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公开(公告)号：US06576713B2
公开(公告)日：2003-06-10
申请号：US09789735
申请日：2001-02-22
IPC分类号： C08F22062
CPC分类号： C08J3/12 , C08J3/122 , C08J2300/14 , Y10T428/2982
摘要： The present invention provides a production process for a water-absorbent resin powder which is excellent in particle diameter distribution and properties, wherein the production process not only inhibits adhesion and aggregation in the production steps, but also is excellent in energy efficiency, drying efficiency, and productivity. The production process for a water-absorbent resin powder comprises the steps of: polymerizing an aqueous monomer solution containing a crosslinking agent; heat-drying the resultant crosslinked hydrogel polymer; and pulverizing the resultant dry polymer; wherein: the dry polymer resultant from the heat-drying step is forcibly cooled before or during the pulverization step; and the water-absorbent resin powder has an average particle diameter of 200 to 600 &mgr;m after the pulverization step wherein the total ratio of particles having particle diameters of not larger than 150 &mgr;m and particles having particle diameters of not smaller than 850 &mgr;m in the water-absorbent resin powder is not more than 15 weight % of the water-absorbent resin powder.
摘要翻译： 本发明提供一种吸水性树脂粉末的制造方法，其特征在于，粒径分布和性能优异，其制造方法不仅抑制了制造工序中的粘合和聚集，而且能量效率，干燥效率， 和生产率。 吸水性树脂粉末的制造方法包括以下步骤：使含有交联剂的单体水溶液聚合; 加热干燥所得的交联水凝胶聚合物; 并粉碎所得的干燥聚合物; 其中：由所述加热干燥步骤得到的干燥聚合物在粉碎步骤之前或阶段被强制冷却; 吸水性树脂粉末在粉碎工序中的平均粒径为200〜600μm，其中粒径不大于150μm的颗粒和颗粒直径不小于850μm的颗粒在水中的总比例 - 吸收性树脂粉末的吸水树脂粉末的15重量％以下。
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公开(公告)号：US06107358A
公开(公告)日：2000-08-22
申请号：US915557
申请日：1997-08-21
申请人： Nobuyuki Harada , Koji Miyake , Yoshihiro Motono , Hideyuki Tahara , Takumi Hatsuda , Teruyuki Kanto , Akito Yano , Yorimichi Dairoku , Kazuki Kimura , Yasuhiro Fujita
发明人： Nobuyuki Harada , Koji Miyake , Yoshihiro Motono , Hideyuki Tahara , Takumi Hatsuda , Teruyuki Kanto , Akito Yano , Yorimichi Dairoku , Kazuki Kimura , Yasuhiro Fujita
CPC分类号： C08F2/10 , C08F120/06 , C08F220/06
摘要： A method for the production of a water-absorbent resin capable of fast water absorption is disclosed which comprises the steps of dispersing bubbles of an inert gas in an aqueous monomer solution of a mixture of a water-soluble unsaturated monomer and a water-soluble cross-linking monomer and subjecting the mixture to copolymerization under the condition that a volume of the monomer solution wherein the inert gas is dispersed is in the range of 1.02 to 5 times of a volume of non-dispersant state.
摘要翻译： 公开了一种能够快速吸水的吸水性树脂的制造方法，该方法包括以下步骤：将惰性气体的气泡分散在水溶性不饱和单体和水溶性交联剂的混合物的单体水溶液中 在使分散有惰性气体的单体溶液的体积为非分散状态的体积的1.02〜5倍的条件下进行共聚合。
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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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5.发明授权
公开(公告)号：US4920202A
公开(公告)日：1990-04-24
申请号：US187866
申请日：1988-04-29
申请人： Yoshio Irie , Kaoru Iwasaki , Takumi Hatsuda , Kazumasa Kimura , Nobuyuki Harada , Kunihiko Ishizaki , Tadao Shimomura , Teruaki Fujiwara
发明人： Yoshio Irie , Kaoru Iwasaki , Takumi Hatsuda , Kazumasa Kimura , Nobuyuki Harada , Kunihiko Ishizaki , Tadao Shimomura , Teruaki Fujiwara
IPC分类号： C08F6/00
CPC分类号： C08F6/001
摘要： A method for the production of a hydrophilic polymer having a small residual monomer content from a hydrated gel polymer, which method comprises drying said hydrated gel polymer by contact thereof with a gas containing at least steam and having a dew point in the range of 50.degree. to 100.degree. C. at a temperature in the range of 80.degree. C. to 250.degree. C., and a hydrophilic polymer obtained therefrom.
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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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公开(公告)号：US06998447B2
公开(公告)日：2006-02-14
申请号：US10108572
申请日：2002-03-29
IPC分类号： C08F8/42 , C08F8/44 , C08F20/06 , C08F120/06 , C08F220/06
摘要： In the production of an acrylate polymer by the steps of preparing a water-soluble unsaturated monomer having a ratio of neutralization in the range of 30 to 100 mol % and containing 50 to 100 mol % of an acrylate and then polymerizing the monomer, a method for the production of a hydrophilic resin which comprises using a water-soluble unsaturated monomer having a β-hydroxy propionic acid (salt) content of not more than 1,000 ppm. The hydrophilic resin obtained by this method exhibits excellent physical properties and has only a small residual monomer content. Further, a residual monomer content neither occurs nor increases in any using conditions.
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公开(公告)号：US20050113542A1
公开(公告)日：2005-05-26
申请号：US11014969
申请日：2004-12-20
摘要： In the production of an acrylate polymer by the steps of preparing a water-soluble unsaturated monomer having a ratio of neutralization in the range of 30 to 100 mol % and containing 50 to 100 mol % of an acrylate and then polymerizing the monomer, a method for the production of a hydrophilic resin which comprises using a water-soluble unsaturated monomer having a β-hydroxy propionic acid (salt) content of not more than 1,000 ppm. The hydrophilic resin obtained by this method exhibits excellent physical properties and has only a small residual monomer content. Further, a residual monomer content neither occurs nor increases in any using conditions.
摘要翻译： 在制备丙烯酸酯聚合物时，通过以下步骤制备中和度在30-100mol％范围内并含有50-100mol％丙烯酸酯的水溶性不饱和单体，然后使单体聚合， 用于生产亲水性树脂，其包括使用具有不超过1,000ppm的β-羟基丙酸（盐）含量的水溶性不饱和单体。 通过该方法获得的亲水性树脂显示出优异的物理性能，并且仅具有小的残留单体含量。 此外，残留的单体含量也不会发生，也不会在任何使用条件下增加。
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公开(公告)号：US06667372B1
公开(公告)日：2003-12-23
申请号：US09699491
申请日：2000-10-31
申请人： Koji Miyake , Takumi Hatsuda , Sachio Fujita , Takashi Nishigaki , Kunihiko Ishizaki , Katsuhiro Kajikawa
发明人： Koji Miyake , Takumi Hatsuda , Sachio Fujita , Takashi Nishigaki , Kunihiko Ishizaki , Katsuhiro Kajikawa
IPC分类号： C08F210
CPC分类号： C08F2/10 , Y10S526/93
摘要： A continuous manufacturing method of a water-absorbent polymer by continuously performing a polymerization of a hydrophilic monomer using a solution containing a hydrophilic monomer, includes at least one of the following steps (A) to (D): (A) introducing an inert gas into the solution in a continuous manner before subjecting the solution to a polymerization reaction, and subsequently removing the inert gas from the solution; (B) supplying the solution to a polymerization process, and washing out the solution with water supplied before, at, or after a timing of supplying the solution to the polymerization process; (C) detecting reaction temperatures of a polymerization reaction in non-contact manner at a plurality of points different distances away from a point where a solution is supplied; and (D) supplying water to a water-containing gel and/or transport means when transporting the water-containing gel of the water-absorbent polymer obtained in or after the polymerization reaction.
摘要翻译： 通过使用含有亲水性单体的溶液连续进行亲水性单体的聚合的吸水性聚合物的连续制造方法，包括以下工序（A）〜（D）：（A）中的至少一种，将惰性气体 在将溶液进行聚合反应之前，以连续的方式进入溶液中，随后从溶液中除去惰性气体;（B）将溶液供应到聚合过程中，并用在水， 在将溶液供应到聚合过程的时间之后;（C）以远离提供溶液的点不同距离的多个点以非接触的方式检测聚合反应的反应温度; 和（D）在输送聚合反应中或之后得到的吸水性聚合物的含水凝胶时，向含水凝胶和/或输送装置供水。
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公开(公告)号：US07153910B2
公开(公告)日：2006-12-26
申请号：US10212438
申请日：2002-08-05
申请人： Yorimichi Dairoku , Kunihiko Ishizaki , Takumi Hatsuda , Kazuhisa Hitomi , Katsuhiro Kajikawa , Soichi Yamada
发明人： Yorimichi Dairoku , Kunihiko Ishizaki , Takumi Hatsuda , Kazuhisa Hitomi , Katsuhiro Kajikawa , Soichi Yamada
IPC分类号： C08F20/02
CPC分类号： C08J3/245 , A61L15/60 , C08J3/12 , C08J2300/14 , C08L101/14
摘要： The invention provides: a water-absorbent resin granule-containing composition with resolution of various problems, as caused by water-absorbent resin fine powders, and with high granulation strength, and with no physical property deterioration due to granulation, and, if anything, with improvement of the absorption capacity under a load by granulation; and a process for producing the above granule. A water-absorbent resin primary particle and a water-absorbent resin granule are separately surface-crosslinked and then mixed, or mixed and then surface-crosslinked. The granulation is carried out by mixing a preheated aqueous liquid and a water-absorbent resin powder at a high speed or by supplying a water-absorbent resin powder downstream of an aqueous liquid with a continuous extrusion mixer.
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