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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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公开(公告)号：US07238743B2
公开(公告)日：2007-07-03
申请号：US11143628
申请日：2005-06-03
IPC分类号： C08F20/06
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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43.发明授权公开(公告)号：US06992144B2
公开(公告)日：2006-01-31
申请号：US10229111
申请日：2002-08-28
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： C08F8/32
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：US20050228154A1
公开(公告)日：2005-10-13
申请号：US11143628
申请日：2005-06-03
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 %.
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公开(公告)号：US5475062A
公开(公告)日：1995-12-12
申请号：US186560
申请日：1994-01-26
CPC分类号： C08F8/14 , A61L15/20 , A61L15/60 , B01J20/261 , B01J20/265 , B01J20/28004 , B01J20/28014 , B01J20/3021 , B01J20/3078 , B01J20/321 , B01J20/3248 , C08F2810/20
摘要： A method for the surface treatment of an absorbent resin is proposed which notably improves the absorption capacity of the absorbent resin under pressure without impairing safety and hydroscopic flowability. The method comprises adding an organic carboxylic ester of a polyhydric alcohol to the absorbent resin and then heat-treating the resultant mixture.
摘要翻译： 提出了一种用于表面处理吸收性树脂的方法，该方法在不损害安全性和吸湿性的流动性的情况下，显着提高了吸收性树脂在加压下的吸收能力。 该方法包括向吸收树脂中加入多元醇的有机羧酸酯，然后热处理所得的混合物。
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公开(公告)号：US5389722A
公开(公告)日：1995-02-14
申请号：US70765
申请日：1993-06-03
申请人： Kinya Nagasuna , Kunihiko Ishizaki
发明人： Kinya Nagasuna , Kunihiko Ishizaki
IPC分类号： A61L15/60 , C08F220/04 , C08F220/28 , C08F8/00
CPC分类号： C08F220/28 , A61L15/60 , C08F220/04
摘要： A hydrophilic resin is produced by a method which comprises copolymerizing a hydrophilic unsaturated monomer with 0.001 to 50 mol %, based on the amount of said monomer, of a first cross-linking agent possessing a structural unit represented by the general formula (I): ##STR1## wherein n represents an integer of at least 1, and then heat-treating the product of the copolymerization. An absorbent resin is produced by a method which comprises treating the hydrophilic resin obtained as described above, in the surface region of the resin, in the presence of a third cross-linking agent capable of reacting with the functional group of the hydrophilic resin.The absorbent ratio of the absorbent resin with respect to physiological saline solution is able to be increased to at least 20 g/g as compared to its original level by being heat-treated at a temperature of 150.degree. C. for 30 minutes.
摘要翻译： 通过以下方法制备亲水性树脂：使具有由通式（I）表示的结构单元的第一交联剂以基于所述单体的量使亲水性不饱和单体为0.001〜50摩尔％的方法： （I）其中n表示至少为1的整数，然后热处理共聚产物。 通过在与能够与亲水性树脂的官能团反应的第三交联剂的存在下，在树脂的表面区域中处理上述得到的亲水性树脂的方法制造吸水性树脂。 通过在150℃的温度下热处理30分钟，吸收性树脂相对于生理盐水溶液的吸收比可与原来的水平相比提高至至少20g / g。
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公开(公告)号：US4959060A
公开(公告)日：1990-09-25
申请号：US449456
申请日：1989-12-12
摘要： A body fluid-absorbing article such as, for example, a disposable diaper is provided with at least one absorbent member comprising 50 to 99% by weight of a fibrous material and 50 to 1% by weight of an absorbent polymer, which absorbent member contains at least one compound (A) selected from the group consisting of sulfur-containing reducing agents, antioxidants, and oxidizing agents. By the action of the compound (A), the swelled gel of the absorbent polymer formed in consequence of absorption of body fluid is prevented from being deteriorated or decomposed by aging.
摘要翻译： 诸如例如一次性尿布的体液吸收制品设置有至少一个包含50至99重量％的纤维材料和50至1重量％的吸收性聚合物的吸收构件，该吸收性构件包含 至少一种选自含硫还原剂，抗氧化剂和氧化剂的化合物（A）。 通过化合物（A）的作用，防止由吸收体液而形成的吸收性聚合物的溶胀凝胶由于老化而劣化或分解。
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48.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：US10307506B2
公开(公告)日：2019-06-04
申请号：US13634128
申请日：2011-03-14
摘要： The disclosed process for continuously producing a water-absorbing resin comprising a plurality of joined continuous steps; a polymerization step of polymerizing an aqueous unsaturated monomer solution, a drying step of drying a particulated water-containing gel-like crosslinked polymer obtained in a finely crushing step during the polymerization or after the polymerization, a pulverizing step after the drying, a classification step after the drying, and a surface treatment step for the water-absorbing resin powder after the classification step. In the process, with some of the above steps kept running, the other steps are interrupted, and subsequently all the steps are restarted.
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公开(公告)号：US09453091B2
公开(公告)日：2016-09-27
申请号：US13635045
申请日：2011-03-17
申请人： Sumio Okuda , Syuji Kanzaki , Kunihiko Ishizaki , Shinichi Fujino , Kozo Nogi
发明人： Sumio Okuda , Syuji Kanzaki , Kunihiko Ishizaki , Shinichi Fujino , Kozo Nogi
IPC分类号： A61L15/24 , C08F120/06 , C08F220/06 , C08J3/24 , B07B1/56 , C08F6/00 , B07B13/16 , G01N15/02 , B07B1/28
CPC分类号： C08F120/06 , B07B1/28 , B07B1/54 , B07B1/56 , B07B13/16 , C08F6/008 , C08F220/06 , C08J3/24 , C08J3/245 , C08J2300/14 , G01N15/0272 , G01N2015/0277 , G01N2015/0288
摘要： A method for producing a water absorbent resin, the method including a polymerization step, a drying step, a classification step, and a surface crosslinking step. The classification step carried out before or after the surface crosslinking step requires use of a metal sieve mesh having stretch tension from 35 to 100 N/cm, in which an air jet cleaner or an air jet brush cleaner and plural tapping balls or tapping blocks are installed below the metal sieve mesh, a classification aid particle having specific gravity different from that of the water absorbent resin powder is added, and a fine powder of the water absorbent resin and the classification aid particle are removed.
摘要翻译： 一种吸水性树脂的制造方法，其包括聚合工序，干燥工序，分级工序以及表面交联工序。 在表面交联步骤之前或之后进行的分级步骤需要使用具有35至100N / cm的拉伸张力的金属筛网，其中空气喷射清洁器或空气喷射刷清洁器和多个敲击球或攻丝块是 在金属筛网的下方，添加比重与吸水性树脂粉末不同的分级助剂粒子，除去吸水性树脂和分级助剂粒子的细粉末。
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