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公开(公告)号：US08084544B2
公开(公告)日：2011-12-27
申请号：US11922850
申请日：2006-06-30
CPC分类号： C08F2/18 , B01J4/002 , B01J19/2415 , B01J19/26 , B01J20/26 , B01J31/0235 , B01J31/04 , B01J2220/68 , B01J2231/125 , C08F2/001 , C08F2/14 , C08F220/06 , C08F222/385 , C08K5/175
摘要： Process for preparing a water-absorbent resin comprising carrying out a reversed-phase suspension polymerization in multi-steps of two or more steps. The water-absorbent resin is prepared by subjecting a water-soluble ethylenically unsaturated monomer to the reversed phase suspension polymerization. This process for preparing a water-absorbent resin involves adding an aminocarboxylic acid compound to at least one step in the second and subsequent steps to carry out the polymerization reaction. The resulting water-absorbent resin can be suitably used in a hygienic material. The water-absorbent resin has a high degree of water-retention, including a high degree of water absorption under pressure. It also has a high water absorption rate, and contains only a small amount of water-soluble substances.
摘要翻译： 制备吸水性树脂的方法包括以两步或多步的多步骤进行反相悬浮聚合。 吸水性树脂通过使水溶性烯属不饱和单体进行反相悬浮聚合来制备。 制备吸水性树脂的方法包括在第二和随后的步骤中将氨基羧酸化合物加入到至少一个步骤中以进行聚合反应。 得到的吸水性树脂可以适用于卫生材料。 吸水性树脂具有高的保水性，包括在压力下的高吸水率。 它也具有很高的吸水率，只含有少量的水溶性物质。
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公开(公告)号：US20090118432A1
公开(公告)日：2009-05-07
申请号：US11922850
申请日：2006-06-30
CPC分类号： C08F2/18 , B01J4/002 , B01J19/2415 , B01J19/26 , B01J20/26 , B01J31/0235 , B01J31/04 , B01J2220/68 , B01J2231/125 , C08F2/001 , C08F2/14 , C08F220/06 , C08F222/385 , C08K5/175
摘要： [Problems] To provide a process for preparing a water-absorbent resin which can be suitably used in a hygienic material, the water-absorbent resin having a large amount of water-retention, a large amount of water absorption under pressure, a high water absorption rate, and a small amount of water-soluble substance.[Solving Means] A process for preparing a water-absorbent resin comprising carrying out a reversed phase suspension polymerization in multi-steps of two or more steps when the water-absorbent resin is prepared by subjecting a water-soluble ethylenically unsaturated monomer to the reversed phase suspension polymerization, said process for preparing a water-absorbent resin being characterized by adding an aminocarboxylic acid compound to at least one step in the second and subsequent steps, to carry out the polymerization reaction.
摘要翻译： [问题]为了提供一种适合用于卫生材料的吸水性树脂的制备方法，具有大量保水性，在压力下的大量吸水量，高水分的吸水性树脂 吸收率和少量的水溶性物质。 [解决方案]一种吸水性树脂的制备方法，其包括当通过使水溶性烯键式不饱和单体经过相反的反应制备吸水性树脂时，以两步或多步的多步骤进行反相悬浮聚合 所述制备吸水性树脂的方法的特征在于在第二和随后的步骤中将至少一个步骤中加入氨基羧酸化合物进行聚合反应。
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公开(公告)号：US20070197749A1
公开(公告)日：2007-08-23
申请号：US11572038
申请日：2005-06-22
IPC分类号： C08F4/32
摘要： The present invention provides a process for producing a water-absorbing resin with less coloring wherein only a small amount of a polymerization inhibitor remains, and the water-absorbing resin. More particularly, the present invention provides a process for producing a water-absorbing resin, comprising polymerizing a water-soluble ethylenic unsaturated monomer and, then, drying a hydrous gel of the resulting polymer at a pressure of 5 to 90 kPa under the atmosphere having no oxygen, or having an oxygen concentration of not higher than 5% by volume. In addition, by such the process, a water-absorbing resin having Yellow Index of not more than 20 is obtained, wherein an amount of a remaining polymerization inhibitor is not more than 30 ppm.
摘要翻译： 本发明提供了一种生产吸水性树脂的方法，该吸水树脂具有较少的着色，其中仅留下少量的聚合抑制剂和吸水树脂。 更具体地说，本发明提供一种吸水性树脂的制造方法，其特征在于，使水溶性烯属不饱和单体聚合，然后在5〜90kPa的压力下，在得到的聚合物的水凝胶的干燥下， 无氧，或氧浓度不高于5体积％。 此外，通过该方法，得到黄色指数为20以下的吸水性树脂，其中残留聚合抑制剂的量不超过30ppm。
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公开(公告)号：US07713623B2
公开(公告)日：2010-05-11
申请号：US10548595
申请日：2004-03-12
申请人： Kenya Matsuda , Yuji Kinpara , Tomoki Kawakita , Yasuhiro Nawata
发明人： Kenya Matsuda , Yuji Kinpara , Tomoki Kawakita , Yasuhiro Nawata
IPC分类号： B32B5/66
CPC分类号： C08J3/24 , C08F2/14 , C08F2/32 , C08J2300/14 , Y10T428/2982 , Y10T428/2991 , Y10T428/2998
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20060194055A1
公开(公告)日：2006-08-31
申请号：US10548595
申请日：2004-03-12
申请人： Kenya Matsuda , Yuji Kinpara , Tomoki Kawakita , Yasuhiro Nawata
发明人： Kenya Matsuda , Yuji Kinpara , Tomoki Kawakita , Yasuhiro Nawata
CPC分类号： C08J3/24 , C08F2/14 , C08F2/32 , C08J2300/14 , Y10T428/2982 , Y10T428/2991 , Y10T428/2998
摘要： 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.
摘要翻译： 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。
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