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31.发明授权Polyacrylic acid (salt) water-absorbent resin, production process thereof, and acrylic acid used in polymerization for production of water-absorbent resin 有权聚丙烯酸（盐）吸水性树脂及其制造方法以及用于生产吸水性树脂的聚合中使用的丙烯酸公开(公告)号：US09062140B2
公开(公告)日：2015-06-23
申请号：US11883929
申请日：2006-04-06
IPC分类号： C08F20/06 , C08F220/06 , A61L15/60 , C08F222/10 , C08K5/01 , C08K5/04
CPC分类号： C08F220/06 , A61L15/60 , C08F20/06 , C08F222/1006 , C08K5/01 , C08K5/04 , C08L33/02
摘要： An embodiment of the present invention allows for the production, with a high productivity, of a water-absorbent resin having an improved relationship between absorption capacity and water-soluble polymer, which are conflicting properties of the water-absorbent resin, being easily controlled for polymerization reaction, being of no odor, being less colored, and being of high absorption properties (high absorption capacity under load and high PPUP). In one embodiment of the present invention, a process for producing a water-absorbent resin by polymerizing an acrylic acid composition including acrylic acid and/or its salt, the process includes: (a) the step of carrying out radical polymerization of the acrylic acid composition to form a hydrogel crosslinked polymer; and (b) the step of drying the hydrogel crosslinked polymer by application of heat, the acrylic acid composition having an unpolymerizable organic compound content of 1 to 1000 ppm by weight, wherein the unpolymerizable organic compound has a solubility parameter of (1.0 to 2.5)×104(Jm−3)1/2.
摘要翻译： 本发明的一个实施方案允许以高生产率生产具有吸收性能与吸水性树脂相互矛盾的吸水性聚合物之间关系改善的吸水性树脂，容易控制 聚合反应，无异味，颜色较少，吸收性高（负载下的高吸收能力和高PPUP）。 在本发明的一个实施方案中，通过使包含丙烯酸和/或其盐的丙烯酸组合物聚合来制备吸水性树脂的方法包括：（a）进行丙烯酸的自由基聚合的步骤 组合物以形成水凝胶交联聚合物; 和（b）通过加热干燥水凝胶交联聚合物的步骤，所述丙烯酸组合物具有1-1000ppm重量的不可聚合有机化合物含量，其中不可聚合的有机化合物的溶解度参数为（1.0-2.5） ×104（Jm-3）1/2。
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公开(公告)号：US08552134B2
公开(公告)日：2013-10-08
申请号：US11693355
申请日：2007-03-29
IPC分类号： C08F220/06 , C08F16/12 , C08F2/00 , C08F2/16
CPC分类号： C08F220/06 , C08F220/26 , C08F222/1006
摘要： A method of producing a water-absorbent resin of the present invention reduces amounts of a residual cross-linking agent and a residual surfactant, achieves high productivity, and improves physical properties of the resultant water-absorbent, such as absorption capacity, extractable polymer content, powder friction, and gel crushability. The method includes the steps of: polymerizing an aqueous monomer solution containing as a major component an acrylic acid monomer in the presence of a cross-linking agent; and drying the resultant polymer by heating, in which the cross-linking agent is a multifunctional (meth)acrylate cross-linking agent having polyethylene glycol structural units including a total of 6 to 200 ethylene oxide repeating units, and the aqueous monomer solution includes a mono(meth)acrylate compound having polyethylene glycol structural units in an amount of 0.1 to 30% by weight relative to an amount of the multifunctional (meth)acrylate cross-linking agent.
摘要翻译： 本发明的吸水性树脂的制造方法可以减少残留交联剂和残留的表面活性剂的量，实现高生产率，提高所得吸水剂的物理性能，如吸收能力，可提取聚合物含量 ，粉末摩擦和凝胶粉碎性。 该方法包括以下步骤：在交联剂存在下聚合含有作为主要组分的丙烯酸单体的单体水溶液; 并通过加热干燥所得聚合物，其中交联剂是具有总共6至200个环氧乙烷重复单元的聚乙二醇结构单元的多官能（甲基）丙烯酸酯交联剂，单体水溶液包括 单（甲基）丙烯酸酯化合物，其相对于多官能（甲基）丙烯酸酯交联剂的量为0.1〜30重量％的聚乙二醇结构单元。
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公开(公告)号：US20070232760A1
公开(公告)日：2007-10-04
申请号：US11693355
申请日：2007-03-29
IPC分类号： C08F120/02
CPC分类号： C08F220/06 , C08F220/26 , C08F222/1006
摘要： A method of producing a water-absorbent resin of the present invention reduces amounts of a residual cross-linking agent and a residual surfactant, achieves high productivity, and improves physical properties of the resultant water-absorbent, such as absorption capacity, extractable polymer content, powder friction, and gel crushability. The method includes the steps of: polymerizing an aqueous monomer solution containing as a major component an acrylic acid monomer in the presence of a cross-linking agent; and drying the resultant polymer by heating, in which the cross-linking agent is a multifunctional (meth)acrylate cross-linking agent having polyethylene glycol structural units including a total of 6 to 200 ethylene oxide repeating units, and the aqueous monomer solution includes a mono(meth)acrylate compound having polyethylene glycol structural units in an amount of 0.1 to 30% by weight relative to an amount of the multifunctional (meth)acrylate cross-linking agent.
摘要翻译： 本发明的吸水性树脂的制造方法可以减少残留交联剂和残留的表面活性剂的量，实现高生产率，提高所得吸水剂的物理性能，如吸收能力，可提取聚合物含量 ，粉末摩擦和凝胶粉碎性。 该方法包括以下步骤：在交联剂存在下聚合含有作为主要组分的丙烯酸单体的单体水溶液; 并通过加热干燥所得聚合物，其中交联剂是具有总共6至200个环氧乙烷重复单元的聚乙二醇结构单元的多官能（甲基）丙烯酸酯交联剂，单体水溶液包括 单（甲基）丙烯酸酯化合物，其相对于多官能（甲基）丙烯酸酯交联剂的量为0.1〜30重量％的聚乙二醇结构单元。
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34.发明授权公开(公告)号：US06444744B1
公开(公告)日：2002-09-03
申请号：US09258503
申请日：1999-02-27
IPC分类号： C08F2006
摘要： The invention provides a hydrophilic resin and an absorbent article, both of which display still less coloring and discoloring when preserved for a long time. The hydrophilic resin is any one of: 1) a hydrophilic resin, obtained by a process including the step of polymerizing a monomer component including a major proportion of either one or both of acrylic acid and its salt which merely have a content of at most 0.20 ppm in total of hydroquinone and benzoquinone; 2) a hydrophilic resin, comprising a major proportion of an acrylic polymer and a minor proportion of either one or both of hydroquinone and benzoquinone, with the hydrophilic resin further comprising a quinhydronation inhibitor of 10˜1,000,000 times the total weight of hydroquinone and benzoquinone; 3) a hydrophilic resin, comprising a major proportion of an acrylic polymer and merely having a coloring degree (YI) of at most 20 after being left under conditions of the open system, 70° C., 65% RH for 1 week; and 4) a hydrophilic resin, which is a water-absorbent resin and is surface-crosslinked or surface-impregnated with a polyhydric alcohol and displays pH of 5.5 or less in a physiological salt solution and has an absorption capacity of 20 g/g or more for a physiological salt solution under a load of 50 g/cm2. In addition, the absorbent article comprises the above hydrophilic resin.
摘要翻译： 本发明提供一种亲水性树脂和吸收性物品，两者在长期保存时都显示出较少的着色和变色。 亲水性树脂是以下中的任何一种：1）亲水性树脂，其通过包括以下步骤的方法获得，所述方法包括使仅含有至多0.20的含量的丙烯酸及其盐中的一种或两种以上的主要部分 对苯二酚和苯醌总共ppm; 2）亲水性树脂，其中主要部分为丙烯酸类聚合物和少量氢醌和苯醌中的一种或两种，亲水性树脂还含有氢醌和苯醌总重量的10〜1,000,000倍的醌氢醌抑制剂; 3）亲水性树脂，其包含主要部分的丙烯酸类聚合物，并且仅在开放系统的条件下，70℃，65％RH下仅具有至多20的着色度（YI）1周; 和4）作为吸水性树脂的表面交联或表面浸渍多元醇的亲水性树脂，在生理盐溶液中显示出pH5.5以下的吸收能力，吸收容量为20g / g， 更多的是在50g / cm 2的负荷下的生理盐溶液。 另外，吸收性物品包含上述亲水性树脂。
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公开(公告)号：US06187872B1
公开(公告)日：2001-02-13
申请号：US09051313
申请日：1998-04-06
申请人： Toru Yanase , Kazuki Kimura , Shin-ichi Fujino , Kinya Nagasuna , Kunihiko Ishizaki , Hirotama Fujimaru , Nobuyuki Harada
发明人： Toru Yanase , Kazuki Kimura , Shin-ichi Fujino , Kinya Nagasuna , Kunihiko Ishizaki , Hirotama Fujimaru , Nobuyuki Harada
IPC分类号： C08F812
CPC分类号： A61L15/60 , B01J20/26 , C08F8/00 , C08F8/44 , C08F2800/20 , C08F2810/20 , C08F220/06
摘要： A hydrogel polymer obtained by polymerizing a monomer component including acrylic acid (salt) is post-neutralized so that each of polymer particles derived from a polymer produced by neutralizing the hydrogel polymer has an allowable neutralization ratio. The polymer as obtained by neutralizing the hydrogel polymer is reacted with a crosslinking agent reactive to a functional group of the polymer. The allowable neutralization ratio, for example, is a neutralization ratio which is not lower, by not less than 20 mole percent, or more than, at least 55 mole percent, than an average neutralization ratio of a mass of the polymer particles, and the post-neutralization is carried out so that a number of polymer particles having a non-allowable neutralization ratio outside the allowable neutralization range is not more than 10 in 200 polymer particles, thus obtaining a water-absorbent agent having high absorbency under no applied pressure and high pressure wherein the amount of water soluble component is lower compared with the conventional water-absorbent agent and a change in pH of a swollen gel is small.
摘要翻译： 通过使包含丙烯酸（盐）的单体组分聚合而获得的水凝胶聚合物被后中和，使得通过中和水凝胶聚合物产生的聚合物衍生的各聚合物颗粒具有允许的中和比。 通过中和水凝胶聚合物获得的聚合物与与聚合物的官能团反应的交联剂反应。 例如，容许的中和比例是中和比，其比不到聚合物颗粒的质量的平均中和比不低于20摩尔％，或至多55摩尔％，而且 进行中和后，使得在200个聚合物粒子中，许多中和比例不超过允许中和比例的聚合物颗粒数不超过10个，从而获得在无施加压力下具有高吸收性的吸水剂， 其中水溶性成分的量与常规吸水剂相比较低，并且溶胀凝胶的pH变化很小。
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36.发明授权Pressure-resistant absorbent resin, disposable diaper using the resin, and absorbent resin, and method for production thereof 失效耐压吸收性树脂，使用树脂的一次性尿布和吸收性树脂，及其制造方法公开(公告)号：US06184433B2
公开(公告)日：2001-02-06
申请号：US09058023
申请日：1998-04-10
IPC分类号： A61F1315
CPC分类号： A61L15/60
摘要： This invention is directed to a disposable diaper using a pressure-resistant absorbent resin manifesting a ratio of water absorption capacity under pressure of 30 g/g or more to artificial urine under a load of 50 g/cm2, and a pressure-resistant absorption ratio of 0.6 or more, wherein the pressure resistant absorption ratio is defined as the ratio of the ratio of water absorption capacity under high pressure to artificial urine under a load of 100 g/cm2 to a ratio of water absorption capacity under pressure to artificial urine under a load of 50 g/cm2.
摘要翻译： 本发明涉及一种使用耐压吸收树脂的一次性尿布，其表现出在50g / cm 2负荷下人造尿液在30g / g以上的压力下的吸水倍率与耐压吸收率 为0.6以上，其中耐压吸收率定义为在负荷为100g / cm 2的情况下，高压下的人造尿与人造尿之间的吸水能力与人造尿下的吸水能力的比例 负荷为50g / cm 2。
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公开(公告)号：US09962680B2
公开(公告)日：2018-05-08
申请号：US13994871
申请日：2011-12-16
IPC分类号： B01J20/26 , B01J20/28 , B01J20/30 , A61L15/60 , C08F220/06 , C08F222/10
CPC分类号： B01J20/261 , A61L15/60 , B01J20/28014 , B01J20/3092 , C08F220/06 , C08F222/1006 , C08L33/02
摘要： Provided is a method for producing a polyacrylic acid (salt)-based water absorbent resin, which is a convenient production method for a water absorbent resin for an absorbent suitable for practical use, the water absorbent resin having a reduced amount of residual monomers. Disclosed is a method for producing a polyacrylic acid (salt)-based water absorbent resin, the method comprising a polymerization step of polymerizing an aqueous monomer solution containing acrylic acid (salt) as a main component; a drying step of drying a water-containing gel-like crosslinked polymer obtained in the polymerization step; a surface crosslinking step of surface crosslinking the water absorbent resin under drying or the water absorbent resin which has been dried; and a packaging step of packaging the surface crosslinked water absorbent resin, wherein an iron content in the aqueous monomer solution in the polymerization step is 2 ppm (relative to the monomer(s)) or less, a moisture content of the water absorbent resin in the packaging step is 1% by weight or more, and the method further comprises, after the packaging step, a storage step of storing the packaged water absorbent resin for 3 days or longer.
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公开(公告)号：US09272068B2
公开(公告)日：2016-03-01
申请号：US13634167
申请日：2011-03-14
CPC分类号： A61L15/56 , A61L15/60 , B01J20/261 , B01J20/267 , B01J2220/68 , C08F6/008 , C08J3/12 , C08J3/122 , C08J3/245 , C08J2300/14 , C08J2333/02
摘要： The disclosed process for producing a water-absorbing resin comprising: a polymerization step of polymerizing an aqueous unsaturated monomer; and a drying step of drying a particulated water-containing gel-liked crosslinked polymer, obtained in a finely crushing step during the polymerization or after the polymerization. In the process, the drying step is interrupted with a dryer kept in a heated state and thereafter the drying step is restarted.
摘要翻译： 所公开的生产吸水性树脂的方法，包括：使含水不饱和单体聚合的聚合步骤; 以及干燥步骤，在聚合过程中或聚合后，在细碎的步骤中得到颗粒状的含水凝胶状交联聚合物。 在该过程中，干燥步骤被保持在加热状态的干燥器中断，然后重新开始干燥步骤。
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39.发明授权Polyacrylic acid (salt)-based water absorbent resin powder and method for producing the same 有权聚丙烯酸（盐）系吸水树脂粉末及其制造方法公开(公告)号：US09044525B2
公开(公告)日：2015-06-02
申请号：US14129792
申请日：2012-06-29
CPC分类号： A61L15/26 , A61L15/60 , C08F20/06 , C08F220/06 , C08J3/245 , C08J2333/02 , C08K5/0091 , C08K5/175 , C08L33/02 , Y10T428/2982 , C08F2222/1013
摘要： Provided is a water absorbent resin having excellent liquid permeability, water absorbent speed, anti-impact stability, and weather resistance. Provided is a polyacrylic acid (salt)-based water absorbent resin powder in which the water absorption capacity without load (CRC) is 30 to 45 [g/g], the water absorption capacity under load (AAP 0.3) is 20 to 35 [g/g], the water absorption capacity under load (AAP 0.7) is 10 to 28 [g/g], and the weight average particle diameter (D50) is 300 to 500 μm, characterized by including p-methoxyphenol; having a degradable soluble component (0.05% L-A (saline) for 2 hours/60° C., one hour extraction rinse/room temperature) of 40% by weight or less; and having a internal gas bubbles ratio of 0.1 to 2.5%, as specified by the following equation. (Internal gas bubbles ratio)[%]={(True density)−(Apparent density)}/(True density)×100
摘要翻译： 提供具有优异的透液性，吸水速度，抗冲击稳定性和耐候性的吸水性树脂。 本发明提供无负载吸水能力（CRC）为30〜45 [g / g]的聚丙烯酸（盐）系吸水性树脂粉末，负荷吸水量（AAP 0.3）为20〜35 [ g / g]，负荷下的吸水量（AAP 0.7）为10〜28 [g / g]，重均粒径（D50）为300〜500μm，其特征在于包括对甲氧基苯酚; 具有40重量％以下的可降解可溶成分（0.05％L-A（盐水）2小时/ 60℃，1小时萃取冲洗/室温） 内部气泡比为0.1〜2.5％，如下式所示。 （内部气泡比）[％] = {（真密度） - （表观密度）} /（真密度）×100
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公开(公告)号：US08802800B2
公开(公告)日：2014-08-12
申请号：US13392698
申请日：2010-08-30
申请人： Shinichi Fujino , Kozo Nogi , Kunihiko Ishizaki
发明人： Shinichi Fujino , Kozo Nogi , Kunihiko Ishizaki
CPC分类号： C08J3/12 , C08J3/245 , C08J2300/14 , C08J2333/02
摘要： A production method for a water-absorbent resin, comprising a polymerization step for obtaining hydrogel by subjecting a monomer aqueous solution to a polymerization reaction, and a drying step for drying the hydrogel, wherein drying in the drying step is performed using a continuous through-flow belt-type drying machine, the pore opening rate of the through-flow belt in the continuous through-flow belt-type drying machine is 20 to 50%, the solid content of the hydrogel supplied to the drying step is 35% by weight or more, and the area occupancy rate of the hydrogel is 85 to 100% relative to the through-flow belt.
摘要翻译： 一种吸水性树脂的制造方法，其特征在于，包括通过使单体水溶液进行聚合反应而得到水凝胶的聚合工序和干燥水凝胶的干燥工序，干燥工序中的干燥是使用连续通孔 流式带式干燥机，连续通流式带式干燥机中通流带的开孔率为20〜50％，供给干燥工序的水凝胶的固体成分为35重量％ 以上，相对于贯流带，水凝胶的面积占有率为85〜100％。
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