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公开(公告)号：US5229488A
公开(公告)日：1993-07-20
申请号：US576942
申请日：1990-09-04
IPC分类号： C08F6/00
CPC分类号： C08F6/001
摘要： An absorbent resin is produced by a method which comprises adding to 100 parts by weight of an absorbent resin powder an aqueous liquid containing 7 to 100 parts by weight of water and a reducing substance in the presence of 0.01 to 5 parts by weight of at least one additive selected from the group consisting of water-insoluble fine powders and surfactants. The absorbent resin thus produced excels in absorption properties and exhibits a low residual monomer content.
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公开(公告)号：US5532323A
公开(公告)日：1996-07-02
申请号：US26407
申请日：1993-03-04
申请人： Kazutaka Yano , Katsuhiro Kajikawa , Kinya Nagasuna , Yoshio Irie
发明人： Kazutaka Yano , Katsuhiro Kajikawa , Kinya Nagasuna , Yoshio Irie
IPC分类号： A61L15/60 , C08F220/04 , C08F8/14 , C08J3/24
CPC分类号： C08F220/04 , A61L15/60
摘要： An absorbent resin exhibiting a high absorption ratio, having only a small water-soluble component content, and have excellent gel stability to withstand the effect of aging is produced. The production of the absorbent resin comprises a step of polymerizing a water-soluble monoethylenically unsaturated monomer by using, in a proportion of 0.01-0.3 mol % based on the amount of the water-soluble monoethylenically unsaturated monomer, a cross-linking agent having at least one group of the following formula I: ##STR1## wherein R.sup.1 is an alkylene group of 2 to 4 carbon atoms interposed between two polymerizing unsaturated groups in the molecular unit thereof and then heat-treating the resin produced by the polymerization at a temperature in the range of from 160.degree. to 230.degree. C.
摘要翻译： 产生具有高吸收比，仅具有小的水溶性组分含量并且具有优异的凝胶稳定性以抵抗老化的效果的吸收性树脂。 吸收性树脂的制造包括以水溶性单烯属不饱和单体的量为基准，以水溶性单烯键式不饱和单体的量计，以0.01-0.3摩尔％的比例使用水溶性单烯属不饱和单体的交联剂 至少一组下列通式I：（CH2CH2OR1O）（I）其中R1是分子单元中两个聚合不饱和基团之间插入2至4个碳原子的亚烷基，然后热处理由聚合产生的树脂 温度范围为160〜230℃。
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公开(公告)号：US5478879A
公开(公告)日：1995-12-26
申请号：US822916
申请日：1992-01-21
CPC分类号： C08F2/10 , Y10S524/916
摘要： A method for the production of an absorbent resin, which method comprises mixing 100 parts by weight of (A) a hydrated gel of absorbent resin which is resulted from aqueous solution polymerization having a polymerization ratio in the range of from 60 to 99%, an average particle diameter in the range of from 0.1 to 200 mm, a water content in the range of from 30 to 90% by weight, and a temperature in the range of from 40.degree. to 110.degree. C., with from 1 to 50 parts by weight of (B) a substantially dry fine absorbent resin powder having an average particle diameter smaller than the average particle diameter assumed by said hydrated gel of absorbent resin (A) while in a dried state, then raising the polymerization ratio of said hydrated gel of absorbent resin (A) to a level higher than the polymerization ratio of said hydrated gel when being mixed.
摘要翻译： 一种制造吸收性树脂的方法，该方法包括将100重量份由（A）由聚合率为60-99％范围的水溶液聚合得到的吸水性树脂的水合凝胶， 平均粒径为0.1〜200mm，水含量为30〜90重量％，温度为40〜110℃，1〜50份 （B）在干燥状态下，平均粒径小于由吸水性树脂（A）的所述水合凝胶构成的平均粒径的基本上干燥的细小吸水树脂粉末，然后提高所述水合凝胶的聚合比例 的吸水性树脂（A）的混合比例高于所述水合凝胶的混合比。
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4.发明授权Water-absorbing agent production process with surface crosslinking and ion blocking 有权吸水剂生产工艺具有表面交联和离子封闭公开(公告)号：US07420018B2
公开(公告)日：2008-09-02
申请号：US11177725
申请日：2005-07-09
申请人： Katsuyuki Wada , Hiroko Ueda , Naoko Takahashi , Kinya Nagasuna , Koji Miyake , Yasuhiro Fujita , Takumi Hatsuda
发明人： Katsuyuki Wada , Hiroko Ueda , Naoko Takahashi , Kinya Nagasuna , Koji Miyake , Yasuhiro Fujita , Takumi Hatsuda
CPC分类号： C08J3/245 , A61F13/53 , A61F2013/530715 , A61F2013/530729 , A61L15/60 , B01J20/26 , B01J20/261 , B01J20/264 , B01J20/265 , B01J20/267 , B01J20/30 , B01J2220/68 , C08F220/06 , C08F222/1006 , C08F222/385 , G01N5/025 , G01N2015/0866
摘要： The present invention provides: a water-absorbing agent which has excellent urine resistance; a water-absorbing agent which has not only excellent urine resistance, but also excellent absorption properties that are stable to any composition of urine and show little change with time; and production processes and uses for these water-absorbing agents. The present invention water-absorbing agent exhibits a specific or larger value of absorption capacity under a load in a process in which the absorption capacity under a load is measured in a new manner using a specific liquid to be absorbed, and the present invention provides an absorbent matter and an absorbent article which display a specific or larger value of new absorption index as is, for example, led from the absorption capacity under a load or from the resin concentration using the above water-absorbing agent. The present invention further provides a production process for a water-absorbing agent having the above specific parameter.
摘要翻译： 本发明提供一种耐尿性优异的吸水剂， 吸水剂不仅具有优异的耐尿性，而且具有优异的吸收性能，对于任何尿组合物都是稳定的，随时间变化不大; 以及这些吸水剂的生产方法和用途。 本发明的吸水剂在使用特定待吸收液体的新方式测定负荷下的吸收容量的工序中，在负荷下具有特定的或较大的吸收容量值，本发明提供一种 吸收性物质和吸收性物品，其具有特定或更大的新吸收指数值，例如由负载下的吸收能力或使用上述吸水剂的树脂浓度引起。 本发明还提供了具有上述特定参数的吸水剂的制造方法。
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公开(公告)号：US5140076A
公开(公告)日：1992-08-18
申请号：US502738
申请日：1990-04-02
申请人： Takumi Hatsuda , Kazumasa Kimura , Kinya Nagasuna , Akito Yano
发明人： Takumi Hatsuda , Kazumasa Kimura , Kinya Nagasuna , Akito Yano
IPC分类号： B01J20/26 , A61L15/60 , C08F2/16 , C08F8/14 , C08F8/30 , C08F8/32 , C08J3/00 , C08J3/12 , C08J3/24 , C08L101/00
CPC分类号： C08J3/12 , A61L15/60 , C08F8/14 , C08F8/30 , C08F8/32 , C08F2810/20 , C08J2300/14
摘要： A method of treating the surface of an absorbent resin, which comprises mixing (A) 100 parts by weight of an absorbent resin powder possessing a carboxyl group (B) 0.01 to 30 parts by weight of a cross-linking agent, (C) 0 to 50 parts by weight of water, and (D) 0 to 60 parts by weight of a hydrophilic organic solvent in a high-speed stirring type mixer provided with an inner surface formed substantially of a substrate (I) possessing a contact angle of not less than about 60.degree. with respect to water and a heat distortion point of not lower than about 70.degree. C. and completing reaction of said absorbent resin powder (A) with said cross-linking agent (B).
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公开(公告)号：US5164459A
公开(公告)日：1992-11-17
申请号：US502735
申请日：1990-04-02
申请人： Kazumasa Kimura , Takumi Hatsuda , Kinya Nagasuna
发明人： Kazumasa Kimura , Takumi Hatsuda , Kinya Nagasuna
CPC分类号： C08J3/12 , A61L15/60 , C08F8/14 , C08F2810/20 , C08J2300/14
摘要： A method for treating the surface of an absorbent resin which comprises mixing (I) 100 parts by weight of an absorbent resin powder having a carboxyl group, (II) 0.01 to 30 parts by weight of a polyhydric alcohol, (III) 0 to 50 parts by weight of water and (IV) 0 to 60 parts by weight of a hydrophilic organic solvent, and heat-treating at a temperature in the range of 90.degree. to 250.degree. C. to treat the surface of said absorbent resin powder (I) until the reaction of said absorbent resin powder (I) with said polyhydric alcohol (II) is completed, wherein the time for completion of the reaction is the time that satisfies the following equation (a-1):30.ltoreq.(100+C)B/A.ltoreq.80 (a-1)wherein A is absorption capacity of said absorbent resin powder (I) for physiological saline solution, B is the absorption capacity of the resultant treated absorbent resin for physiological saline solution, and C is parts by weight of said polyhydric alcohol (II) used per 100 parts by weight of said absorbent resin powder (I).
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公开(公告)号：US20050272600A1
公开(公告)日：2005-12-08
申请号：US11177725
申请日：2005-07-09
申请人： Katsuyuki Wada , Hiroko Ueda , Naoko Takahashi , Kinya Nagasuna , Koji Miyake , Yasuhiro Fujita , Takumi Hatsuda
发明人： Katsuyuki Wada , Hiroko Ueda , Naoko Takahashi , Kinya Nagasuna , Koji Miyake , Yasuhiro Fujita , Takumi Hatsuda
CPC分类号： C08J3/245 , A61F13/53 , A61F2013/530715 , A61F2013/530729 , A61L15/60 , B01J20/26 , B01J20/261 , B01J20/264 , B01J20/265 , B01J20/267 , B01J20/30 , B01J2220/68 , C08F220/06 , C08F222/1006 , C08F222/385 , G01N5/025 , G01N2015/0866
摘要： The present invention provides: a water-absorbing agent which has excellent urine resistance; a water-absorbing agent which has not only excellent urine resistance, but also excellent absorption properties that are stable to any composition of urine and show little change with time; and production processes and uses for these water-absorbing agents. The present invention water-absorbing agent exhibits a specific or larger value of absorption capacity under a load in a process in which the absorption capacity under a load is measured in a new manner using a specific liquid to be absorbed, and the present invention provides an absorbent matter and an absorbent article which display a specific or larger value of new absorption index as is, for example, led from the absorption capacity under a load or from the resin concentration using the above water-absorbing agent. The present invention further provides a production process for a water-absorbing agent having the above specific parameter.
摘要翻译： 本发明提供一种耐尿性优异的吸水剂， 吸水剂不仅具有优异的耐尿性，而且具有优异的吸收性能，对于任何尿组合物都是稳定的，随时间变化不大; 以及这些吸水剂的生产方法和用途。 本发明的吸水剂在使用特定待吸收液体的新方式测定负荷下的吸收容量的工序中，在负荷下具有特定的或较大的吸收容量值，本发明提供一种 吸收性物质和吸收性物品，其具有特定或更大的新吸收指数值，例如由负载下的吸收能力或使用上述吸水剂的树脂浓度引起。 本发明还提供了具有上述特定参数的吸水剂的制造方法。
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公开(公告)号：US06599989B2
公开(公告)日：2003-07-29
申请号：US09255433
申请日：1999-02-22
申请人： Katsuyuki Wada , Hiroko Ueda , Naoko Takahashi , Kinya Nagasuna , Koji Miyake , Yasuhiro Fujita , Takumi Hatsuda
发明人： Katsuyuki Wada , Hiroko Ueda , Naoko Takahashi , Kinya Nagasuna , Koji Miyake , Yasuhiro Fujita , Takumi Hatsuda
IPC分类号： C08J324
CPC分类号： C08J3/245 , A61F13/53 , A61F2013/530715 , A61F2013/530729 , A61L15/60 , B01J20/26 , B01J20/261 , B01J20/264 , B01J20/265 , B01J20/267 , B01J20/30 , B01J2220/68 , C08F220/06 , C08F222/1006 , C08F222/385 , G01N5/025 , G01N2015/0866
摘要： Water-absorbing agents containing polycarboxylic amine chelating agents. The water-absorbing agents are obtained by a process including the step of adding to a water-absorbent resin at least one chelating agent selected from the group consisting of polycarboxylic amines and maleic hydrophilic polymers. The polycarboxylic amine may be selected from a class that includes N-carboxymethyl-aspartic acid as one of its members or selected from a class that includes N,N′-bis(1,2-dicarboxyethyl)-ethylenediamine as one of its members. The water-absorbing agents have not only excellent urine resistance, but also excellent absorption properties that are stable to any composition of urine and show little change with time.
摘要翻译： 含有多羧酸胺螯合剂的吸水剂。 吸水剂通过包括向吸水性树脂中加入选自多元羧酸胺和马来酸亲水性聚合物中的至少一种螯合剂的方法获得。 多羧酸胺可以选自包括N-羧甲基 - 天冬氨酸作为其成员之一或选自包括N，N'-双（1,2-二羧基乙基） - 乙二胺作为其成员之一的类别。 吸水剂不仅具有优异的耐尿性，而且具有优异的吸收性能，对于任何尿组合物都是稳定的，随时间变化不大。
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公开(公告)号：US6103785A
公开(公告)日：2000-08-15
申请号：US275071
申请日：1999-03-23
申请人： Katsuhiro Kajikawa , Kinya Nagasuna
发明人： Katsuhiro Kajikawa , Kinya Nagasuna
CPC分类号： A61L15/60
摘要： The present invention provides: a water-absorbing agent which has high absorption capacity, fast absorption speed, and excellent liquid permeability; and a production process and a use for such a water-absorbing agent. A water-absorbent fine particle having a lower absorption capacity than a water-absorbent resin particle is fixed to the surface of the water-absorbent resin particle, or portions having a higher crosslinking density than internal portions are discontinuously present in the neighborhood of the surface of the water-absorbent resin particle. In addition, the water-absorbing agent is produced using a water-absorbent crosslinking agent which is swellable in itself.
摘要翻译： 本发明提供吸收剂吸收性高，吸收速度快，透液性优异的吸水剂。 以及这种吸水剂的制造方法和用途。 将具有比吸水性树脂颗粒吸收能力低的吸水性细颗粒固定在吸水性树脂颗粒的表面上，或者表面附近具有比内部部分高的交联密度的部分不连续地存在 的吸水性树脂颗粒。 此外，吸水剂是使用本身可溶胀的吸水性交联剂制造的。
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公开(公告)号：US5866678A
公开(公告)日：1999-02-02
申请号：US802284
申请日：1997-02-20
摘要： A method for the production of an absorbent resin having a very small residual monomer content either by adding to an absorbent resin powder a substance capable of reacting with the residual monomer in the absorbent resin powder thereby forming an absorbent resin composition having a water content in the range of 10 to 70% by weight and heat-treating the absorbent resin composition at a temperature in the range of 100.degree. to 200 .degree. C. while retaining the water content of the absorbent resin or by adding to an absorbent resin powder a substance capable of reacting with the residual monomer in the absorbent resin powder thereby forming an absorbent resin composition having a water content in the range of 25 to 55% by weight, heat-treating the absorbent resin composition at a temperature in the range of 120.degree. to 200 .degree. C. while retaining the water content of the absorbent resin composition in the range mentioned above, and then drying the absorbent resin composition at a temperature not exceeding 120.degree. C.
摘要翻译： 通过向吸收性树脂粉末中添加能够与吸收性树脂粉末中的残留单体反应的物质，从而形成吸水性树脂组合物，其具有非常小的残留单体含量的方法 范围为10〜70重量％，并且在100〜200℃的温度范围内对吸收性树脂组合物进行热处理，同时保持吸收性树脂的含水量，或者通过向吸收性树脂粉末中添加能够 与吸收性树脂粉末中的残留单体反应，从而形成水分为25〜55重量％的吸水性树脂组合物，在120〜200℃的温度范围内对吸收性树脂组合物进行热处理 同时将吸水性树脂组合物的水分保持在上述范围内，然后在n温度下干燥吸收性树脂组合物 超过120℃
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