联剂单体混合物,其中内部交联组合物是化学计量过量的胺与缩水甘油基化合物的反应产物,其中内部交联剂组合物具有残留量的缩水甘油基化合物 基于内部交联剂组合物的质量小于约500ppm; 和c)使交联剂单体混合物聚合以制备超吸收聚合物。