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公开(公告)号：US07038081B2
公开(公告)日：2006-05-02
申请号：US10375140
申请日：2003-02-28
IPC分类号： C07C51/16
CPC分类号： C08F20/06
摘要： A method for producing polyacrylic acid includes a combined process of an acrylic acid production process and a polyacrylic acid production process. The acrylic acid production process includes the steps of catalytically oxidizing propylene and/or propane in a gaseous phase to generate reaction product, absorbing the reaction product in a solvent, and purifying acrylic acid from an acrylic acid aqueous solution containing the solvent by purification. The polyacrylic acid production process includes the step of utilizing heat medium recovered in the acrylic acid production process to purify polyacrylic acid from the acrylic acid aqueous solution or from acrylic acid.
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公开(公告)号：US20060025536A1
公开(公告)日：2006-02-02
申请号：US11228332
申请日：2005-09-19
申请人： Yorimichi Dairoku , Kinya Nagasuna , Yoshihiko Masuda , Nobuyuki Harada , Yoshihiro Motono , Kunihiko Ishizaki
发明人： Yorimichi Dairoku , Kinya Nagasuna , Yoshihiko Masuda , Nobuyuki Harada , Yoshihiro Motono , Kunihiko Ishizaki
IPC分类号： C08F120/02 , C08F120/62
CPC分类号： C08J3/245 , A61L15/24 , A61L15/60 , C08F220/06 , C08J2300/14 , C08L33/02
摘要： A method for the production of a water-absorbent agent comprises mixing an absorbent resin containing a carboxyl group with an additive soluble in the aqueous solution of at least one member selected from the group consisting of inorganic acids, organic acids, and polyamino acids and a cross-linking agent capable of reacting with the carboxyl group. A water-absorbent agent obtained by adding from 0.005 to 8 parts by weight of an epoxy compound to 100 parts by weight of a water-absorbent resin, exhibiting an absorption capacity without load of at least 45 (g/g), an absorption capacity under load of 20 g/cm2 of not less than 30 (ml/g) and having a residue amount of an epoxy compound of not more than 2 ppm. A water-absorbent composition comprises a polyamino acid (salt) and a water-absorbent resin containing a carboxyl group.
摘要翻译： 制造吸水剂的方法包括将含羧基的吸收性树脂与可溶于选自无机酸，有机酸和聚氨基酸中的至少一种的水溶液中的添加剂混合，以及 能够与羧基反应的交联剂。 通过将0.005〜8重量份的环氧化合物与100重量份的吸水性树脂相加而获得的吸水剂，其表现出无负载的吸收能力为至少45（g / g），吸收能力 在20g / cm 2以下的负载不小于30（ml / g），残留量为不大于2ppm的环氧化合物。 吸水性组合物包含聚氨基酸（盐）和含有羧基的吸水性树脂。
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公开(公告)号：US06927268B2
公开(公告)日：2005-08-09
申请号：US09883266
申请日：2001-06-19
IPC分类号： C08F2/00 , C08F20/06 , C08F220/46
CPC分类号： C08F20/06
摘要： The present invention provides a process for producing a water-absorbent resin of which the residual monomer content and the extractable content are low. The process for producing a water-absorbent resin comprises the step of polymerizing at least one monomer component including acrylic acid and/or its salt as major components to produce a water-absorbent resin that is a neutralized salt, and this process is characterized in that the acrylic acid is a product obtained by catalytic gas phase oxidation of propylene and/or propane and has a protoanemonin content of not more than 10 ppm, and in that the resultant water-absorbent resin has a neutralization ratio of not less than 50 mol %.
摘要翻译： 本发明提供了残留单体含量和可萃取量低的吸水性树脂的制造方法。 制造吸水性树脂的方法包括使包含丙烯酸和/或其盐的至少一种单体组分作为主要成分进行聚合以产生作为中和盐的吸水性树脂的步骤，该方法的特征在于 丙烯酸是通过丙烯和/或丙烷的催化气相氧化而得到的，具有不高于10ppm的原水蛭素含量的产物，并且所得吸水性树脂的中和率不小于50mol％ 。
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公开(公告)号：US20050113252A1
公开(公告)日：2005-05-26
申请号：US10933319
申请日：2004-09-03
申请人： Koji Miyake , Takahiro Kitano , Kunihiko Ishizaki
发明人： Koji Miyake , Takahiro Kitano , Kunihiko Ishizaki
IPC分类号： C08J3/12 , A61L15/18 , A61L15/60 , C08J3/20 , C08J3/24 , C08L101/14 , C08L1/00 , B01J20/26 , C08J3/00 , C08K3/02 , C08K5/01 , C08K5/02 , C08K5/04 , C08K5/07
CPC分类号： C08J3/20 , A61L15/18 , A61L15/60 , C08J3/245 , C08J2333/00
摘要： A method of producing a particle-shape water-absorbing resin material is realized. With this method, it is possible to prevent deterioration of properties of the particle-shape water-absorbing resin material, and reduces damages onto surfaces thereof. This method is arranged such that (a) water-absorbing resin particles are surface-treated by using a crossing agent so that surfaces of the particles are cross-linked, (b) an additive for giving a function to the particles is added to the particles, (c) and a step of mixing the particles and the additive is carried out in a step of performing particle-size regulating treatment for the particles which includes agglomerated particles.
摘要翻译： 实现了颗粒状吸水性树脂材料的制造方法。 通过该方法，可以防止颗粒状吸水性树脂材料的特性劣化，并且降低对其表面的损伤。 该方法的布置使得（a）吸水性树脂颗粒通过使用交叉剂进行表面处理，使得颗粒的表面交联，（b）将用于赋予颗粒功能的添加剂添加到 颗粒，（c）和混合颗粒和添加剂的步骤在对包括附聚颗粒的颗粒进行粒度调节处理的步骤中进行。
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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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86.发明授权Water-absorbent resin granule-containing composition and production process for water-absorbent resin granule 有权含吸水性树脂颗粒的组合物和吸水性树脂颗粒的生产方法公开(公告)号：US06458921B1
公开(公告)日：2002-10-01
申请号：US09649418
申请日：2000-08-26
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： C08J300
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.
摘要翻译： 本发明提供一种吸水性树脂颗粒的组合物，其由吸水性树脂细粉末引起的各种问题的分解，并且具有高的造粒强度，并且由于造粒而没有物理性能劣化，并且如果有的话， 通过造粒提高负载下的吸收能力; 以及生产上述颗粒的方法。 吸水性树脂一次粒子和吸水性树脂颗粒分别进行表面交联，然后混合或混合，然后进行表面交联。 造粒是通过将预热的水性液体和吸水性树脂粉末进行高速混合，或者通过在连续挤出混合器中向水性液体的下游供给吸水性树脂粉末来进行的。
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公开(公告)号：US06388000B1
公开(公告)日：2002-05-14
申请号：US08427734
申请日：1995-04-24
IPC分类号： C08F2006
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 &bgr;-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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88.发明授权
公开(公告)号：US6001911A
公开(公告)日：1999-12-14
申请号：US860445
申请日：1997-06-26
CPC分类号： A61F13/531 , A61L15/60 , C08J3/075 , A61F2013/15357 , A61F2013/15463 , A61F2013/530583 , A61F2013/530708 , A61F2013/530715 , A61F2013/530744
摘要： A water content of a water-containing gel of a hydrophilic cross-linked polymer is reduced by pressuring (calendaring) it. Then, a gel composition including, for example, a water-containing gel including cross-linked poly(meth)acrylic acid (salt), glycerol (polyhydric alcohol) and polyester fibers (auxiliary forming material), etc., is fed to a drum dryer on an upstream side of a pressurizing roller. Then, the resulting gel composition is pressurized (calendared) heated by a pressurizing roller to be formed into a sheet. As a result, a sheet-like absorbent material having at least one smooth surface can be obtained. The absorbent material resulting from the described method shows excellent properties and especially absorbing properties such as absorbing rate, absorbency under load, and shape retaining properties.
摘要翻译： PCT No.PCT / JP96 / 03191 Sec。 371日期：1997年6月26日 102（e）日期1996年6月26日PCT提交1996年10月31日PCT公布。 公开号WO97 / 16492 日期1997年5月9日亲水性交联聚合物的含水凝胶的含水量通过加压（压延）而降低。 然后，将包含交联聚（甲基）丙烯酸（盐），甘油（多元醇）和聚酯纤维（辅助成形材料）等的含水凝胶等的凝胶组合物供给到 滚筒式干燥机在加压辊的上游侧。 然后，将所得凝胶组合物加压（压延），由加压辊加热以形成片材。 结果，可以获得具有至少一个平滑表面的片状吸收材料。 由所述方法得到的吸收材料显示出优异的性能，特别是吸收速率，负载下的吸收性和形状保持性等吸收性能。
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89.发明授权公开(公告)号：US10301398B2
公开(公告)日：2019-05-28
申请号：US12308803
申请日：2007-07-19
摘要： A method according to the present invention for producing water absorbent resin powder is a method for producing water absorbent resin having a surface cross-linked structure, and includes: a polymerization step in which an unsaturated monomer aqueous solution is polymerized; a drying step in which a hydrogel cross-linked polymer obtained in the polymerization step is dried; a surface treatment step in which the hydrogel cross-linked polymer or a dried hydrogel cross-linked polymer is subjected to a surface treatment; and a sorting step, carried out after the drying step, in which a foreign matter included in a water absorbent resin is color-sorted from the water absorbent resin entirely or partially. As a result, it is possible to obtain a water absorbent resin which has high properties and is less likely to be colored. In this way, there is provided the water absorbent resin powder production method in which the color sorting technique is used to remove foreign matters from the water absorbent resin.
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90.发明授权Polyacrylic acid (salt)-type water absorbent resin and method for producing of same 有权聚丙烯酸（盐）型吸水性树脂及其制造方法公开(公告)号：US09138505B2
公开(公告)日：2015-09-22
申请号：US13392256
申请日：2010-08-27
申请人： Kozo Nogi , Kunihiko Ishizaki , Katsuyuki Wada
发明人： Kozo Nogi , Kunihiko Ishizaki , Katsuyuki Wada
IPC分类号： C08F20/02 , A61L15/24 , C08J3/24 , A61L15/60 , C08F120/06 , C08F220/06
CPC分类号： A61L15/24 , A61L15/60 , C08F120/06 , C08F220/06 , C08J3/24 , C08J3/245 , C08J2300/14 , C08J2333/02 , C08L33/08 , C08F2222/1013
摘要： Disclosed is a method for producing a water absorbent resin, by which a surface-crosslinked water absorbent resin having excellent physical properties can be efficiently obtained at low cost, while assuring high productivity. When the production scale is increased to a continuous production on a huge scale (for example, 1 t/hr or more), the physical properties are improved and stabilized (for example, standard deviation of the physical properties is reduced) by a surface-crosslinking treatment, and the absorption against pressure (AAP) and liquid permeability (SFC) are further improved. Specifically disclosed is a method for continuously producing a polyacrylic acid (salt)-type water absorbent resin powder, which comprises: a step of preparing an aqueous monomer solution using an acrylic acid (salt); a step of polymerizing the aqueous monomer solution; a shredding step of a hydrous gel-like crosslinked polymer during or after the polymerization; a step of drying the thus-obtained particulate hydrous gel-like crosslinked polymer; a step of crushing and classifying the dried product; a step of heating and surface-crosslinking after the classification; and a step of cooling after the surface-crosslinking. In the method for producing a polyacrylic acid (salt)-type water absorbent resin, the internal area of the cooling device that is used in the cooling step is 0.25-0.95 times the internal area of the heating device that is used in the surface-crosslinking step.
摘要翻译： 公开了一种生产吸水性树脂的方法，通过该方法可以以低成本有效地获得具有优异物理性能的表面交联吸水性树脂，同时确保高生产率。 当生产规模以大规模（例如1吨/小时以上）增加到连续生产时，通过表面活性剂改善和稳定物理性能（例如物理性能的标准偏差） 交联处理，耐压吸收（AAP）和液体渗透性（SFC）进一步提高。 具体公开了一种连续生产聚丙烯酸（盐）型吸水性树脂粉末的方法，其包括：使用丙烯酸（盐）制备单体水溶液的步骤; 聚合单体水溶液的步骤; 在聚合期间或之后的含水凝胶状交联聚合物的粉碎步骤; 干燥由此得到的颗粒含水凝胶状交联聚合物的步骤; 破碎和分级干燥产品的步骤; 分类后加热和表面交联的步骤; 和表面交联后的冷却步骤。 在聚丙烯酸（盐）型吸水性树脂的制造方法中，冷却工序中使用的冷却装置的内部面积为表面活性剂中使用的加热装置的内部面积的0.25〜0.95倍， 交联步骤。
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