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1.发明授权公开(公告)号：US07312278B2
公开(公告)日：2007-12-25
申请号：US10333614
申请日：2002-06-07
申请人： Yasuhisa Nakashima , Hiroyuki Ikeuchi , Yasuhiro Fujita , Makoto Nagasawa , Shigeru Sakamoto , Yorimichi Dairoku , Katsuyuki Wada , Shinichi Fujino , Toshimasa Kitayama , Kazuhisa Hitomi
发明人： Yasuhisa Nakashima , Hiroyuki Ikeuchi , Yasuhiro Fujita , Makoto Nagasawa , Shigeru Sakamoto , Yorimichi Dairoku , Katsuyuki Wada , Shinichi Fujino , Toshimasa Kitayama , Kazuhisa Hitomi
CPC分类号： A61L15/60
摘要： There is provided: a production process for a water-absorbing agent having stable properties in a short time; and a water-absorbing agent. The production process comprises the step of blending an acid-group-containing water-absorbent resin powder with a noncrosslinkable water-soluble inorganic base and/or an irreducible alkaline-metal-salt pH buffer and further with a dehydratable crosslinking agent reactable with the acid group, thereby subjecting the resin powder to crosslinking treatment, or comprises the step of blending an acid-group-containing water-absorbent resin powder with the above base and/or pH buffer and further with a crosslinking agent reactable with the acid group, thereby subjecting the resin powder to crosslinking treatment, wherein the resin powder has a weight-average particle diameter of 300 to 600 μm wherein the ratio of fine powders having particle diameters of not larger than 150 μm in the resin powder is not more than 10 weight %.
摘要翻译： 提供了一种在短时间内具有稳定性能的吸水剂的生产方法; 和吸水剂。 生产方法包括将含酸基的吸水性树脂粉末与不可交联的水溶性无机碱和/或不可还原的碱金属盐pH缓冲剂以及可与酸反应的可脱水交联剂 从而使树脂粉末进行交联处理，或者包括将含酸基的吸水性树脂粉末与上述碱和/或pH缓冲剂以及与酸基反应的交联剂进一步混合的步骤，由此 使树脂粉末进行交联处理，其中树脂粉末的重均粒径为300〜600μm，其中树脂粉末中粒径不大于150μm的细粉末的比率不大于10重量％ 。
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公开(公告)号：US06867269B2
公开(公告)日：2005-03-15
申请号：US10472048
申请日：2002-12-17
IPC分类号： A61L15/60 , C08F20/06 , C08F220/06
CPC分类号： C08F220/06 , A61L15/60 , C08F20/06 , Y10S524/916 , C08L33/02
摘要： The present invention provides such a production process that a low-cost water-absorbent resin having excellent quality can be obtained by reasonable steps in aqueous solution polymerization. The production process for a water-absorbent resin comprises a polymerization setup that includes the steps of: supplying an aqueous solution of a water-soluble unsaturated monomer component including a major proportion of acrylic acid and/or its salt into a polymerization vessel causing shearing action; and then carrying out polymerization, involving crosslinking, of the water-soluble unsaturated monomer and at the same time carrying out fine division of the resultant hydrogel; with the production process being characterized in that the aqueous solution of the water-soluble unsaturated monomer component as supplied into the polymerization vessel has a temperature of not lower than 40° C.
摘要翻译： 本发明提供了这样一种制备方法，即通过在水溶液聚合中的合理步骤可以获得具有优良品质的低成本吸水性树脂。 吸水性树脂的制造方法包括聚合装置，其包括以下步骤：将包含主要比例的丙烯酸和/或其盐的水溶性不饱和单体组分的水溶液供给到引起剪切作用的聚合容器中 ; 然后进行水溶性不饱和单体的交联聚合，同时进行所得水凝胶的细分; 其制造方法的特征在于，供给到聚合容器中的水溶性不饱和单体成分的水溶液的温度不低于40℃。
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3.发明授权Production processes for basic water-absorbent resin and water-absorbing agent, and use thereof 有权碱性吸水性树脂和吸水剂的制造方法及其用途公开(公告)号：US06881792B2
公开(公告)日：2005-04-19
申请号：US10689075
申请日：2003-10-21
申请人： Nobuyuki Harada , Shigeru Sakamoto , Yoshifumi Adachi , Kazuhisa Hitomi , Kazushi Torii , Toshimasa Kitayama
发明人： Nobuyuki Harada , Shigeru Sakamoto , Yoshifumi Adachi , Kazuhisa Hitomi , Kazushi Torii , Toshimasa Kitayama
CPC分类号： C08J3/245 , C08J3/12 , C08J3/122 , C08J2300/14 , Y10T428/2982
摘要： The present invention provides: a production process for a basic water-absorbent resin to be a main component of a water-absorbing agent which exhibits an excellent water absorption capacity under a load with high productivity; a production process for a water-absorbing agent; and use thereof. The production process for an irregular shape basic water-absorbent resin comprises the step of reacting a basic resin and a crosslinking agent in order to obtain the basic water-absorbent resin, with the process forwarding a crosslinking reaction and pulverizing the resultant product at the same time. The first production process for a water-absorbing agent comprises the step of blending an acidic water-absorbent resin with the basic water-absorbent resin obtained by the above-mentioned process. The second production process for a water-absorbing agent comprises the step of obtaining a mixture of an acidic water-absorbent resin and the basic water-absorbent resin by coexisting with the acidic water-absorbent resin when carrying out the crosslinking reaction and the pulverization in the above-mentioned process.
摘要翻译： 本发明提供：作为吸水剂的主要成分的碱性吸水性树脂的制造方法，其在高生产率的负载下表现出优异的吸水能力; 吸水剂的生产方法; 及其用途。 不规则形状的基本吸水性树脂的制造方法包括使碱性树脂和交联剂反应以获得碱性吸水性树脂的步骤，其中进行交联反应并将所得产物在相同的条件下粉碎 时间。 吸水剂的第一种制备方法包括将酸性吸水性树脂与通过上述方法获得的碱性吸水性树脂混合的步骤。 吸水剂的第二制造方法包括以下步骤：当进行交联反应和粉碎时，通过与酸性吸水性树脂共存获得酸性吸水性树脂和碱性吸水性树脂的混合物 上述过程。
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公开(公告)号：US20090182294A1
公开(公告)日：2009-07-16
申请号：US12295495
申请日：2007-08-31
CPC分类号： C08F220/00 , A61L15/60 , B01J20/267 , C08F2/14
摘要： A water absorbing agent includes water absorbent resin particles which are obtained by polymerizing a water-soluble ethylenic unsaturated monomer and which internally include a cross-linked structure, wherein a pressurized void average radius index is 140 or more. As a result, it is possible to provide a water absorbing agent which essentially includes water absorbent resin particles and is suitable for use in a sanitary material. Specifically, it is possible to improve not only a performance for absorbing and retaining aqueous liquid without pressure or under pressure but also (i) a performance for quickly absorbing aqueous liquid with a great help of a performance of a fibrous material, (ii) a performance for dispersing the aqueous liquid after absorbing the aqueous liquid, and (iii) a performance for retaining the aqueous liquid after absorbing the aqueous liquid.
摘要翻译： 吸水剂包括通过使水溶性烯属不饱和单体聚合并且内部包含交联结构而获得的吸水性树脂颗粒，其中加压空隙平均半径指数为140以上。 结果，可以提供基本上包含吸水性树脂颗粒并适用于卫生材料的吸水剂。 具体而言，不仅可以改善在没有压力或压力的情况下吸收和保留水性液体的性能，还可以（i）在纤维材料的性能的帮助下快速吸收含水液体的性能，（ii） 吸收水性液体后分散水性液体的性能，（iii）在吸收水性液体后保持水性液体的性能。
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公开(公告)号：US09115235B2
公开(公告)日：2015-08-25
申请号：US12295495
申请日：2007-08-31
IPC分类号： C08F36/14 , C08F220/00 , A61L15/60 , B01J20/26
CPC分类号： C08F220/00 , A61L15/60 , B01J20/267 , C08F2/14
摘要： A water absorbing agent includes water absorbent resin particles which are obtained by polymerizing a water-soluble ethylenic unsaturated monomer and which internally include a cross-linked structure, wherein a pressurized void average radius index is 140 or more. As a result, it is possible to provide a water absorbing agent which essentially includes water absorbent resin particles and is suitable for use in a sanitary material. Specifically, it is possible to improve not only a performance for absorbing and retaining aqueous liquid without pressure or under pressure but also (i) a performance for quickly absorbing aqueous liquid with a great help of a performance of a fibrous material, (ii) a performance for dispersing the aqueous liquid after absorbing the aqueous liquid, and (iii) a performance for retaining the aqueous liquid after absorbing the aqueous liquid.
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公开(公告)号：US09187579B2
公开(公告)日：2015-11-17
申请号：US12524989
申请日：2008-02-04
申请人： Hiroyuki Ikeuchi , Hirotama Fujimaru , Makoto Nagasawa , Kazuhiko Sakamoto , Shigeru Sakamoto , Kazushi Torii , Ryoko Tahara
发明人： Hiroyuki Ikeuchi , Hirotama Fujimaru , Makoto Nagasawa , Kazuhiko Sakamoto , Shigeru Sakamoto , Kazushi Torii , Ryoko Tahara
IPC分类号： B01J20/22 , B01J20/26 , C08F20/06 , C08F2/44 , C08F220/06 , C08L33/02 , A61F13/53 , C08F222/10 , C08K5/00 , C08L71/02
CPC分类号： C08F2/44 , A61F2013/530583 , C08F220/06 , C08F222/1006 , C08K5/0008 , C08L33/02 , C08L71/02 , Y10T428/2982 , C08L2666/22
摘要： An object of the present invention is to provide a particle-shaped water absorbing agent having a remarkably improved surface color and excellent water-absorbing properties (better water absorption capacity, and lower water soluble content and residual monomer content) at the same time. In order to attain the object, a particle-shaped water absorbing agent according to the present invention is a particle-shaped water absorbing agent whose main component is a polyacrylic acid and/or a salt thereof, the particle-shaped water absorbing agent having a surface color of Hunter b value in a range of −5 to 10, and having a cross-linking absorption property index (CPI) in a range of 1 to 100, the CPI defined by the following two equations: GEX=(GVs+17)/Ln (water soluble content); Equation 1: CPI=(GEX/residual monomer content)×100 Equation 3: where GVs is gel volume in saline, Ln (water soluble content) is a logarithm natural of water soluble content.
摘要翻译： 本发明的目的是提供一种具有显着改善的表面颜色和优异的吸水性（更好的吸水能力，更低的水溶性含量和残留的单体含量）的颗粒状吸水剂。 为了达到上述目的，本发明的颗粒状吸水剂是主要成分为聚丙烯酸和/或其盐的颗粒状吸水剂，该颗粒状吸水剂具有 Hunter b值的表面颜色在-5至10的范围内，并且交联吸收特性指数（CPI）在1至100的范围内，由以下两个等式定义的CPI：GEX =（GVs + 17 ）/ Ln（水溶性成分）; 方程1：CPI =（GEX /残留单体含量）×100等式3：其中GV是盐水中的凝胶体积，Ln（水溶性含量）是水溶性含量的对数自然。
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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：US20100009846A1
公开(公告)日：2010-01-14
申请号：US12524989
申请日：2008-02-04
申请人： Hiroyuki Ikeuchi , Hirotama Fujimaru , Makoto Nagasawa , Kazuhiko Sakamoto , Shigeru Sakamoto , Kazushi Torii , Ryoko Tahara
发明人： Hiroyuki Ikeuchi , Hirotama Fujimaru , Makoto Nagasawa , Kazuhiko Sakamoto , Shigeru Sakamoto , Kazushi Torii , Ryoko Tahara
CPC分类号： C08F2/44 , A61F2013/530583 , C08F220/06 , C08F222/1006 , C08K5/0008 , C08L33/02 , C08L71/02 , Y10T428/2982 , C08L2666/22
摘要： An object of the present invention is to provide a particle-shaped water absorbing agent having a remarkably improved surface color and excellent water-absorbing properties (better water absorption capacity, and lower water soluble content and residual monomer content) at the same time. In order to attain the object, a particle-shaped water absorbing agent according to the present invention is a particle-shaped water absorbing agent whose main component is a polyacrylic acid and/or a salt thereof, the particle-shaped water absorbing agent having a surface color of Hunter b value in a range of −5 to 10, and having a cross-linking absorption property index (CPI) in a range of 1 to 100, the CPI defined by the following two equations: GEX=(GVs+17)/Ln (water soluble content) Equation 1; CPI=(GEX/residual monomer content)×100 Equation 3 where GVs is gel volume in saline, Ln (water soluble content) is a logarithm natural of water soluble content.
摘要翻译： 本发明的目的是提供一种具有显着改善的表面颜色和优异的吸水性（更好的吸水能力，更低的水溶性含量和残留的单体含量）的颗粒状吸水剂。 为了达到上述目的，本发明的颗粒状吸水剂是主要成分为聚丙烯酸和/或其盐的颗粒状吸水剂，该颗粒状吸水剂具有 Hunter b值的表面颜色在-5至10的范围内，并且交联吸收特性指数（CPI）在1至100的范围内，由以下两个等式定义的CPI：GEX =（GVs + 17 ）/ Ln（水溶性含量）等式1; CPI =（GEX /残留单体含量）×100等式3其中GV是盐水中的凝胶体积，Ln（水溶性含量）是水溶性含量的对数自然。
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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：US07378453B2
公开(公告)日：2008-05-27
申请号：US10798346
申请日：2004-03-12
CPC分类号： C08J3/124 , C08J2300/14
摘要： A surface crosslinking treatment method of a water-absorbing resin powder is disclosed that can overcome various problems in production encountered in the production of surface crosslinked water-absorbing resin powders on an industrial scale and can produce a water-absorbing resin powder having excellent physical properties without causing deterioration in physical properties of resin. The surface crosslinking treatment method of a water-absorbing resin powder includes adding a surface crosslinking agent to a water-absorbing resin powder and heat treating the mixture, wherein (1) the water-absorbing resin powder after the heat treatment is stirred and cooled under an air flow; (2) the water-absorbing resin powder after the heat treatment is cooled under an air flow, and at the same time, at least a part of fine particles of the water-absorbing resin powder and/or the residual crosslinking agent is removed by the air flow; or (3) the water-absorbing resin powder after the heat treatment is cooled and simultaneously granulated, and preferably an aqueous solution is added to the water-absorbing resin powder at a temperature of 40-100° C. during the cooling treatment.
摘要翻译： 公开了一种吸水性树脂粉末的表面交联处理方法，其可以克服在工业规模生产表面交联吸水性树脂粉末时遇到的生产中的各种问题，并且可以制备具有优异物理性能的吸水性树脂粉末 而不会导致树脂的物理性能的劣化。 吸水性树脂粉末的表面交联处理方法包括向吸水性树脂粉末中添加表面交联剂，对该混合物进行热处理，其中（1）将热处理后的吸水性树脂粉末在 气流; （2）热处理后的吸水性树脂粉末在空气流下冷却，同时，吸水性树脂粉末和/或残留交联剂的至少一部分微粒被除去 气流; 或者（3）将热处理后的吸水性树脂粉末冷却并同时造粒，优选在冷却处理期间在40〜100℃的温度下向吸水性树脂粉末中添加水溶液。
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