公开(公告)号：US06187872B1

公开(公告)日：2001-02-13

申请号：US09051313

申请日：1998-04-06

申请人： Toru Yanase ,  Kazuki Kimura ,  Shin-ichi Fujino ,  Kinya Nagasuna ,  Kunihiko Ishizaki ,  Hirotama Fujimaru ,  Nobuyuki Harada

发明人： Toru Yanase ,  Kazuki Kimura ,  Shin-ichi Fujino ,  Kinya Nagasuna ,  Kunihiko Ishizaki ,  Hirotama Fujimaru ,  Nobuyuki Harada

IPC分类号： C08F812

CPC分类号： A61L15/60 ,  B01J20/26 ,  C08F8/00 ,  C08F8/44 ,  C08F2800/20 ,  C08F2810/20 ,  C08F220/06

摘要： A hydrogel polymer obtained by polymerizing a monomer component including acrylic acid (salt) is post-neutralized so that each of polymer particles derived from a polymer produced by neutralizing the hydrogel polymer has an allowable neutralization ratio. The polymer as obtained by neutralizing the hydrogel polymer is reacted with a crosslinking agent reactive to a functional group of the polymer. The allowable neutralization ratio, for example, is a neutralization ratio which is not lower, by not less than 20 mole percent, or more than, at least 55 mole percent, than an average neutralization ratio of a mass of the polymer particles, and the post-neutralization is carried out so that a number of polymer particles having a non-allowable neutralization ratio outside the allowable neutralization range is not more than 10 in 200 polymer particles, thus obtaining a water-absorbent agent having high absorbency under no applied pressure and high pressure wherein the amount of water soluble component is lower compared with the conventional water-absorbent agent and a change in pH of a swollen gel is small.

摘要翻译： 通过使包含丙烯酸（盐）的单体组分聚合而获得的水凝胶聚合物被后中和，使得通过中和水凝胶聚合物产生的聚合物衍生的各聚合物颗粒具有允许的中和比。 通过中和水凝胶聚合物获得的聚合物与与聚合物的官能团反应的交联剂反应。 例如，容许的中和比例是中和比，其比不到聚合物颗粒的质量的平均中和比不低于20摩尔％，或至多55摩尔％，而且 进行中和后，使得在200个聚合物粒子中，许多中和比例不超过允许中和比例的聚合物颗粒数不超过10个，从而获得在无施加压力下具有高吸收性的吸水剂， 其中水溶性成分的量与常规吸水剂相比较低，并且溶胀凝胶的pH变化很小。

公开(公告)号：US5422405A

公开(公告)日：1995-06-06

申请号：US167077

申请日：1993-12-15

申请人： Yorimichi Dairoku ,  Kinya Nagasuna ,  Kazutaka Yano ,  Toru Yanase ,  Yoshihiko Masuda

发明人： Yorimichi Dairoku ,  Kinya Nagasuna ,  Kazutaka Yano ,  Toru Yanase ,  Yoshihiko Masuda

IPC分类号： A61L15/60 ,  C08F8/00 ,  C08J3/24 ,  C08L33/00 ,  C08L33/02 ,  C08F8/14

CPC分类号： C08J3/243 ,  A61L15/60 ,  C08F8/00 ,  C08J2300/14

摘要： A method for the production of an absorbent resin retaining at a high level an absorption capacity without load, one of the basic physical properties of absorbent resin, and excelling in an absorption capacity under load is provided. The production is attained by mixing an absorbent resin as a base polymer possessing a carboxyl group with a first cross-linking agent possessing a solubility parameter (SP value) of not less than 12.5 (cal/cm.sup.3).sup.1/2 and exhibiting reactivity with the carboxyl group and a second cross-linking agent possessing a solubility parameter (SP value) of less than 12.5 (cal/cm.sup.3).sup.1/2 and exhibiting reactivity with the carboxyl group and then subjecting the resultant mixture to a heat treatment at a temperature not less than 160.degree. C.

摘要翻译： 提供一种吸收性树脂的制造方法，其在高负荷下保持无负载的吸收能力，吸收性树脂的基本物理性能之一，以及负载下的吸收容量优异。 通过将具有羧基的基础聚合物的吸收性树脂与具有不小于12.5（cal / cm 3）1/2的溶解度参数（SP值）的第一交联剂混合并显示出与 羧基和具有小于12.5（cal / cm 3）1/2的溶解度参数（SP值）的第二交联剂，并表现出与羧基的反应性，然后在不是的温度下对所得混合物进行热处理 小于160℃

公开(公告)号：US06207772B1

公开(公告)日：2001-03-27

申请号：US09620902

申请日：2000-07-20

申请人： Takumi Hatsuda ,  Toru Yanase ,  Yasuhiro Fujita ,  Kazuki Kimura

发明人： Takumi Hatsuda ,  Toru Yanase ,  Yasuhiro Fujita ,  Kazuki Kimura

IPC分类号： C08F2006

CPC分类号： C08F2/10

摘要： A method for producing a cross-linked polymer manifesting a high absorption capacity and having a small content of soluble component by a convenient and expeditious process with high productivity is provided. An absorbent resin such that disposable diapers and other products incorporating the absorbent resin manifest outstanding qualities and a method for the production of the absorbent resin are proposed. The cross-linked polymer according to this invention is produced by a method of polymerizing an aqueous polymerizable monomer solution containing a water-soluble ethylenically unsaturated monomer and a first cross-linking agent capable of forming a hydrogel polymer by polymerization, which method comprises the steps of performing the polymerization in a substantially static state from the time at which the polymerization is initiated till the time at which the whole polymerization system is gelated, subsequently giving the polymerization system a thorough shearing force thereby granulating the hydrogel polymer before the polymerization system has the temperature thereof elevated by the heat of polymerization to the highest level, and further continuing the polymerization.

公开(公告)号：US06194531B1

公开(公告)日：2001-02-27

申请号：US08867780

申请日：1997-06-03

申请人： Takumi Hatsuda ,  Toru Yanase ,  Yasuhiro Fujita ,  Kazuki Kimura

发明人： Takumi Hatsuda ,  Toru Yanase ,  Yasuhiro Fujita ,  Kazuki Kimura

IPC分类号： C08F2006

CPC分类号： C08F2/10

摘要： A method for producing a cross-linked polymer manifesting a high absorption capacity and having a small content of soluble component by a convenient and expeditious process with high productivity is provided. An absorbent resin such that disposable diapers and other products incorporating the absorbent resin manifest outstanding qualities and a method for the production of the absorbent resin are proposed. The cross-linked polymer according to this invention is produced by a method of polymerizing an aqueous polymerizable monomer solution containing a water-soluble ethylenically unsaturated monomer and a first cross-linking agent capable of forming a hydrogel polymer by polymerization, which method comprises the steps of performing the polymerization in a substantially static state from the time at which the polymerization is initiated till the time at which the whole polymerization system is gelated, subsequently giving the polymerization system a thorough shearing force thereby granulating the hydrogel polymer before the polymerization system has the temperature thereof elevated by the heat of polymerization to the highest level, and further continuing the polymerization.

摘要翻译： 提供了一种通过方便快捷的方法生产具有高吸收能力并且具有小可溶性成分含量的交联聚合物的方法。 提出了一种吸收性树脂，使得一次性尿布和其它引入吸收性树脂的产品具有突出的品质，并且提出了制造吸收性树脂的方法。 根据本发明的交联聚合物通过聚合包含水溶性烯属不饱和单体的水性可聚合单体溶液和能够通过聚合形成水凝胶聚合物的第一交联剂的方法制备，该方法包括步骤 从聚合开始的时间到整个聚合体系凝胶化的时间以基本上静态的方式进行聚合，随后给聚合体系带来彻底的剪切力，从而在聚合体系具有聚合体系之前造粒水凝胶聚合物 其聚合温度升高到最高水平，进一步继续聚合。

公开(公告)号：US06187902B1

公开(公告)日：2001-02-13

申请号：US09208820

申请日：1998-12-09

申请人： Toru Yanase ,  Koji Miyake ,  Takumi Hatsuda ,  Akito Yano

发明人： Toru Yanase ,  Koji Miyake ,  Takumi Hatsuda ,  Akito Yano

IPC分类号： C08J300

CPC分类号： C08J3/12 ,  C08F6/008 ,  C08J2300/14

摘要： The present invention provides a production process, in which hydrophilic crosslinked polymers can be dried uniformly with good efficiency, and the deterioration during the drying is little. The production process of a hydrophilic crosslinked polymer comprises the steps of polymerizing an aqueous solution including a hydrophilic monomer and a crosslinking agent to obtain a hydrogel crosslinked polymer, and drying the hydrogel crosslinked polymer, thus obtaining the hydrophilic crosslinked polymer, and is characterized in that: the hydrogel crosslinked polymer is dried in a static state until it becomes possible to disintegrate an aggregate of the hydrogel crosslinked polymer; the dried hydrogel crosslinked polymer is disintegrated into a particle size of 20 mm or less; and the disintegrated hydrogel crosslinked polymer is dried in a stirred state and/or a fluidized state.

摘要翻译： 本发明提供了亲水性交联聚合物能够以高效率均匀干燥的方法，干燥过程中的劣化很小。 亲水性交联聚合物的制造方法包括使包含亲水性单体和交联剂的水溶液聚合，得到水凝胶交联聚合物，干燥水凝胶交联聚合物，得到亲水性交联聚合物，其特征在于， ：水凝胶交联聚合物在静止状态下干燥直到可能使水凝胶交联聚合物的聚集体分解; 将干燥的水凝胶交联聚合物分解成20μm以下的粒径; 并且分解的水凝胶交联聚合物在搅拌状态和/或流化状态下干燥。

公开(公告)号：US06291636B1

公开(公告)日：2001-09-18

申请号：US09285877

申请日：1999-04-07

申请人： Koji Miyake ,  Toru Yanase ,  Yoshifumi Adachi ,  Takumi Hatsuda

发明人： Koji Miyake ,  Toru Yanase ,  Yoshifumi Adachi ,  Takumi Hatsuda

IPC分类号： C08F600

CPC分类号： C08F6/008 ,  A61L15/225 ,  A61L15/60 ,  B01J20/26 ,  B01J20/30 ,  C08J3/12 ,  C08J3/122 ,  C08J2300/14

摘要： A manufacturing method of absorbent resin of the present invention includes, in addition to a drying step of drying hydrogel of a crosslinked polymer to obtain a dried product and a pulverizing step of pulverizing the dried product, a separating step of separating a incompletely dried product contained in the dried product therefrom. Since particles of the incompletely dried product are larger than those of the dried product, the former can be readily separated from the latter in the separating step by classifying the dried product to particles of a particle size within a predetermined range. Consequently, the incompletely dried product is never delivered to the pulverizing step, and therefore, it has become possible to prevent inconveniences, such as causing a trouble in pulverizing the dried product, and the incompletely dried product being mixed into the absorbent resin. Hence, in drying and subsequently pulverizing the hydrogel of a crosslinked polymer, that is, in manufacturing the absorbent resin, it has become possible to provide a method capable of manufacturing absorbent resin efficiently while avoiding troubles caused by the production of the incompletely dried product during the drying step.

摘要翻译： 本发明的吸收性树脂的制造方法除了干燥交联聚合物的水凝胶的干燥工序之外，还包括干燥产物粉碎的粉碎工序，分离含有不完全干燥物的分离步骤 在其干燥产物中。 由于不完全干燥的产品的颗粒大于干燥产品的颗粒，所以通过将干燥产物分类成预定范围内的颗粒尺寸，在分离步骤中可以容易地将前者与后者分离。 因此，不完全干燥的产品不会被输送到粉碎步骤，因此可以防止将干燥产物粉碎的问题和未完全干燥的产品混入吸收性树脂中的不便之处。 因此，在干燥并随后粉碎交联聚合物的水凝胶时，即在制造吸收性树脂时，可以提供一种能够有效地制造吸收性树脂的方法，同时避免由于不完全干燥的产品的产生引起的麻烦 干燥步骤。