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公开(公告)号：US06469080B2
公开(公告)日：2002-10-22
申请号：US09734190
申请日：2000-12-12
IPC分类号： C08K509
摘要： The present invention provides a water-absorbent resin composition which contains an aminoacetic chelating agent and is excellent in the urine resistance, wherein the water-absorbent resin composition is excellent further in the light resistance and becomes little colored and might have deodorizability. A water-absorbent resin composition, which comprises a water-absorbent resin and an aminoacetic chelating agent, wherein the mixing ratio of the aminoacetic chelating agent in the water-absorbent resin composition is not less than 10 ppm of the water-absorbent resin, and wherein the total content of nitrilotriacetic acid and its salt in the water-absorbent resin composition is not more than 1 ppm of the water-absorbent resin composition.
摘要翻译： 本发明提供一种含有氨基乙酸螯合剂并且耐尿性优异的吸水性树脂组合物，其中吸水性树脂组合物在耐光性方面进一步优异且变色少且可能具有除臭性。 一种吸水性树脂组合物，其包含吸水性树脂和氨基乙酸螯合剂，其中吸水性树脂组合物中氨基乙酸螯合剂的混合比不小于吸水性树脂的10ppm， 其中吸水性树脂组合物中次氮基三乙酸及其盐的总含量不超过吸水性树脂组合物的1ppm。
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公开(公告)号：US07183456B2
公开(公告)日：2007-02-27
申请号：US10764535
申请日：2004-01-27
申请人： Takumi Hatsuda , Yoshio Irie , Masatoshi Nakamura , Katsuyuki Wada , Shinichi Fujino , Kazuki Kimura , Kunihiko Ishizaki
发明人： Takumi Hatsuda , Yoshio Irie , Masatoshi Nakamura , Katsuyuki Wada , Shinichi Fujino , Kazuki Kimura , Kunihiko Ishizaki
CPC分类号： C08J3/122 , A61L15/60 , C08J3/245 , C08J2300/14 , Y10S524/916 , Y10T428/2982
摘要： In a production process for a water-absorbent resin, comprising the steps of: blending a liquid material and a water-absorbent resin; and heating the resultant mixture in order to produce a modified water-absorbent resin, the present invention is to provide: a method for uniformly and efficiently treating a water-absorbent resin favorably in view of industry, and as a result, a good-balanced water-absorbent resin having various excellent properties, such absorption capacity without a load, absorption capacity under a load, and single-layer absorption capacity under a load in contact with an aqueous liquid. The production process comprises the step of spray-blending a water-absorbent resin (A) and a liquid material (B) with a blending apparatus equipped with a spray nozzle (C), wherein the liquid material (B) is sprayed from the spray nozzle (C) and its spray pattern is a circular and hollow cone shape or a double-convex-lens and elliptic cone shape. In addition, the production process comprises the step of heat-treating a water-absorbent resin under an atmosphere having a dew point of not higher than 60° C. and a temperature of not lower than 90° C., wherein the water-absorbent resin is obtained after a drying step following a pulverization step.
摘要翻译： 在吸水性树脂的制造方法中，包括以下步骤：将液体材料和吸水性树脂混合; 并加热得到的混合物以制备改性吸水性树脂，本发明提供一种从工业上有利地均匀有效地处理吸水性树脂的方法，结果是良好平衡 具有各种优异性能的吸水性树脂，这种无负载的吸收能力，负载下的吸收能力以及在与水性液体接触的负荷下的单层吸收能力。 制备方法包括用配有喷嘴（C）的混合装置将吸水性树脂（A）和液体材料（B）喷雾共混的步骤，其中液体材料（B）从喷雾 喷嘴（C）及其喷射图案是圆形和中空圆锥形或双凸透镜和椭圆锥形。 此外，制造方法包括在露点不高于60℃，温度不低于90℃的气氛下对吸水性树脂进行热处理的步骤，其中吸水剂 在粉碎步骤之后的干燥步骤之后获得树脂。
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公开(公告)号：US06720389B2
公开(公告)日：2004-04-13
申请号：US09945812
申请日：2001-09-05
申请人： Takumi Hatsuda , Yoshio Irie , Masatoshi Nakamura , Katsuyuki Wada , Shinichi Fujino , Kazuki Kimura , Kunihiko Ishizaki
发明人： Takumi Hatsuda , Yoshio Irie , Masatoshi Nakamura , Katsuyuki Wada , Shinichi Fujino , Kazuki Kimura , Kunihiko Ishizaki
IPC分类号： C08J324
CPC分类号： C08J3/122 , A61L15/60 , C08J3/245 , C08J2300/14 , Y10S524/916 , Y10T428/2982
摘要： In a production process for a water-absorbent resin, comprising the steps of: blending a liquid material and a water-absorbent resin; and heating the resultant mixture in order to produce a modified water-absorbent resin, the present invention is to provide: a method for uniformly and efficiently treating a water-absorbent resin favorably in view of industry, and as a result, a good-balanced water-absorbent resin having various excellent properties, such absorption capacity without a load, absorption capacity under a load, and single-layer absorption capacity under a load in contact with an aqueous liquid. The production process comprises the step of spray-blending a water-absorbent resin (A) and a liquid material (B) with a blending apparatus equipped with a spray nozzle (C), wherein the liquid material (B) is sprayed from the spray nozzle (C) and its spray pattern is a circular and hollow cone shape or a double-convex-lens and elliptic cone shape. In addition, the production process comprises the step of heat-treating a water-absorbent resin under an atmosphere having a dew point of not higher than 60° C. and a temperature of not lower than 90° C., wherein the water-absorbent resin is obtained after a drying step following a pulverization step.
摘要翻译： 在吸水性树脂的制造方法中，包括以下步骤：将液体材料和吸水性树脂混合; 并加热得到的混合物以制备改性吸水性树脂，本发明提供一种从工业上有利地均匀有效地处理吸水性树脂的方法，结果是良好平衡 具有各种优异性能的吸水性树脂，这种无负载的吸收能力，负载下的吸收能力以及在与水性液体接触的负荷下的单层吸收能力。 制备方法包括用配有喷嘴（C）的混合装置将吸水性树脂（A）和液体材料（B）喷雾共混的步骤，其中液体材料（B）从喷雾 喷嘴（C）及其喷射图案是圆形和中空圆锥形或双凸透镜和椭圆锥形。 此外，制造方法包括在露点不高于60℃，温度不低于90℃的气氛下对吸水性树脂进行热处理的步骤，其中吸水剂 在粉碎步骤之后的干燥步骤之后获得树脂。
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4.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：US07960469B2
公开(公告)日：2011-06-14
申请号：US10562140
申请日：2004-06-23
申请人： Yoshifumi Adachi , Takahiro Kitano , Shinichi Fujino , Katsuyuki Wada , Kazushi Torii , Taku Iwamura , Sayaka Machida
发明人： Yoshifumi Adachi , Takahiro Kitano , Shinichi Fujino , Katsuyuki Wada , Kazushi Torii , Taku Iwamura , Sayaka Machida
IPC分类号： C08L33/00 , C08F220/04 , C08K3/10 , C08K3/08 , C08L29/04
CPC分类号： A61L15/60 , A61F2013/530686 , A61F2013/530744
摘要： The production method of a water absorbent resin composition including a particulate water absorbent resin, wherein: 95 wt % or more of particles whose particle diameter is less than 850 μm and not less, than 106 μm are contained, and a weight average particle diameter of the particles is less than 500 μm and not less than 300 μm and a logarithmic standard deviation (σξ) of a particle size distribution is 0.45 or less, and a water-soluble component of the water absorbent composition is 35 wt % or less, and a multivalent metal component is contained, and an extraction rate of the multivalent metal component is 5.0 wt % or more and less than 100 wt %, thereby providing the water absorbent resin composition, free from any coagulation of particles in high humidity, which has superior absorbent property in terms of an absorbency and a diffusing absorbency under pressure.
摘要翻译： 含有颗粒状吸水性树脂的吸水性树脂组合物的制造方法，其中，含有95重量％以上的粒径小于850μm且不小于106μm的颗粒，重均粒径为 颗粒小于500μm且不小于300μm，并且颗粒尺寸分布的对数标准偏差（＆amp; mgr）为0.45或更小，并且吸水组合物的水溶性组分为35重量％或 并且含有多价金属成分，多价金属成分的提取率为5.0重量％以上且小于100重量％，从而提供在高湿度下没有任何凝结的吸水性树脂组合物， 其在压力下的吸收性和扩散吸收性方面具有优异的吸收性。
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公开(公告)号：US20070106013A1
公开(公告)日：2007-05-10
申请号：US10562140
申请日：2004-06-23
申请人： Yoshifumi Adachi , Takahiro Kitano , Shinichi Fujino , Katsuyuki Wada , Kazushi Torii , Taku Iwamura , Sayaka Machida
发明人： Yoshifumi Adachi , Takahiro Kitano , Shinichi Fujino , Katsuyuki Wada , Kazushi Torii , Taku Iwamura , Sayaka Machida
IPC分类号： C09D5/02
CPC分类号： A61L15/60 , A61F2013/530686 , A61F2013/530744
摘要： The production method of a water absorbent resin composition including a particulate water absorbent resin, wherein: 95 wt % or more of particles whose particle diameter is less than 850 μm and not less, than 106 μm are contained, and a weight average particle diameter of the particles is less than 500 μm and not less than 300 μm and a logarithmic standard deviation (σξ) of a particle size distribution is 0.45 or less, and a water-soluble component of the water absorbent composition is 35 wt % or less, and a multivalent metal component is contained, and an extraction rate of the multivalent metal component is 5.0 wt % or more and less than 100 wt %, thereby providing the water absorbent resin composition, free from any coagulation of particles in high humidity, which has superior absorbent property in terms of an absorbency and a diffusing absorbency under pressure.
摘要翻译： 含有颗粒状吸水性树脂的吸水性树脂组合物的制造方法，其中含有95重量％以上的粒径小于850μm，不小于106μm的颗粒，重量平均粒径为 粒子小于500μm且不小于300μm，粒度分布的对数标准偏差（sigmaxi）为0.45以下，吸水性组合物的水溶性成分为35重量％以下， 含有多价金属成分，多价金属成分的提取率为5.0重量％以上且小于100重量％，因此提供了在高湿度下没有任何凝结的高吸湿性树脂组合物，其具有优异的 就吸收性而言，在压力下的扩散吸收性。
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公开(公告)号：US06265488B1
公开(公告)日：2001-07-24
申请号：US09253858
申请日：1999-02-21
IPC分类号： C08L3302
CPC分类号： B01J20/267 , C08F8/00 , C08F2810/20 , C08F220/06
摘要： The invention provides a process for producing a water-absorbing agent by using a crosslinking agent of high molecular weight, wherein the water-absorbing agent is excellent with good balance in respect to the absorption capacities under no load and under a heavy load and can display excellent absorption properties even if the weight percentage of the water-absorbent resin (resin concentration) is high when the water-absorbent resin is used for materials such as hygienic products. In a production process for a water-absorbing agent comprising the steps of mixing a water-absorbent resin with a crosslinking agent and heating the resultant mixture wherein the water-absorbent resin has a carboxyl group; the invention is characterized in that the crosslinking agent has a group reactable upon the carboxyl group, an average molecular weight of 500 or more, and a repeating structural unit of general formula (1) below: —[(CH2CH2O)m—CH2—CH(OH)CH2—O]— (1) wherein m is an integer of 1 to 10.
摘要翻译： 本发明提供了一种通过使用高分子量交联剂制备吸水剂的方法，其中吸水剂在空载和重载下的吸收容量方面具有优异的平衡性，并能显示出 即使吸水性树脂用于卫生产品等材料，即使吸水性树脂（树脂浓度）的重量百分比较高，吸收性也优异。 在吸水剂的制造方法中，包括以下步骤：将吸水性树脂与交联剂混合，加热所得到的混合物，其中吸水性树脂具有羧基; 本发明的特征在于交联剂具有可在羧基上反应的基团，平均分子量为500以上的基团和下述通式（1）的重复结构单元：其中m为1〜10的整数。
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公开(公告)号：US06297319B1
公开(公告)日：2001-10-02
申请号：US09432018
申请日：1999-11-02
IPC分类号： C08F800
CPC分类号： C08L101/00 , A61L15/60 , C08F8/30 , C08L101/14 , C08L2666/20 , C08L2666/14
摘要： The present invention provides: a process for producing a water-absorbing agent by using a crosslinking agent of high safety, wherein the water-absorbing agent is excellent in the absorption capacities under no load and under a load and further in the blocking ratio under a load, and can display excellent absorption properties even if the weight percentage of the water-absorbent resin (resin concentration) is high when the water-absorbent resin is used for materials such as sanitary materials; and such a water-absorbing agent. The water-absorbent resin is mixed and treated with an oxazoline compound, wherein the oxazoline compound has at least three structural units of general formula (1) below: wherein R1˜R4 separately denote a hydrogen atom, an alkyl group, an aromatic group, a halogen group, a substituted alkyl group, or a substituted aromatic group.
摘要翻译： 本发明提供一种通过使用高安全性的交联剂制造吸水剂的方法，其中吸水剂在空载和负载下的吸收容量优异， 即使吸水性树脂用于卫生材料等材料，即使吸水性树脂（树脂浓度）的重量百分比高，也能显示优异的吸收性能; 和这种吸水剂。 吸水性树脂混合并用恶唑啉化合物处理，其中恶唑啉化合物具有至少三个下列通式（1）的结构单元：其中R1〜R4分别表示氢原子，烷基，芳基， 卤素基，取代的烷基或取代的芳基。
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公开(公告)号：US10099254B2
公开(公告)日：2018-10-16
申请号：US12532909
申请日：2008-03-24
摘要： A particulate water absorbent resin is obtained by polymerizing an unsaturated monomer so as to form a cross-linked polymer hydrogel and drying and pulverizing the cross-linked polymer hydrogel, and plural classification steps different from each other are carried out so as to remove fine powder. In this manner, the present invention provides the method for classification of particulate water absorbent resin which method allows particulate water absorbent resin having a desired particle diameter range to be efficiently obtained at low cost while securing the high productivity even in case where a larger production equipment is used.
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10.发明授权公开(公告)号：US09074030B2
公开(公告)日：2015-07-07
申请号：US13807530
申请日：2011-06-29
申请人： Toshihiro Takaai , Hidenori Wada , Shinichi Fujino
发明人： Toshihiro Takaai , Hidenori Wada , Shinichi Fujino
CPC分类号： C08J9/122 , A61L15/24 , A61L15/60 , C08F2/01 , C08F20/00 , C08F220/06 , C08J3/245 , C08J9/20 , C08J9/36 , C08J2203/06 , C08J2205/05 , C08J2333/02 , C08J2335/02 , Y10T428/2982 , C08L33/02 , C08F2222/1013
摘要： Provided is a method for producing a water absorbent resin, which promotes the formation of interconnected voids (continuous gas bubbles) in a foamed polymer (foam-like water absorbent resin) by a more convenient method, and produces with high efficiency a water absorbent resin which exhibits a high water absorption rate even when stepped into a sheet form or a powder form in hygiene articles and the like. Disclosed is a a method for producing a polyacrylic acid-type water absorbent resin, comprising (A) a step of obtaining an aqueous solution of acrylic acid-type monomers containing gas bubbles dispersed therein; (B) a step of polymerizing the aqueous monomer solution and thereby obtaining a foamed polymer; and (C) a step of heating and drying the foamed polymer, wherein gas bubbles are incorporated such that the volumetric expansion factor defined by the following formula (1); [Formula 1] Volumetric expansion factor=(Volume of aqueous monomer solution after gas bubble dispersion)/(volume of aqueous mononer solution before gas bubble dispersion) Formula (1); exceeds 1.1 times, and the aqueous monomer solution having a monomer concentration defined by the following formula (2); [Formula 2] Monomer concentration [wt %]=(Weight of a monomer)/{(weight of a monomer)+(weight of solvent)}×100 Formula (2); of 40% by weight or greater is boiling polymerized at a temperature of 100° C. or higher.
摘要翻译： 提供一种通过更方便的方法促进发泡聚合物（泡沫状吸水性树脂）中形成互连空隙（连续气泡）的吸水性树脂的制造方法，高效率地制造吸水性树脂 即使在卫生用品等中成为片状或粉末状时，也显示出高的吸水率。 本发明提供一种聚丙烯酸型吸水性树脂的制造方法，其特征在于，包括：（A）获得含有分散在其中的气泡的丙烯酸型单体的水溶液的工序; （B）使单体水溶液聚合，得到发泡聚合物的工序; 和（C）加热和干燥发泡聚合物的步骤，其中加入气泡，使得由下式（1）定义的体积膨胀系数; [式1]体积膨胀系数=（气泡分散后的单体水溶液的体积）/（气泡分散前的单体溶液的体积）式（1） 超过1.1倍，单体浓度由下式（2）定义的单体水溶液; [式2]单体浓度[wt％] =（单体重量）/ {（单体重量）+（溶剂重量）}×100式（2） 为40重量％以上时，在100℃以上的温度下进行沸腾聚合。
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