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1. 发明授权

US10294315B2 Polyacrylic acid (salt)-based water absorbent resin and method for producing same 有权
公开(公告)号：US10294315B2
公开(公告)日：2019-05-21
申请号：US13499037
申请日：2010-09-30
申请人： Satoshi Matsumoto , Kunihiko Ishizaki , Kazushi Torii , Shin-ichi Fujino , Kazuhiko Sakamoto
发明人： Satoshi Matsumoto , Kunihiko Ishizaki , Kazushi Torii , Shin-ichi Fujino , Kazuhiko Sakamoto
IPC分类号： C08F20/00 , C08F20/06 , C08J3/24
摘要： A method for producing a polyacrylic acid (salt)-based water absorbent resin, sequentially including the steps of: storing or producing acrylic acid; mixing acrylic acid containing a polymerization inhibitor with water, a crosslinking agent, and optionally, a basic composition, and/or neutralizing them, to prepare an aqueous monomer solution; polymerizing the aqueous monomer solution; drying an obtained water-containing gel-like crosslinked polymer; and optionally carrying out surface crosslinking, wherein the acrylic acid containing the polymerization inhibitor has a water content of not higher than 1,000 ppm (by mass; the same applies hereinafter), and/or the aqueous monomer solution has a formic acid content of 1 to 700 ppm, relative to the monomer.

2. 发明申请

US20120189861A1 POLYACRYLIC ACID (SALT)-BASED WATER ABSORBENT RESIN AND METHOD FOR PRODUCING SAME 审中-公开
标题翻译：聚氨酯酸（盐） - 水吸收树脂及其生产方法
公开(公告)号：US20120189861A1
公开(公告)日：2012-07-26
申请号：US13499037
申请日：2010-09-30
申请人： Satoshi Matsumoto , Kunihiko Ishizaki , Kazushi Torii , Shin-ichi Fujino , Kazuhiko Sakamoto
发明人： Satoshi Matsumoto , Kunihiko Ishizaki , Kazushi Torii , Shin-ichi Fujino , Kazuhiko Sakamoto
IPC分类号： B32B27/08 , C07C57/04 , C08L33/02
CPC分类号： C08F20/06 , B01J2219/00006 , C08J3/245 , C08J2333/02 , Y10T428/31859
摘要： A method for producing a polyacrylic acid (salt)-based water absorbent resin, sequentially including the steps of: storing or producing acrylic acid; mixing acrylic acid containing a polymerization inhibitor with water, a crosslinking agent, and optionally, a basic composition, and/or neutralizing them, to prepare an aqueous monomer solution; polymerizing the aqueous monomer solution; drying an obtained water-containing gel-like crosslinked polymer; and optionally carrying out surface crosslinking, wherein the acrylic acid containing the polymerization inhibitor has a water content of not higher than 1,000 ppm (by mass; the same applies hereinafter), and/or the aqueous monomer solution has a formic acid content of 1 to 700 ppm, relative to the monomer.
摘要翻译：一种聚丙烯酸（盐）系吸水性树脂的制造方法，其顺序包括以下步骤：储存或制造丙烯酸; 将含有聚合抑制剂的丙烯酸与水混合，交联剂和任选的碱性组合物，和/或中和它们以制备单体水溶液; 聚合单体水溶液; 干燥得到的含水凝胶状交联聚合物; 并且可选地进行表面交联，其中含有聚合抑制剂的丙烯酸的含水量不高于1000ppm（以质量计），和/或单体水溶液的甲酸含量为1〜 700ppm，相对于单体。

3. 发明授权

US5475062A Method for surface treatment of absorbent resin 失效
标题翻译：吸水树脂表面处理方法
公开(公告)号：US5475062A
公开(公告)日：1995-12-12
申请号：US186560
申请日：1994-01-26
申请人： Kunihiko Ishizaki , Shin-ichi Fujino , Kinya Nagasuna , Yoshiniko Masuda
发明人： Kunihiko Ishizaki , Shin-ichi Fujino , Kinya Nagasuna , Yoshiniko Masuda
IPC分类号： C08J7/00 , A61L15/20 , A61L15/60 , B01J20/32 , C08F8/14 , C08J3/12 , C08J3/24
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。

4. 发明申请

US20100062252A1 Water absorbing agent, water absorbing article and method for production of water absorbing agent 有权
标题翻译：吸水剂，吸水剂及吸水剂的制造方法
公开(公告)号：US20100062252A1
公开(公告)日：2010-03-11
申请号：US11816200
申请日：2006-02-10
申请人： Kazuki Kimura , Shin-ichi Fujino , Katsuyuki Wada , Kunihiko Ishizaki
发明人： Kazuki Kimura , Shin-ichi Fujino , Katsuyuki Wada , Kunihiko Ishizaki
IPC分类号： C08F120/06 , C08F8/34 , B32B5/16
CPC分类号： A61L15/60 , B01J20/26 , B01J20/264 , B01J20/267 , B01J20/28004 , B01J20/2803 , B01J20/28047 , B01J20/30 , B01J20/3028 , B01J2220/68 , C08J3/245 , C08J2300/14 , Y10T428/2982 , Y10T428/2991 , Y10T428/2998
摘要： An object of the present invention is to provide a water absorbing agent having a low amount of residual monomer, small variance of the amount of residual monomer among ranges of particle size distribution and favorable absorption properties, and being sanitary; an absorbing article; and a method for the production of a water absorbing agent. The water absorbing agent of the present invention has the amount of residual monomer of not higher than 500 ppm, and a residual monomer index of not greater than 0.30. The method for the production includes a first step of obtaining a hydrogel polymer by polymerizing an aqueous solution of a monomer including an unsaturated carboxylic acid and/or a salt thereof in the presence of a crosslinking agent; a second step of obtaining a water absorbent resin precursor which is in powder form and includes particles having a particle size of 300 to 850 μm and particles having a particle size of smaller than 300 μm as main components by drying said hydrogel polymer followed by pulverization and classification to adjust the particle size distribution, a third step of obtaining a water absorbent resin by heating a mixture of said water absorbent resin precursor and a surface crosslinking agent, which can form an ester bond around the surface of said water absorbent resin precursor, a fourth step of adding by spraying an aqueous solution that includes a sulfur-containing reducing agent to said water absorbent resin, and a fifth step of subjecting the mixture of the water absorbent resin and said aqueous solution to a heat treatment under an airflow of not lower than 40° C. but not higher than 120° C.
摘要翻译：本发明的目的是提供一种具有少量残留单体的吸水剂，在粒度分布范围和吸收性能良好之间的残留单体量的变化小，并且是卫生的; 吸收物品和吸水剂的制造方法。本发明的吸水剂的残留单体量不高于500ppm，残留单体指数不大于0.30。制造方法包括在交联剂的存在下，通过使包含不饱和羧酸和/或其盐的单体的水溶液聚合而获得水凝胶聚合物的第一步骤; 第二步是通过干燥所述水凝胶聚合物，然后粉碎，得到粉末形式的吸水性树脂前体，并且包括粒度为300〜850μm的粒子和粒径小于300μm的粒子作为主要成分，分级调整粒度分布，第三步骤是通过加热吸水性树脂前体和表面交联剂的混合物来获得吸水性树脂，该混合物可以在吸水性树脂前体的表面周围形成酯键，第五步骤是通过将含有硫的还原剂的水溶液喷雾到所述吸水性树脂中而进行添加，第五步是在吸水性树脂和所述水溶液的混合物在不低于超过40℃但不高于120℃

5. 发明授权

US08182916B2 Particulate water absorbing agent comprising crosslinked absorbent resin and having low residual monomer, water absorbing article and method for production of water absorbing agent 有权
标题翻译：含有交联吸水树脂并具有低残留单体，吸水性物品和吸水剂生产方法的颗粒状吸水剂
公开(公告)号：US08182916B2
公开(公告)日：2012-05-22
申请号：US11816200
申请日：2006-02-10
申请人： Kazuki Kimura , Shin-ichi Fujino , Katsuyuki Wada , Kunihiko Ishizaki
发明人： Kazuki Kimura , Shin-ichi Fujino , Katsuyuki Wada , Kunihiko Ishizaki
IPC分类号： B32B5/16 , C08F2/10 , C08F8/34 , C08J3/24
CPC分类号： A61L15/60 , B01J20/26 , B01J20/264 , B01J20/267 , B01J20/28004 , B01J20/2803 , B01J20/28047 , B01J20/30 , B01J20/3028 , B01J2220/68 , C08J3/245 , C08J2300/14 , Y10T428/2982 , Y10T428/2991 , Y10T428/2998
摘要： An object of the present invention is to provide a water absorbing agent having a low amount of residual monomer, small variance of the amount of residual monomer among ranges of particle size distribution and favorable absorption properties, and being sanitary; an absorbing article; and a method for the production of a water absorbing agent. The water absorbing agent of the present invention has the amount of residual monomer of not higher than 500 ppm, and a residual monomer index of not greater than 0.30. The method for the production includes a first step of obtaining a hydrogel polymer by polymerizing an aqueous solution of a monomer including an unsaturated carboxylic acid and/or a salt thereof in the presence of a crosslinking agent; a second step of obtaining a water absorbent resin precursor which is in powder form and includes particles having a particle size of 300 to 850 μm and particles having a particle size of smaller than 300 μm as main components by drying said hydrogel polymer followed by pulverization and classification to adjust the particle size distribution, a third step of obtaining a water absorbent resin by heating a mixture of said water absorbent resin precursor and a surface crosslinking agent, which can form an ester bond around the surface of said water absorbent resin precursor, a fourth step of adding by spraying an aqueous solution that includes a sulfur-containing reducing agent to said water absorbent resin, and a fifth step of subjecting the mixture of the water absorbent resin and said aqueous solution to a heat treatment under an airflow of not lower than 40° C. but not higher than 120° C.
摘要翻译：本发明的目的是提供一种具有少量残留单体的吸水剂，在粒度分布范围和吸收性能良好之间的残留单体量的变化小，并且是卫生的; 吸收物品和吸水剂的制造方法。本发明的吸水剂的残留单体量不高于500ppm，残留单体指数不大于0.30。制造方法包括在交联剂的存在下，通过使包含不饱和羧酸和/或其盐的单体的水溶液聚合而获得水凝胶聚合物的第一步骤; 第二步是通过干燥所述水凝胶聚合物，然后粉碎，得到粉末形式的吸水性树脂前体，并且包括粒度为300〜850μm的粒子和粒径小于300μm的粒子作为主要成分，分级调整粒度分布，第三步骤是通过加热吸水性树脂前体和表面交联剂的混合物来获得吸水性树脂，该混合物可以在吸水性树脂前体的表面周围形成酯键，第五步骤是通过将含有硫的还原剂的水溶液喷雾到所述吸水性树脂中而进行添加，第五步是在吸水性树脂和所述水溶液的混合物在不低于超过40℃但不高于120℃

6. 发明授权

US06187872B1 Water-absorbent agent and method for manufacturing the same 失效
标题翻译：吸水剂及其制造方法
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。

7. 发明授权

US5760080A Absorbing agent, process of manufacturing same, and absorbent product containing same 失效
标题翻译：吸收剂，其制造方法以及含有该吸收剂的吸收剂
公开(公告)号：US5760080A
公开(公告)日：1998-06-02
申请号：US571960
申请日：1995-12-28
申请人： Katsuyuki Wada , Kinya Nagasuna , Shin-ichi Fujino , Yoshihiko Masuda
发明人： Katsuyuki Wada , Kinya Nagasuna , Shin-ichi Fujino , Yoshihiko Masuda
IPC分类号： A61F13/15 , A61L15/60 , C08F220/00 , C08F220/06 , C08F8/32 , C08F8/14
CPC分类号： A61F13/53 , A61F13/15203 , A61L15/60 , C08F220/00 , C08F220/06
摘要： An absorbing agent has a diffusing absorbency under pressure of not less than 25 g/g when 60 minutes elapsed after absorption is started, and a water-soluble content is above 0 percent by weight and not more than 7 percent by weight. The absorbing agent is prepared by surface-crosslinking a precursor of the absorbing agent obtained by performing an aqueous solution polymerization of a hydrophilic unsaturated monomer having not less than 50 mole percent neutralized acrylic acid as a main component using a specific crosslinking agent having a main component composed of an ester compound of a specific polyhydroxy alcohol and an unsaturated carboxylic acid, and a high-boiling component having at least two alcohol structures in a molecule as a specific ratio. As a result, an absorbing agent having excellent properties such as the diffusing absorbency under pressure is high, the water soluble content is small, and the amount of wet back of the aqueous liquid after a long period of time is small, water absorbency under pressure can be stably maintained for a long period of time can be achieved.
摘要翻译： PCT No.PCT / JP95 / 01150 Sec。 371日期1995年12月28日第 102（e）1995年12月28日PCT PCT 1995年6月9日PCT公布。第WO95 / 34377号公报日期1995年12月21日吸收剂在吸收开始60分钟后具有不低于25g / g的压力下的扩散吸收性，并且水溶性成分高于0重量％且不大于7重量％重量。吸收剂是通过使用具有主成分的特定交联剂进行以不少于50摩尔％中和的丙烯酸为主成分的亲水性不饱和单体的水溶液聚合而获得的吸收剂的前体进行表面交联而制备的。由特定的多羟基醇和不饱和羧酸的酯化合物和分子中具有至少两个醇结构的高沸点组分作为特定比例组成。结果，具有优异性能的吸收剂如压力下的扩散吸收性高，水溶性量小，长时间后的水性液体的湿润量少，压力下的吸水性可以长期稳定地维持可以实现。

8. 发明授权

US07851550B2 Method for surface crosslinking water-absorbing resin and method for manufacturing water-absorbing resin 有权
标题翻译：表面交联吸水树脂的方法和吸水树脂的制造方法
公开(公告)号：US07851550B2
公开(公告)日：2010-12-14
申请号：US11641885
申请日：2006-12-20
申请人： Kenji Kadonaga , Yorimichi Dairoku , Shin-ichi Fujino , Hiroko Okochi , Yoshio Irie , Hideyuki Tahara
发明人： Kenji Kadonaga , Yorimichi Dairoku , Shin-ichi Fujino , Hiroko Okochi , Yoshio Irie , Hideyuki Tahara
IPC分类号： C08F8/00 , C08F20/04
CPC分类号： B01J8/10 , B01F7/0045 , B01F7/00466 , B01F7/10 , B01J2208/00212 , B01J2208/00867 , B01J2219/182 , C08J3/245 , Y10S524/916
摘要： A method for surface crosslinking water-absorbing resin of the present invention includes a step (1) of obtaining a wet mixture, a step (2) of obtaining a dried particulate composition, and a step (3) of carrying out a surface crosslinking reaction. With this, since a processing time of each step becomes short, it is possible to mass produce the water-absorbing resin having excellent physical properties. Moreover, a method for manufacturing the water-absorbing resin of the present invention includes a modifying step and a cooling step. The modifying step and/or the cooling step are/is carried out by using stirring means including a rotation axis having a plurality of stirring boards, and the stirring means includes the stirring board having a specific thickness and/or a scraping blade having a specific shape. With this, it is possible to suppress the generation of the fine powder in the modifying step and/or the cooling step.
摘要翻译：本发明的表面交联吸水性树脂的方法包括获得湿混合物的步骤（1），获得干燥的颗粒组合物的步骤（2）和进行表面交联反应的步骤（3）。由此，由于每个步骤的处理时间变短，因此可以大量生产具有优异物理性能的吸水性树脂。此外，本发明的吸水性树脂的制造方法包括改性工序和冷却工序。通过使用包括具有多个搅拌板的旋转轴的搅拌装置进行修改步骤和/或冷却步骤，并且搅拌装置包括具有特定厚度的搅拌板和/或具有特定厚度的刮板形状。由此，可以抑制修饰工序和/或冷却工序中的细粉的产生。

9. 发明申请

US20070149760A1 Method for surface crosslinking water-absorbing resin and method for manufacturing water-absorbing resin 有权
标题翻译：表面交联吸水树脂的方法和吸水树脂的制造方法
公开(公告)号：US20070149760A1
公开(公告)日：2007-06-28
申请号：US11641885
申请日：2006-12-20
申请人： Kenji Kadonaga , Yorimichi Dairoku , Shin-ichi Fujino , Hiroko Okochi , Yoshio Irie , Hideyuki Tahara
发明人： Kenji Kadonaga , Yorimichi Dairoku , Shin-ichi Fujino , Hiroko Okochi , Yoshio Irie , Hideyuki Tahara
IPC分类号： C08F6/00
CPC分类号： B01J8/10 , B01F7/0045 , B01F7/00466 , B01F7/10 , B01J2208/00212 , B01J2208/00867 , B01J2219/182 , C08J3/245 , Y10S524/916
摘要： A method for surface crosslinking water-absorbing resin of the present invention includes a step (1) of obtaining a wet mixture, a step (2) of obtaining a dried particulate composition, and a step (3) of carrying out a surface crosslinking reaction. With this, since a processing time of each step becomes short, it is possible to mass produce the water-absorbing resin having excellent physical properties. Moreover, a method for manufacturing the water-absorbing resin of the present invention includes a modifying step and a cooling step. The modifying step and/or the cooling step are/is carried out by using stirring means including a rotation axis having a plurality of stirring boards, and the stirring means includes the stirring board having a specific thickness and/or a scraping blade having a specific shape. With this, it is possible to suppress the generation of the fine powder in the modifying step and/or the cooling step.
摘要翻译：本发明的表面交联吸水性树脂的方法包括获得湿混合物的步骤（1），获得干燥的颗粒组合物的步骤（2）和进行表面交联反应的步骤（3）。由此，由于每个步骤的处理时间变短，因此可以大量生产具有优异物理性能的吸水性树脂。此外，本发明的吸水性树脂的制造方法包括改性工序和冷却工序。通过使用包括具有多个搅拌板的旋转轴的搅拌装置进行修改步骤和/或冷却步骤，并且搅拌装置包括具有特定厚度的搅拌板和/或具有特定厚度的刮板形状。由此，可以抑制修饰工序和/或冷却工序中的细粉的产生。

10. 发明申请

US20070149701A1 Production method for hydrophilic polymer 有权
标题翻译：亲水性聚合物的生产方法
公开(公告)号：US20070149701A1
公开(公告)日：2007-06-28
申请号：US11638580
申请日：2006-12-14
申请人： Yorimichi Dairoku , Yoshiro Mitsukami , Yoshio Irie , Shin-ichi Fujino
发明人： Yorimichi Dairoku , Yoshiro Mitsukami , Yoshio Irie , Shin-ichi Fujino
IPC分类号： C09D5/02
CPC分类号： C08F2/20 , C08F2/22 , C08F220/06 , C08F222/1006 , C08J3/245 , C08J2333/02
摘要： The subject invention provides a hydrophilic polymer (water-absorbing resin) which is superior in performance and productivity. According to the production method of the present invention, a hydrophilichigh-molecular-weight compound is dispersed in an aqueous solution containing a hydrophilic monomer. The dispersed hydrophilic high-molecular-weight compound is dissolved by heat of neutralization (heat of hydration) and/or heat of polymerization generated in the process of producing a hydrophilic polymer.
摘要翻译：本发明提供了性能和生产率优异的亲水性聚合物（吸水性树脂）。根据本发明的制造方法，将亲水性高分子量化合物分散在含有亲水性单体的水溶液中。分散的亲水性高分子量化合物在制备亲水性聚合物的过程中产生的中和热（水合热）和/或聚合热溶解。

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