公开(公告)号：US5624967A

公开(公告)日：1997-04-29

申请号：US473517

申请日：1995-06-07

申请人： Kazuhisa Hitomi ,  Takumi Hatsuda ,  Tadao Shimomura

发明人： Kazuhisa Hitomi ,  Takumi Hatsuda ,  Tadao Shimomura

IPC分类号： A61L15/24 ,  C08F220/04 ,  C08J9/28

CPC分类号： C08F220/04 ,  A61L15/24

摘要： A process for producing a water-absorbing resin, which comprises polymerizing (D) an aqueous solution comprising (A) at least one monomer component selected from the group consisting of an unsaturated carboxylic acid and salts thereof; (B) a compound having two or more unsaturated groups in a molecule; and (C) a compound having two or more functional groups which are capable of reacting with carboxyl groups in a molecule, the polymerization being conducted in such a manner that the following conditions (a) to (c) are simultaneously satisfied: (a) the molar ratio (B)/(C) being in the range of from 2.times.10.sup.-3 to 300, (b) the polymerization being initiated by a redox polymerization initiator, and (c) the maximum reaction temperature being in the range of from 60.degree. to 100.degree. C, and a water-absorbing resin having a degree of reduction in absorption magnification of from 1 to 16, and n absorption magnification under pressure of from 20 to 40.

摘要翻译： 一种吸水树脂的制造方法，其特征在于，聚合（D）含有（A）至少一种选自不饱和羧酸及其盐的单体成分的水溶液的水溶液; （B）分子中具有两个以上不饱和基团的化合物; 和（C）具有两个或更多个能够与分子中的羧基反应的官能团的化合物，聚合反应以同时满足以下条件（a）至（c）的方式进行：（a） （B）/（C）的摩尔比在2×10-3至300的范围内，（b）聚合由氧化还原聚合引发剂引发，和（c）最大反应温度在60 DEG至100℃，吸水倍率缩小程度为1〜16，吸收倍率为20〜40的吸水性树脂。

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。

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.

公开(公告)号：US06228930B1

公开(公告)日：2001-05-08

申请号：US09093476

申请日：1998-06-10

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： C08J302

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。

公开(公告)号：US07312278B2

公开(公告)日：2007-12-25

申请号：US10333614

申请日：2002-06-07

申请人： Yasuhisa Nakashima ,  Hiroyuki Ikeuchi ,  Yasuhiro Fujita ,  Makoto Nagasawa ,  Shigeru Sakamoto ,  Yorimichi Dairoku ,  Katsuyuki Wada ,  Shinichi Fujino ,  Toshimasa Kitayama ,  Kazuhisa Hitomi

发明人： Yasuhisa Nakashima ,  Hiroyuki Ikeuchi ,  Yasuhiro Fujita ,  Makoto Nagasawa ,  Shigeru Sakamoto ,  Yorimichi Dairoku ,  Katsuyuki Wada ,  Shinichi Fujino ,  Toshimasa Kitayama ,  Kazuhisa Hitomi

IPC分类号： C08L33/02 ,  C08L63/00

CPC分类号： A61L15/60

摘要： There is provided: a production process for a water-absorbing agent having stable properties in a short time; and a water-absorbing agent. The production process comprises the step of blending an acid-group-containing water-absorbent resin powder with a noncrosslinkable water-soluble inorganic base and/or an irreducible alkaline-metal-salt pH buffer and further with a dehydratable crosslinking agent reactable with the acid group, thereby subjecting the resin powder to crosslinking treatment, or comprises the step of blending an acid-group-containing water-absorbent resin powder with the above base and/or pH buffer and further with a crosslinking agent reactable with the acid group, thereby subjecting the resin powder to crosslinking treatment, wherein the resin powder has a weight-average particle diameter of 300 to 600 μm wherein the ratio of fine powders having particle diameters of not larger than 150 μm in the resin powder is not more than 10 weight %.

摘要翻译： 提供了一种在短时间内具有稳定性能的吸水剂的生产方法; 和吸水剂。 生产方法包括将含酸基的吸水性树脂粉末与不可交联的水溶性无机碱和/或不可还原的碱金属盐pH缓冲剂以及可与酸反应的可脱水交联剂 从而使树脂粉末进行交联处理，或者包括将含酸基的吸水性树脂粉末与上述碱和/或pH缓冲剂以及与酸基反应的交联剂进一步混合的步骤，由此 使树脂粉末进行交联处理，其中树脂粉末的重均粒径为300〜600μm，其中树脂粉末中粒径不大于150μm的细粉末的比率不大于10重量％ 。

公开(公告)号：US06372852B2

公开(公告)日：2002-04-16

申请号：US09273668

申请日：1999-03-23

申请人： Kazuhisa Hitomi ,  Yuji Yamamoto ,  Shigenori Kirimura ,  Nobuyuki Harada

发明人： Kazuhisa Hitomi ,  Yuji Yamamoto ,  Shigenori Kirimura ,  Nobuyuki Harada

IPC分类号： C08F26106

CPC分类号： C08F265/06 ,  C08F265/02

摘要： The present invention has an object to provide a process for producing a water-absorbing agent which is excellent in the absorption capacities under no load and under a load with good balance and can display excellent absorption properties even if the weight percentage of a water-absorbent resin (resin concentration) is high when the water-absorbent resin is used for materials such as sanitary materials. The above object can be achieved by adding a vinyl compound or both the vinyl compound and a polyhydric alcohol to a water-absorbent resin and heating the resultant mixture.

摘要翻译： 本发明的目的是提供一种制造吸水剂的方法，该吸水剂在无负载和负载下的吸收容量优异且平衡良好，并且即使吸水性的重量百分比也能显示出优异的吸收性 当吸水性树脂用于诸如卫生材料的材料时，树脂（树脂浓度）高。 上述目的可以通过将乙烯基化合物或乙烯基化合物和多元醇两者加入到吸水树脂中并加热所得混合物来实现。

公开(公告)号：US5792855A

公开(公告)日：1998-08-11

申请号：US788201

申请日：1997-01-24

申请人： Koichi Yonemura ,  Kazuhisa Hitomi ,  Akiko Mitsuhashi ,  Takaya Hayashi ,  Nobuyuki Harada

发明人： Koichi Yonemura ,  Kazuhisa Hitomi ,  Akiko Mitsuhashi ,  Takaya Hayashi ,  Nobuyuki Harada

IPC分类号： C08B11/12 ,  A61F13/15 ,  A61F13/49 ,  A61F13/53 ,  A61L15/22 ,  A61L15/28 ,  A61L15/60 ,  C08B15/00 ,  C08B31/00 ,  C08J3/24 ,  C08L101/16 ,  C08B16/00

CPC分类号： C08B31/006 ,  A61L15/225 ,  A61L15/28 ,  A61L15/60 ,  C08B15/005

摘要： Water-absorbent resins which are prepared by mixing polysaccharides with amino acids (amino acids and/or polymers of amino acids) and heating the mixture so as to cause a crosslinking reaction therein. Each of the water-absorbent resins has a water-absorbing ratio of not less than 10 g/g with respect to physiologic saline as well as having a rate of biodegradability of not less than 10%. Moreover, its water-absorbing ratio under pressure is not less than 10 ml/g with respect to physiologic saline. The water-absorbing ratio under pressure is measured by using a measuring device that is constituted of a weighing machine, a container, an air-intake pipe, a conduit, a glass filter, and a measuring section. The water-absorbent resins are superior in both water-absorbing capacity and biodegradability, and are capable of maintain their water-absorbing capacity even under pressure.

摘要翻译： 通过将多糖与氨基酸（氨基酸和/或氨基酸的聚合物）混合并加热混合物以在其中引起交联反应制备的吸水性树脂。 各吸水性树脂的吸水率相对于生理盐水为10g / g以上，生物降解率为10％以上。 另外，压力下的吸水率相对于生理盐水不低于10ml / g。 通过使用由称重机，容器，进气管，导管，玻璃过滤器和测量部构成的测量装置来测量压力下的吸水率。 吸水性树脂的吸水能力和生物降解性均优异，并且即使在压力下也能够保持其吸水能力。

公开(公告)号：US06881792B2

公开(公告)日：2005-04-19

申请号：US10689075

申请日：2003-10-21

申请人： Nobuyuki Harada ,  Shigeru Sakamoto ,  Yoshifumi Adachi ,  Kazuhisa Hitomi ,  Kazushi Torii ,  Toshimasa Kitayama

发明人： Nobuyuki Harada ,  Shigeru Sakamoto ,  Yoshifumi Adachi ,  Kazuhisa Hitomi ,  Kazushi Torii ,  Toshimasa Kitayama

IPC分类号： A61L15/22 ,  C08J3/12 ,  C08J3/24 ,  C08F8/00

CPC分类号： C08J3/245 ,  C08J3/12 ,  C08J3/122 ,  C08J2300/14 ,  Y10T428/2982

摘要： The present invention provides: a production process for a basic water-absorbent resin to be a main component of a water-absorbing agent which exhibits an excellent water absorption capacity under a load with high productivity; a production process for a water-absorbing agent; and use thereof. The production process for an irregular shape basic water-absorbent resin comprises the step of reacting a basic resin and a crosslinking agent in order to obtain the basic water-absorbent resin, with the process forwarding a crosslinking reaction and pulverizing the resultant product at the same time. The first production process for a water-absorbing agent comprises the step of blending an acidic water-absorbent resin with the basic water-absorbent resin obtained by the above-mentioned process. The second production process for a water-absorbing agent comprises the step of obtaining a mixture of an acidic water-absorbent resin and the basic water-absorbent resin by coexisting with the acidic water-absorbent resin when carrying out the crosslinking reaction and the pulverization in the above-mentioned process.

摘要翻译： 本发明提供：作为吸水剂的主要成分的碱性吸水性树脂的制造方法，其在高生产率的负载下表现出优异的吸水能力; 吸水剂的生产方法; 及其用途。 不规则形状的基本吸水性树脂的制造方法包括使碱性树脂和交联剂反应以获得碱性吸水性树脂的步骤，其中进行交联反应并将所得产物在相同的条件下粉碎 时间。 吸水剂的第一种制备方法包括将酸性吸水性树脂与通过上述方法获得的碱性吸水性树脂混合的步骤。 吸水剂的第二制造方法包括以下步骤：当进行交联反应和粉碎时，通过与酸性吸水性树脂共存获得酸性吸水性树脂和碱性吸水性树脂的混合物 上述过程。

公开(公告)号：US06254990B1

公开(公告)日：2001-07-03

申请号：US09250477

申请日：1999-02-14

申请人： Kunihiko Ishizaki ,  Teruyuki Kanto ,  Shigeru Sakamoto ,  Nobuyuki Harada ,  Kazuhisa Hitomi

发明人： Kunihiko Ishizaki ,  Teruyuki Kanto ,  Shigeru Sakamoto ,  Nobuyuki Harada ,  Kazuhisa Hitomi

IPC分类号： C08F814

CPC分类号： C08J3/245 ,  C08J3/12 ,  C08J2300/14 ,  Y10T428/2982

摘要： The present invention provides a surface-crosslinking process of a water-absorbent resin to obtain a water-absorbing agent which has high absorption speed and excellent absorption capacity under a load (a water-absorbent resin which has specific or larger values of properties). In a process comprising the step of adding a crosslinking agent to a dry water-absorbent resin powder to thereby crosslink the neighborhood of its surface, the surface-crosslinking is carried out while the resin powder having a weight-average particle diameter of 200 to 1,000 &mgr;m is pulverized.

摘要翻译： 本发明提供一种吸水性树脂的表面交联方法，以获得在负荷下具有高吸收速度和优异吸收能力的吸水剂（具有特定或更大特性值的吸水性树脂）。 在包括向干吸水性树脂粉末中添加交联剂从而交联其表面附近的步骤的过程中，进行表面交联，同时重均粒径为200〜1000的树脂粉末 妈妈被粉碎。