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31. 发明授权

US10493429B2 Method for producing polyacrylic acid (salt)-based water absorbent resin powder 有权
公开(公告)号：US10493429B2
公开(公告)日：2019-12-03
申请号：US13982147
申请日：2012-01-30
申请人： Kozo Nogi , Masatoshi Nakamura , Hirofumi Shibata , Koji Honda , Yusuke Watanabe , Satoshi Matsumoto , Reiko Nakatsuru , Kunihiko Ishizaki
发明人： Kozo Nogi , Masatoshi Nakamura , Hirofumi Shibata , Koji Honda , Yusuke Watanabe , Satoshi Matsumoto , Reiko Nakatsuru , Kunihiko Ishizaki
IPC分类号： C08J3/24 , B01J20/26 , B01J20/28 , B01J20/30
CPC分类号： B01J20/3085 , B01J20/267 , B01J20/28085 , C08J3/245 , B01J2220/68 , C08J2333/02
摘要： From a view pint of decreasing an out of spec product after surface crosslinking, particularly, when an alkylene carbonate compound is used as a surface crosslinking agent, influence due to an air temperature is great, and it is necessary to reduce ethylene glycol which is produced as a byproduct.
There is provided a process for producing a polyacrylic acid (salt)-based water absorbent resin powder, comprising storing a non-polymerized organic compound being a raw material (modified raw material) of a water absorbent resin powder in a heated state, thereafter, mixing the non-polymerized organic compound with other compound at a predetermined ratio and, further, mixing the mixture into a water absorbent resin powder.

32. 发明授权

US09624322B2 Method of producing water absorbent resin 有权
公开(公告)号：US09624322B2
公开(公告)日：2017-04-18
申请号：US13635055
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： B07B1/56 , C08F120/06 , C08F220/06 , C08J3/24 , C08F6/00 , B07B1/54 , 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 tapping material and a metal sieve mesh, in which the tapping material being heated at 40° C. to 100° C. is installed below the metal sieve mesh, and the metal sieve mesh has an area of 1 to 10 m2/sheet. The classification step further requires introducing a classification aid particle, which has a specific gravity different from that of the water absorbent resin, to the metal sieve mesh; and monitoring the presence or absence of damage to the metal sieve mesh.

33. 发明申请

US20140042364A1 METHOD FOR PRODUCING POLYACRYLIC ACID (SALT)-BASED WATER ABSORBENT RESIN POWDER 审中-公开
标题翻译：生产聚丙烯酸（盐） - 水吸收树脂粉末的方法
公开(公告)号：US20140042364A1
公开(公告)日：2014-02-13
申请号：US13982147
申请日：2012-01-30
申请人： Kozo Nogi , Masatoshi Nakamura , Hirofumi Shibata , Koji Honda , Yusuke Watanabe , Satoshi Matsumoto , Reiko Nakatsuru , Kunihiko Ishizaki
发明人： Kozo Nogi , Masatoshi Nakamura , Hirofumi Shibata , Koji Honda , Yusuke Watanabe , Satoshi Matsumoto , Reiko Nakatsuru , Kunihiko Ishizaki
IPC分类号： B01J20/30
摘要： From a view pint of decreasing an out of spec product after surface crosslinking, particularly, when an alkylene carbonate compound is used as a surface crosslinking agent, influence due to an air temperature is great, and it is necessary to reduce ethylene glycol which is produced as a byproduct.There is provided a process for producing a polyacrylic acid (salt)-based water absorbent resin powder, comprising storing a non-polymerized organic compound being a raw material (modified raw material) of a water absorbent resin powder in a heated state, thereafter, mixing the non-polymerized organic compound with other compound at a predetermined ratio and, further, mixing the mixture into a water absorbent resin powder.
摘要翻译：特别是在使用碳酸亚烷基酯化合物作为表面交联剂时，从表面交联后的规格产物减少的观点出发，由于空气温度的影响大，需要还原生产的乙二醇作为副产品。提供了一种制备基于聚丙烯酸（盐）的吸水性树脂粉末的方法，其包括将加热状态下的吸水性树脂粉末的原料（改性原料）的未聚合有机化合物，以预定的比例将未聚合的有机化合物与其它化合物混合，再将混合物混合到吸水性树脂粉末中。

34. 发明申请

US20140031473A1 METHOD FOR PRODUCING POLYACRYLIC ACID (SALT)-BASED WATER ABSORBENT RESIN POWDER 有权
标题翻译：生产聚丙烯酸（盐） - 水吸收树脂粉末的方法
公开(公告)号：US20140031473A1
公开(公告)日：2014-01-30
申请号：US13982166
申请日：2012-01-30
申请人： Kozo Nogi , Masatoshi Nakamura , Hirofumi Shibata , Koji Honda , Yusuke Watanabe , Satoshi Matsumoto , Reiko Nakatsuru , Kunihiko Ishizaki , Kazuki Kimura , Sayaka Machida
发明人： Kozo Nogi , Masatoshi Nakamura , Hirofumi Shibata , Koji Honda , Yusuke Watanabe , Satoshi Matsumoto , Reiko Nakatsuru , Kunihiko Ishizaki , Kazuki Kimura , Sayaka Machida
IPC分类号： C08F20/06
CPC分类号： C08F20/06 , C08F220/06 , C08J3/12 , C08J3/24 , C08J3/245 , C08J2333/02 , C09D133/04 , C08F2222/1013
摘要： From a viewpoint of reduction in an out of spec product after surface crosslinking, particularly, when an alkylene carbonate compound is used as a surface crosslinking agent, influence by an air temperature is great, and it is necessary to reduce ethylene glycol which is produced as a byproduct, and there is provided a process for producing a polyacrylic acid (salt)-based water absorbent resin powder, comprising a step of polymerizing an aqueous acrylic acid (salt)-based monomer solution, a step of drying the resulting polymer, an optional grinding•classifying step, and a surface crosslinking step, wherein in the surface crosslinking step, (1) a surface crosslinking agent containing an alkylene carbonate compound and a polyhydric alcohol compound is mixed into a water absorbent resin powder, the mixture is heat-reacted and, further, simultaneously with, or separately from the mixing, an ion reactive surface crosslinking agent is mixed, and/or (2) mixing treatment of mixing a surface crosslinking agent solution into a water absorbent resin powder containing at least one or more kinds of ion reactive surface crosslinking agents is performed two or more times.
摘要翻译：从表面交联后的特定产品的减少的观点出发，特别是使用碳酸亚烷基酯化合物作为表面交联剂时，空气温度的影响大，需要将生成的乙二醇副产物，并且提供了一种生产聚丙烯酸（盐）基吸水性树脂粉末的方法，包括使基于丙烯酸（盐）的单体水溶液聚合的步骤，干燥所得聚合物的步骤，任选的研磨分级步骤和表面交联步骤，其中在表面交联步骤中，（1）将含有碳酸亚烃酯化合物和多元醇化合物的表面交联剂混合到吸水性树脂粉末中，与混合反应，进一步，同时或分开地混合，离子反应性表面交联剂混合，和/或（2）混合处理混合表面cr 将含有至少一种以上离子反应性表面交联剂的吸水性树脂粉末中的脱硫剂溶液进行两次以上。

35. 发明申请

US20120157644A1 PRODUCTION METHOD FOR WATER-ABSORBENT RESIN 有权
标题翻译：吸水树脂的生产方法
公开(公告)号：US20120157644A1
公开(公告)日：2012-06-21
申请号：US13392698
申请日：2010-08-30
申请人： Shinichi Fujino , Kozo Nogi , Kunihiko Ishizaki
发明人： Shinichi Fujino , Kozo Nogi , Kunihiko Ishizaki
IPC分类号： C08F2/00 , C08F20/06
CPC分类号： C08J3/12 , C08J3/245 , C08J2300/14 , C08J2333/02
摘要： [PROBLEM]It is an object of the present invention to efficiently obtain efficiently a water-absorbent resin having excellent property.[SOLUTION]A production method for a water-absorbent resin, comprising: a polymerization step for obtaining hydrogel by subjecting a monomer aqueous solution to a polymerization reaction; and a drying step for drying the hydrogel; wherein drying in the drying step is performed using a continuous through-flow belt-type drying machine; pore opening rate of the through-flow belt in the continuous through-flow belt-type drying machine is 20 to 50%; solid content of the hydrogel supplied to the drying step is 35% by weight or more; and area occupancy rate of the hydrogel is 85 to 100% relative to the through-flow belt.
摘要翻译：本发明的目的在于有效地获得具有优异性能的吸水性树脂。 [解决方案]一种吸水性树脂的制备方法，包括：通过使单体水溶液进行聚合反应获得水凝胶的聚合步骤; 和干燥步骤，用于干燥水凝胶; 其中干燥步骤中的干燥是使用连续的通流式带式干燥机进行的; 连续通流式带式干燥机中通流带的开孔率为20〜50％; 提供给干燥步骤的水凝胶的固体含量为35重量％以上; 水凝胶的面积占有率相对于贯流带为85〜100％。

36. 发明申请

US20120157635A1 POLYACRYLIC ACID (SALT)-TYPE WATER ABSORBENT RESIN AND METHOD FOR PRODUCING OF SAME 有权
标题翻译：聚丙烯酸（盐）型吸水树脂及其制造方法
公开(公告)号：US20120157635A1
公开(公告)日：2012-06-21
申请号：US13392240
申请日：2010-08-27
申请人： Kozo Nogi , Kunihiko Ishizaki , Syuji Kanzaki
发明人： Kozo Nogi , Kunihiko Ishizaki , Syuji Kanzaki
IPC分类号： C08F120/06
CPC分类号： A61L15/24 , A61L15/60 , C08F120/06 , C08F220/06 , C08J3/24 , C08J3/245 , C08J2300/14 , C08J2333/02 , C08L33/08 , C08F2222/1013
摘要： Disclosed is a method for producing a water absorbent resin, by which a surface-crosslinked water absorbent resin having excellent physical properties can be efficiently obtained at low cost, while assuring high productivity. When the production scale is increased to a continuous production on a huge scale (for example, 1 t/hr or more), the physical properties are improved and stabilized (for example, standard deviation of the physical properties is reduced) by a surface-crosslinking treatment, and the absorption against pressure (AAP) and liquid permeability (SFC) are further improved. Specifically disclosed is a method for producing a polyacrylic acid (salt)-type water absorbent resin, which comprises: a step of preparing an aqueous monomer solution using an acrylic acid (salt); a step of continuously polymerizing the aqueous monomer solution; shedding step of a hydrous gel-like crosslinked polymer during or after the polymerization; a step of drying the thus-obtained particulate hydrous gel-like crosslinked polymer; and a surface treatment step in which a surface-crosslinking agent is added to and reacted with the dried water absorbent resin powder. In the surface treatment step, the continuous mixing apparatus for the surface treatment agent and the continuous heating device are connected and periodic shielding is performed between the mixing apparatus and the heating device.
摘要翻译：公开了一种生产吸水性树脂的方法，通过该方法可以以低成本有效地获得具有优异物理性能的表面交联吸水性树脂，同时确保高生产率。当生产规模以大规模（例如1吨/小时以上）增加到连续生产时，通过表面活性剂改善和稳定物理性能（例如物理性能的标准偏差）交联处理，耐压吸收（AAP）和液体渗透性（SFC）进一步提高。具体公开了一种聚丙烯酸（盐）型吸水性树脂的制造方法，其特征在于，包括：使用丙烯酸（盐）制备单体水溶液的工序; 连续聚合单体水溶液的步骤; 在聚合期间或之后，含水凝胶状交联聚合物的脱落步骤; 干燥由此得到的颗粒含水凝胶状交联聚合物的步骤; 以及表面处理工序，其中加入表面交联剂并与干燥的吸水性树脂粉末反应。在表面处理步骤中，表面处理剂和连续加热装置的连续混合装置连接，并且在混合装置和加热装置之间进行周期性屏蔽。

37. 发明申请

US20110166300A1 WATER-ABSORBENT RESIN MANUFACTURING METHOD AND LIQUID PERMEABILITY IMPROVEMENT METHOD 有权
标题翻译：吸水树脂制造方法和液体渗透性改进方法
公开(公告)号：US20110166300A1
公开(公告)日：2011-07-07
申请号：US13061581
申请日：2009-09-11
申请人： Yorimichi Dairoku , Kozo Nogi , Syuji Kanzaki , Kunihiko Ishizaki , Koji Matsumoto , Yoshiro Mitsukami
发明人： Yorimichi Dairoku , Kozo Nogi , Syuji Kanzaki , Kunihiko Ishizaki , Koji Matsumoto , Yoshiro Mitsukami
IPC分类号： C08F8/14
CPC分类号： C08F20/06 , C08F6/003 , C08F6/02 , C08F220/06 , C08J3/245 , C08J2300/14 , C08J2333/02 , C08L33/02
摘要： A method for the production of a water-absorbing resin is to be provided which permits enhancement and stabilization of property, for example, liquid permeability, of a water-absorbing resin by a simple and convenient method without requiring change of raw materials or expensive facility investment. The method comprises a polymerization step for polymerizing an aqueous solution of acrylic acid (or salt thereof) to obtain a hydrogel cross-linked polymer; a drying step for drying the hydrogel cross-linked polymer to obtain a water-absorbing resin powder; a classification step for classifying the water-absorbing resin powder; and a surface cross-linking step for surface cross-linking the water-absorbing resin powder before or after the classification step, wherein electricity is eliminated in the classification step.
摘要翻译：提供一种制造吸水性树脂的方法，其通过简单方便的方法可以提高和稳定吸水性树脂的性能，例如透液性，而不需要改变原料或昂贵的设备投资。该方法包括聚合丙烯酸（或其盐）水溶液以获得水凝胶交联聚合物的聚合步骤; 用于干燥水凝胶交联聚合物以获得吸水性树脂粉末的干燥步骤; 用于分类吸水性树脂粉末的分级步骤; 以及在分级步骤之前或之后使吸水性树脂粉末表面交联的表面交联步骤，其中在分级步骤中消除电。

38. 发明授权

US4920202A Method for production of hydrophilic polymer from hydrated gel polymer 失效
标题翻译：从水合凝胶聚合物制备亲水聚合物的方法
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.

39. 发明授权

US08519212B2 Water-absorbent resin, hydropolymer, process for producing them, and uses of them 有权
公开(公告)号：US08519212B2
公开(公告)日：2013-08-27
申请号：US12777373
申请日：2010-05-11
申请人： Yorimichi Dairoku , Yoshio Irie , Shinichi Fujino , Yasuhiro Fujita , Takashi Azumi , Kunihiko Ishizaki
发明人： Yorimichi Dairoku , Yoshio Irie , Shinichi Fujino , Yasuhiro Fujita , Takashi Azumi , Kunihiko Ishizaki
IPC分类号： A61F13/49 , C08F8/00 , C08F20/06 , C08F2/48
CPC分类号： C08F220/06 , A61L15/24 , C08F2/001 , C08F2/01 , C08F2/10 , C08F20/06 , C08F222/1006 , C08L33/02
摘要： The present invention provides a production process by which a water-absorbent resin of excellent quality can be obtained at a low cost by reasonable steps in aqueous solution polymerization. The process for producing a water-absorbent resin comprises the step of polymerizing an aqueous solution of water-absorbent resin-forming monomers including acrylic acid and/or its sodium salt as major components, wherein: (1) the aqueous solution has a monomer component concentration of not less than 45 weight %; (2) the polymerization is carried out while water is evaporated so that the ratio (concentration ratio) between a solid component concentration in a hydropolymer as formed by the polymerization and a solid component concentration in the aqueous monomer solution will not be less than 1.10; and (3) the solid component concentration in the hydropolymer as formed by the polymerization is not more than 80 weight %.

40. 发明申请

US20050054788A1 Water-absorbent resin, hydropolymer, process for producing them, and uses of them 有权
公开(公告)号：US20050054788A1
公开(公告)日：2005-03-10
申请号：US10942851
申请日：2004-09-17
申请人： Yorimichi Dairoku , Yoshio Irie , Shinichi Fujino , Yasuhiro Fujita , Takashi Azumi , Kunihiko Ishizaki
发明人： Yorimichi Dairoku , Yoshio Irie , Shinichi Fujino , Yasuhiro Fujita , Takashi Azumi , Kunihiko Ishizaki
IPC分类号： A61L15/24 , C08F2/00 , C08F20/06
CPC分类号： C08F220/06 , A61L15/24 , C08F2/001 , C08F2/01 , C08F2/10 , C08F20/06 , C08F222/1006 , C08L33/02
摘要： The present invention provides a production process by which a water-absorbent resin of excellent quality can be obtained at a low cost by reasonable steps in aqueous solution polymerization. The process for producing a water-absorbent resin comprises the step of polymerizing an aqueous solution of water-absorbent resin-forming monomers including acrylic acid and/or its sodium salt as major components, wherein: (1) the aqueous solution has a monomer component concentration of not less than 45 weight %; (2) the polymerization is carried out while water is evaporated so that the ratio (concentration ratio) between a solid component concentration in a hydropolymer as formed by the polymerization and a solid component concentration in the aqueous monomer solution will not be less than 1.10; and (3) the solid component concentration in the hydropolymer as formed by the polymerization is not more than 80 weight %.

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