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公开(公告)号：US20090305884A1
公开(公告)日：2009-12-10
申请号：US12296808
申请日：2007-09-28
申请人： Shigeru Sakamoto , Yoshio Irie , Hiroyuki Ikeuchi , Makoto Nagasawa , Kunihiko Ishizaki , Sayaka Machida
发明人： Shigeru Sakamoto , Yoshio Irie , Hiroyuki Ikeuchi , Makoto Nagasawa , Kunihiko Ishizaki , Sayaka Machida
IPC分类号： B01J20/26
CPC分类号： C08J3/12 , B29B9/06 , B29B17/00 , C08J2300/14 , Y02W30/62
摘要： The present invention provides a method for producing a water absorbent resin particle, in high productivity, not only in a controlled manner of particle size but also enhancing fundamental property (absorption capacity or absorption capacity against pressure) of a water absorbent resin. A method for producing a water absorbent resin particle having the cross-linking polymerization step for an aqueous solution of an unsaturated monomer; the grain refining step for water-swellable, water-containing gel-like cross-linked polymer (a) obtained in the cross-linking polymerization step; the drying step for grain refined gel; and the crushing step for a dried substance, wherein, in the grain refining step for the water-swellable, water-containing gel-like cross-linked polymer (a), water-swellable, water-containing gel-like cross-linked polymer (b), having solid content or centrifuge retention capacity different from solid content or centrifuge retention capacity of the cross-linked polymer (a) by equal to or larger than 1%, is subjected to coexistence.
摘要翻译： 本发明提供了一种生产吸水性树脂颗粒的方法，不仅以受控的粒度控制，而且提高了吸水性树脂的基本性能（吸收能力或抗吸收能力）。 一种制备具有用于不饱和单体的水溶液的交联聚合步骤的吸水性树脂颗粒的方法; 在交联聚合步骤中获得的水溶胀性含水凝胶状交联聚合物（a）的晶粒细化步骤; 颗粒精制凝胶的干燥步骤; 和干物质的破碎步骤，其中在水溶胀性含水凝胶状交联聚合物（a）的晶粒细化工序中，水溶胀性含水凝胶状交联聚合物 （b）具有不同于交联聚合物（a）的固体含量或离心保留能力等于或大于1％的固体含量或离心保留能力共存。
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公开(公告)号：US09593212B2
公开(公告)日：2017-03-14
申请号：US12296808
申请日：2007-09-28
申请人： Shigeru Sakamoto , Yoshio Irie , Hiroyuki Ikeuchi , Makoto Nagasawa , Kunihiko Ishizaki , Sayaka Machida
发明人： Shigeru Sakamoto , Yoshio Irie , Hiroyuki Ikeuchi , Makoto Nagasawa , Kunihiko Ishizaki , Sayaka Machida
CPC分类号： C08J3/12 , B29B9/06 , B29B17/00 , C08J2300/14 , Y02W30/62
摘要： The present invention provides a method for producing a water absorbent resin particle, in high productivity, not only in a controlled manner of particle size but also enhancing fundamental property (absorption capacity or absorption capacity against pressure) of a water absorbent resin. A method for producing a water absorbent resin particle having the cross-linking polymerization step for an aqueous solution of an unsaturated monomer; the grain refining step for water-swellable, water-containing gel-like cross-linked polymer (a) obtained in the cross-linking polymerization step; the drying step for grain refined gel; and the crushing step for a dried substance, wherein, in the grain refining step for the water-swellable, water-containing gel-like cross-linked polymer (a), water-swellable, water-containing gel-like cross-linked polymer (b), having solid content or centrifuge retention capacity different from solid content or centrifuge retention capacity of the cross-linked polymer (a) by equal to or larger than 1%, is subjected to coexistence.
摘要翻译： 本发明提供了一种生产吸水性树脂颗粒的方法，不仅以受控的粒度控制，而且提高了吸水性树脂的基本性能（吸收能力或抗吸收能力）。 一种制备具有用于不饱和单体的水溶液的交联聚合步骤的吸水性树脂颗粒的方法; 在交联聚合步骤中获得的水溶胀性含水凝胶状交联聚合物（a）的晶粒细化步骤; 颗粒精制凝胶的干燥步骤; 和干物质的破碎步骤，其中在水溶胀性含水凝胶状交联聚合物（a）的晶粒细化工序中，水溶胀性含水凝胶状交联聚合物 （b）具有不同于交联聚合物（a）的固体含量或离心保留能力等于或大于1％的固体含量或离心保留能力共存。
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公开(公告)号：US08513378B2
公开(公告)日：2013-08-20
申请号：US13496440
申请日：2010-09-16
CPC分类号： C08J3/28 , C08F220/06 , C08F222/1006 , C08J3/122 , C08J3/245 , C08J2300/00
摘要： The present invention provides a method for producing a water-absorbing resin powder. The method includes a polymerization step, a drying step, a pulverization step, a classification step, and a surface cross-linking step. It further includes an additional step, performed before the surface cross-linking step, in which at least part of the classified polymer is supplied again to the same or a different pulverization step. The circulation pulverization ratio in the pulverization step is higher than 1.50.
摘要翻译： 本发明提供一种吸水性树脂粉末的制造方法。 该方法包括聚合步骤，干燥步骤，粉碎步骤，分级步骤和表面交联步骤。 其还包括在表面交联步骤之前进行的另外的步骤，其中将至少部分分类的聚合物再次供应到相同或不同的粉碎步骤。 粉碎步骤中的循环粉碎比高于1.50。
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公开(公告)号：US20120220745A1
公开(公告)日：2012-08-30
申请号：US13496440
申请日：2010-09-16
IPC分类号： C08F20/06
CPC分类号： C08J3/28 , C08F220/06 , C08F222/1006 , C08J3/122 , C08J3/245 , C08J2300/00
摘要： [PROBLEM]It is an object of the present invention to enhance and stabilize properties of a water-absorbing resin, for example, damage resistance or water-absorbing speed, by a simple and convenient method without requiring change of raw materials or expensive facility investment, in a large scale production method for the water-absorbing resin.[MEANS FOR SOLVING THE PROBLEM]It is solved by circulation of the water-absorbing resin in a predetermined amount or more in the pulverization step before the surface cross-linking step. That is, at least a part of the classified polymer is supplied again to the same or different pulverization step, before the surface cross-linking step, wherein circulation pulverization ratio in the pulverization step, represented by the following equation is larger than 1.50: (Circulation pulverization ratio)=(total supply amount of the water-absorbing resin to the pulverization step)/(total discharge amount of the water-absorbing resin at the drying step) (wherein total supply amount of the water-absorbing resin to the pulverization step)=(total discharge amount of the water-absorbing resin at the drying step)+(amount of the classified polymer supplied again to the same or different pulverization step)).
摘要翻译： 本发明的目的是通过简单方便的方法来增强和稳定吸水树脂的性能，例如耐损伤性或吸水速度，而不需要改变原料或昂贵的设备投资 在大量的吸水树脂的制造方法中。 解决问题的手段通过在表面交联工序之前的粉碎工序中使吸水性树脂循环一定量以上来解决。 也就是说，在表面交联步骤之前，将分类的聚合物的至少一部分再次供给到相同或不同的粉碎步骤，其中由下式表示的粉碎步骤中的循环粉碎比大于1.50：（ 循环粉碎比）=（粉碎步骤中的吸水性树脂的总供给量）/（干燥工序中的吸水性树脂的总排出量）（其中，吸水性树脂与粉碎的总供给量 步骤）=（干燥步骤中的吸水性树脂的总排出量）+（再次供给相同或不同的粉碎步骤的分类聚合物的量））。
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公开(公告)号：US20120220733A1
公开(公告)日：2012-08-30
申请号：US13395912
申请日：2010-09-16
IPC分类号： C08F120/06 , C08F2/10 , C08F6/12
CPC分类号： C08J3/28 , C08F220/06 , C08F222/1006 , C08J3/122 , C08J3/245 , C08J2300/00
摘要： [PROBLEM]It is an object of the present invention to enhance and stabilize properties of a water-absorbing resin, for example, damage resistance or water-absorbing speed, by a simple and convenient method without requiring change of raw materials or expensive facility investment, in a large scale production method for the water-absorbing resin.[MEANS FOR SOLVING THE PROBLEM]It is solved by circulation of the water-absorbing resin in a predetermined amount or more in the pulverization step before the surface cross-linking step. That is, at least a part of the classified polymer is supplied again to the same or different pulverization step, before the surface cross-linking step, wherein circulation pulverization ratio in the pulverization step, represented by the following equation is 1.10 to 1.50: (Circulation pulverization ratio)=(total supply amount of the water-absorbing resin to the pulverization step)/(total discharge amount of the water-absorbing resin at the drying step) (wherein total supply amount of the water-absorbing resin to the pulverization step)=(total discharge amount of the water-absorbing resin at the drying step)+(amount of the classified polymer supplied again to the same or different pulverization step)).
摘要翻译： 本发明的目的是通过简单方便的方法来增强和稳定吸水树脂的性能，例如耐损伤性或吸水速度，而不需要改变原料或昂贵的设备投资 在大量的吸水树脂的制造方法中。 解决问题的手段通过在表面交联工序之前的粉碎工序中使吸水性树脂循环一定量以上来解决。 也就是说，在表面交联步骤之前，将分类的聚合物的至少一部分再次供给到相同或不同的粉碎步骤，其中由下式表示的粉碎步骤中的循环粉碎比为1.10至1.50：（ 循环粉碎比）=（粉碎步骤中的吸水性树脂的总供给量）/（干燥工序中的吸水性树脂的总排出量）（其中，吸水性树脂与粉碎的总供给量 步骤）=（干燥步骤中的吸水性树脂的总排出量）+（再次供给相同或不同的粉碎步骤的分类聚合物的量））。
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公开(公告)号：US06562879B1
公开(公告)日：2003-05-13
申请号：US09502823
申请日：2000-02-11
IPC分类号： C08J916
CPC分类号： C08J3/12 , C08J3/122 , C08J2300/14
摘要： The present invention provides a water-absorbent resin powder and its production process and use, wherein the water-absorbent resin powder has high liquid permeability and high water absorbency. The production process for a water-absorbent resin powder, according to the present invention, comprises the step of obtaining water-absorbent crosslinked polymer particles by an aqueous solution polymerization step, and grinding the resultant crosslinked polymer particles until the bulk density thereof increases to not lower than 0.72 (g/ml). The water-absorbent resin powder is characterized by being arbitrarily pulverized and having a bulk density of not lower than 0.74 (g/ml) and a water absorption capacity of not lower than 20 (g/g) for 0.9 weight % physiological saline under a load of 0.7 psi (4.83 kPa). In addition, the absorbent structure comprises the above water-absorbent resin powder and a fibrous material. The absorbent article comprises an absorbent layer including the above absorbent structure.
摘要翻译： 本发明提供吸水性树脂粉末及其制造方法和用途，其中吸水性树脂粉末具有高透液性和高吸水性。 根据本发明的吸水性树脂粉末的制造方法包括通过水溶液聚合步骤获得吸水性交联聚合物颗粒的步骤，并研磨所得交联聚合物颗粒，直到其堆积密度增加至不 低于0.72（g / ml）。 吸水性树脂粉末的特征在于任意粉碎，堆积密度不低于0.74（g / ml），对于0.9重量％生理盐水的吸水能力不低于20（g / g） 负载0.7 psi（4.83 kPa）。 此外，吸收性结构体包含上述吸水性树脂粉末和纤维材料。 吸收性物品包括包含上述吸收结构的吸收层。
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7.发明授权公开(公告)号：US08791210B2
公开(公告)日：2014-07-29
申请号：US13201701
申请日：2010-02-17
申请人： Shigeru Sakamoto , Yoshio Irie , Kozo Nogi , Kunihiko Ishizaki
发明人： Shigeru Sakamoto , Yoshio Irie , Kozo Nogi , Kunihiko Ishizaki
IPC分类号： C08C19/00 , C08F20/10 , C08F222/20 , C08F2/34 , C08F8/00
CPC分类号： C08C19/00 , C08F2/10 , C08F2/16 , C08F2/34 , C08F8/00 , C08F20/10 , C08F220/06 , C08F222/20
摘要： A method for producing a polyacrylic water-absorbent resin powder includes the steps of: producing an acrylic monomer solution in which gas is dissolved and/or dispersed; polymerizing the monomer solution in the absence of a surface active agent or in the presence of not more than 300 ppm of a surface active agent; during or after polymerizing, fragmenting the resulting hydrated gel crosslinked polymer; and drying the fragmented hydrated gel crosslinked polymer, the gas being dissolved and/or dispersed in the monomer solution by (a) applying pressure to the acrylic monomer solution and the gas; (b) creating swirling flows of the acrylic monomer solution and the gas; or (c) introducing the gas with the acrylic monomer solution via fine holes. The production method efficiently produces a water-absorbent resin having an excellent water-absorption rate without deteriorating a liquid-absorbent property of a sanitary product or the like.
摘要翻译： 聚丙烯酸吸水性树脂粉末的制造方法包括以下工序：制造溶解和/或分散有气体的丙烯酸类单体溶液; 在不存在表面活性剂的情况下或在不超过300ppm表面活性剂的存在下聚合单体溶液; 在聚合期间或之后，将所得水合凝胶交联聚合物破碎; 并且通过（a）向丙烯酸单体溶液和气体施加压力，干燥碎裂的水合凝胶交联聚合物，气体溶解和/或分散在单体溶液中; （b）产生丙烯酸单体溶液和气体的旋流; 或（c）通过细孔将丙烯酸单体溶液引入气体。 制造方法有效地制造吸水率优异的吸水性树脂，而不会降低卫生用品等的吸液性。
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8.发明申请公开(公告)号：US20110313113A1
公开(公告)日：2011-12-22
申请号：US13201701
申请日：2010-02-17
申请人： Shigeru Sakamoto , Yoshio Irie , Kozo Nogi , Kunihiko Ishizaki
发明人： Shigeru Sakamoto , Yoshio Irie , Kozo Nogi , Kunihiko Ishizaki
IPC分类号： C08F222/20 , C08F2/34 , C08F2/04 , C08F8/00
CPC分类号： C08C19/00 , C08F2/10 , C08F2/16 , C08F2/34 , C08F8/00 , C08F20/10 , C08F220/06 , C08F222/20
摘要： A production method of the present invention is a polyacrylic water-absorbent resin powder production method including the steps of: producing an acrylic monomer solution in which gas is dissolved and/or dispersed; polymerizing the acrylic monomer solution in the absence of a surface active agent or in the presence of not more than 300 ppm of a surface active agent; during or after the step of polymerizing, fragmenting a hydrated gel crosslinked polymer obtained by polymerizing the acrylic monomer solution; and drying by heat the hydrated gel crosslinked polymer thus fragmented, the gas being dissolved and/or dispersed in the acrylic monomer solution by at least one of the methods (a) to (c): (a) applying pressure to the acrylic monomer solution and the gas; (b) creating swirling flows of the acrylic monomer solution and the gas; and (c) introducing the gas with the acrylic monomer solution via fine holes. Accordingly, the production method of the present invention makes it possible to efficiently produce a water-absorbent resin having an excellent water-absorption rate without deteriorating a liquid-absorbent property of a sanitary product or the like.
摘要翻译： 本发明的制造方法是聚丙烯酸类吸水性树脂粉末的制造方法，其特征在于，包括以下工序：制造溶解和/或分散有气体的丙烯酸类单体溶液; 在不存在表面活性剂的情况下或在不超过300ppm的表面活性剂的存在下聚合丙烯酸类单体溶液; 在通过聚合丙烯酸类单体溶液获得的水合凝胶交联聚合物聚合步骤期间或之后， 并通过加热干燥由此分解的水合凝胶交联聚合物，气体通过方法（a）至（c）中的至少一种溶解和/或分散在丙烯酸单体溶液中：（a）向丙烯酸单体溶液施加压力 和气体; （b）产生丙烯酸单体溶液和气体的旋流; 和（c）通过细孔将丙烯酸单体溶液引入气体。 因此，本发明的制造方法能够有效地制造吸水率优异的吸水性树脂，而不会降低卫生用品等的吸液性。
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9.发明授权Method for producing polyacrylic acid (salt)-based water absorbent resin powder 有权制备聚丙烯酸（盐）基吸水树脂粉末的方法公开(公告)号：US09567414B2
公开(公告)日：2017-02-14
申请号：US13982166
申请日：2012-01-30
申请人： Kozo Nogi , Masatoshi Nakamura , Hirofumi Shibata , Koji Honda , Yusuke Watanabe , Satoshi Matsumoto , Reiko Nakatsuru , Kunihiko Ishizaki , Kazuki Kimura , Sayaka Machida
发明人： Kozo Nogi , Masatoshi Nakamura , Hirofumi Shibata , Koji Honda , Yusuke Watanabe , Satoshi Matsumoto , Reiko Nakatsuru , Kunihiko Ishizaki , Kazuki Kimura , Sayaka Machida
IPC分类号： C08F20/06 , C08F220/06 , C08J3/12 , C09D133/04 , C08J3/24
CPC分类号： C08F20/06 , C08F220/06 , C08J3/12 , C08J3/24 , C08J3/245 , C08J2333/02 , C09D133/04 , C08F2222/1013
摘要： From a view point of reduction in an out of spec product after surface crosslinking, particularly, when an alkylene carbonate compound is used as a surface crosslinking agent, influence by an air temperature is great, and it is necessary to reduce ethylene glycol which is produced as a byproduct, and there is provided a process for producing a polyacrylic acid (salt)-based water absorbent resin powder, comprising a step of polymerizing an aqueous acrylic acid (salt)-based monomer solution, a step of drying the resulting polymer, an optional grinding•classifying step, and a surface crosslinking step, wherein in the surface crosslinking step, (1) a surface crosslinking agent containing an alkylene carbonate compound and a polyhydric alcohol compound is mixed into a water absorbent resin powder, the mixture is heat-reacted and, further, simultaneously with, or separately from the mixing, an ion reactive surface crosslinking agent is mixed, and/or (2) mixing treatment of mixing a surface crosslinking agent solution into a water absorbent resin powder containing at least one or more kinds of ion reactive surface crosslinking agents is performed two or more times.
摘要翻译： 从表面交联后的特定产品的减少的观点来看，特别是使用碳酸亚烷基酯化合物作为表面交联剂时，由于空气温度的影响大，所以需要还原所生成的乙二醇 作为副产物，并且提供了一种制备基于聚丙烯酸（盐）的吸水性树脂粉末的方法，包括使基于丙烯酸（盐）的单体水溶液聚合的步骤，干燥所得聚合物的步骤， 任选的研磨分级步骤和表面交联步骤，其中在表面交联步骤中，（1）将含有碳酸亚烃酯化合物和多元醇化合物的表面交联剂混合到吸水性树脂粉末中，将混合物加热 和/或（2）混合表面的混合处理，和/或（2）混合表面的混合处理 交联剂溶液进入含有至少一种或多种离子反应性表面交联剂的吸水性树脂粉末中进行两次或更多次。
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10.发明申请METHOD FOR PRODUCING POLYACRYLIC ACID (SALT)-BASED WATER ABSORBENT RESIN POWDER 有权生产聚丙烯酸（盐） - 水吸收树脂粉末的方法公开(公告)号：US20140031473A1
公开(公告)日：2014-01-30
申请号：US13982166
申请日：2012-01-30
申请人： Kozo Nogi , Masatoshi Nakamura , Hirofumi Shibata , Koji Honda , Yusuke Watanabe , Satoshi Matsumoto , Reiko Nakatsuru , Kunihiko Ishizaki , Kazuki Kimura , Sayaka Machida
发明人： Kozo Nogi , Masatoshi Nakamura , Hirofumi Shibata , Koji Honda , Yusuke Watanabe , Satoshi Matsumoto , Reiko Nakatsuru , Kunihiko Ishizaki , Kazuki Kimura , Sayaka Machida
IPC分类号： C08F20/06
CPC分类号： C08F20/06 , C08F220/06 , C08J3/12 , C08J3/24 , C08J3/245 , C08J2333/02 , C09D133/04 , C08F2222/1013
摘要： From a viewpoint of reduction in an out of spec product after surface crosslinking, particularly, when an alkylene carbonate compound is used as a surface crosslinking agent, influence by an air temperature is great, and it is necessary to reduce ethylene glycol which is produced as a byproduct, and there is provided a process for producing a polyacrylic acid (salt)-based water absorbent resin powder, comprising a step of polymerizing an aqueous acrylic acid (salt)-based monomer solution, a step of drying the resulting polymer, an optional grinding•classifying step, and a surface crosslinking step, wherein in the surface crosslinking step, (1) a surface crosslinking agent containing an alkylene carbonate compound and a polyhydric alcohol compound is mixed into a water absorbent resin powder, the mixture is heat-reacted and, further, simultaneously with, or separately from the mixing, an ion reactive surface crosslinking agent is mixed, and/or (2) mixing treatment of mixing a surface crosslinking agent solution into a water absorbent resin powder containing at least one or more kinds of ion reactive surface crosslinking agents is performed two or more times.
摘要翻译： 从表面交联后的特定产品的减少的观点出发，特别是使用碳酸亚烷基酯化合物作为表面交联剂时，空气温度的影响大，需要将生成的乙二醇 副产物，并且提供了一种生产聚丙烯酸（盐）基吸水性树脂粉末的方法，包括使基于丙烯酸（盐）的单体水溶液聚合的步骤，干燥所得聚合物的步骤， 任选的研磨分级步骤和表面交联步骤，其中在表面交联步骤中，（1）将含有碳酸亚烃酯化合物和多元醇化合物的表面交联剂混合到吸水性树脂粉末中， 与混合反应，进一步，同时或分开地混合，离子反应性表面交联剂混合，和/或（2）混合处理混合表面cr 将含有至少一种以上离子反应性表面交联剂的吸水性树脂粉末中的脱硫剂溶液进行两次以上。
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