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    • 7. 发明申请
    • Method for producing water absorbent resin
    • 吸水树脂的制造方法
    • US20110319518A1
    • 2011-12-29
    • US13254573
    • 2010-03-04
    • Kenji KadonagaKenji TadaMasazumi SasabeSeiji Kato
    • Kenji KadonagaKenji TadaMasazumi SasabeSeiji Kato
    • C08F301/00C08F2/46
    • C08J3/245B01F7/00466B01F7/169C08F20/06C08F220/06C08J2333/02
    • The present invention is a method for producing a water absorbent resin which method is a method for producing surface cross-linked water absorbent resin particles, the method including the successive steps of: (a) adding a surface cross-linking agent and water to a particulate water absorbent resin in a mixer; and (b) reacting the resulting water absorbent resin mixture taken out from the mixer with the surface cross-linking agent in a reactor by heating or active energy ray irradiation, water vapor being used as part or all of the water added in the mixer. This makes it possible to provide a method for producing a water absorbent resin in which method a surface cross-linked water absorbent resin that has excellent properties can be obtained efficiently at low cost with high productivity.
    • 本发明是一种吸水性树脂的制造方法,其为表面交联型吸水性树脂粒子的制造方法,该方法包括以下连续步骤:(a)将表面交联剂和水加入到 混合器中的颗粒状吸水性树脂; 和(b)通过加热或活性能量射线照射将从混合器中取出的所得吸水性树脂混合物与表面交联剂反应在反应器中,使用水蒸气作为混合器中加入的部分或全部水。 这使得可以提供一种制造吸水性树脂的方法,其中可以以低成本有效地以高生产率获得具有优异性能的表面交联吸水性树脂的方法。