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    • 6. 发明授权
    • Process for production of water-absorbing resin particles
    • 吸水树脂颗粒的生产方法
    • US07713623B2
    • 2010-05-11
    • US10548595
    • 2004-03-12
    • Kenya MatsudaYuji KinparaTomoki KawakitaYasuhiro Nawata
    • Kenya MatsudaYuji KinparaTomoki KawakitaYasuhiro Nawata
    • B32B5/66
    • C08J3/24C08F2/14C08F2/32C08J2300/14Y10T428/2982Y10T428/2991Y10T428/2998
    • A process for producing a water-absorbent resin particle comprising subjecting a water-soluble ethylenically unsaturated monomer to a reverse phase suspension polymerization, characterized in that the process for producing a water-absorbent resin particle comprises the steps of (A) subjecting the water-soluble ethylenically unsaturated monomer to a first-step reverse phase suspension polymerization in a hydrocarbon-based solvent using a water-soluble radical polymerization initiator in the presence of a surfactant and/or a polymeric protective colloid, and optionally an internal crosslinking agent; (B) carrying out at least one step of the procedures of adding an aqueous solution of a water-soluble ethylenically unsaturated monomer containing a water-soluble radical polymerization initiator and optionally an internal crosslinking agent to a reaction mixture after the termination of the first-step reverse phase suspension polymerization in a state that the surfactant and/or the polymeric protective colloid is dissolved in the hydrocarbon-based solvent, and subsequently subjecting the mixture to a reverse phase suspension polymerization; and (C) post-crosslinking the resulting water-absorbent resin.
    • 1.一种吸水性树脂粒子的制造方法,其特征在于,使水溶性烯属不饱和单体进行反相悬浮聚合,其特征在于,所述吸水性树脂粒子的制造方法包括以下工序:(A) 在表面活性剂和/或聚合物保护胶体和任选的内部交联剂存在下,使用水溶性自由基聚合引发剂在烃基溶剂中进行第一步反相悬浮聚合; (B)进行至少一个步骤,在第一阶段结束后,向反应混合物中加入含有水溶性自由基聚合引发剂和任选的内部交联剂的水溶性烯属不饱和单体的水溶液, 在表面活性剂和/或聚合物保护胶体溶解在烃系溶剂中,然后使混合物进行反相悬浮聚合的状态下进行步骤反相悬浮聚合; 和(C)使得到的吸水性树脂进行后交联。
    • 7. 发明申请
    • Process for production of water-absorbing resin particles
    • 吸水树脂颗粒的生产方法
    • US20060194055A1
    • 2006-08-31
    • US10548595
    • 2004-03-12
    • Kenya MatsudaYuji KinparaTomoki KawakitaYasuhiro Nawata
    • Kenya MatsudaYuji KinparaTomoki KawakitaYasuhiro Nawata
    • B32B5/16B32B15/02
    • C08J3/24C08F2/14C08F2/32C08J2300/14Y10T428/2982Y10T428/2991Y10T428/2998
    • A process for producing a water-absorbent resin particle comprising subjecting a water-soluble ethylenically unsaturated monomer to a reverse phase suspension polymerization, characterized in that the process for producing a water-absorbent resin particle comprises the steps of (A) subjecting the water-soluble ethylenically unsaturated monomer to a first-step reverse phase suspension polymerization in a hydrocarbon-based solvent using a water-soluble radical polymerization initiator in the presence of a surfactant and/or a polymeric protective colloid, and optionally an internal crosslinking agent; (B) carrying out at least one step of the procedures of adding an aqueous solution of a water-soluble ethylenically unsaturated monomer containing a water-soluble radical polymerization initiator and optionally an internal crosslinking agent to a reaction mixture after the termination of the first-step reverse phase suspension polymerization in a state that the surfactant and/or the polymeric protective colloid is dissolved in the hydrocarbon-based solvent, and subsequently subjecting the mixture to a reverse phase suspension polymerization; and (C) post-crosslinking the resulting water-absorbent resin.
    • 1.一种吸水性树脂粒子的制造方法,其特征在于,使水溶性烯属不饱和单体进行反相悬浮聚合,其特征在于,所述吸水性树脂粒子的制造方法包括以下工序:(A) 在表面活性剂和/或聚合物保护胶体和任选的内部交联剂存在下,使用水溶性自由基聚合引发剂在烃基溶剂中进行第一步反相悬浮聚合; (B)进行至少一个步骤,在第一阶段结束后,向反应混合物中加入含有水溶性自由基聚合引发剂和任选的内部交联剂的水溶性烯属不饱和单体的水溶液, 在表面活性剂和/或聚合物保护胶体溶解在烃系溶剂中,然后使混合物进行反相悬浮聚合的状态下进行步骤反相悬浮聚合; 和(C)使得到的吸水性树脂进行后交联。