公开(公告)号：US08791210B2

公开(公告)日：2014-07-29

申请号：US13201701

申请日：2010-02-17

申请人： Shigeru Sakamoto ,  Yoshio Irie ,  Kozo Nogi ,  Kunihiko Ishizaki

发明人： Shigeru Sakamoto ,  Yoshio Irie ,  Kozo Nogi ,  Kunihiko Ishizaki

IPC分类号： C08C19/00 ,  C08F20/10 ,  C08F222/20 ,  C08F2/34 ,  C08F8/00

CPC分类号： C08C19/00 ,  C08F2/10 ,  C08F2/16 ,  C08F2/34 ,  C08F8/00 ,  C08F20/10 ,  C08F220/06 ,  C08F222/20

摘要： A method for producing a polyacrylic water-absorbent resin powder includes the steps of: producing an acrylic monomer solution in which gas is dissolved and/or dispersed; polymerizing the monomer solution in the absence of a surface active agent or in the presence of not more than 300 ppm of a surface active agent; during or after polymerizing, fragmenting the resulting hydrated gel crosslinked polymer; and drying the fragmented hydrated gel crosslinked polymer, the gas being dissolved and/or dispersed in the monomer solution by (a) applying pressure to the acrylic monomer solution and the gas; (b) creating swirling flows of the acrylic monomer solution and the gas; or (c) introducing the gas with the acrylic monomer solution via fine holes. The production method efficiently produces a water-absorbent resin having an excellent water-absorption rate without deteriorating a liquid-absorbent property of a sanitary product or the like.

摘要翻译： 聚丙烯酸吸水性树脂粉末的制造方法包括以下工序：制造溶解和/或分散有气体的丙烯酸类单体溶液; 在不存在表面活性剂的情况下或在不超过300ppm表面活性剂的存在下聚合单体溶液; 在聚合期间或之后，将所得水合凝胶交联聚合物破碎; 并且通过（a）向丙烯酸单体溶液和气体施加压力，干燥碎裂的水合凝胶交联聚合物，气体溶解和/或分散在单体溶液中; （b）产生丙烯酸单体溶液和气体的旋流; 或（c）通过细孔将丙烯酸单体溶液引入气体。 制造方法有效地制造吸水率优异的吸水性树脂，而不会降低卫生用品等的吸液性。

公开(公告)号：US20120172536A1

公开(公告)日：2012-07-05

申请号：US13392256

申请日：2010-08-27

申请人： Kozo Nogi ,  Kunihiko Ishizaki ,  Katsuyuki Wada

发明人： Kozo Nogi ,  Kunihiko Ishizaki ,  Katsuyuki Wada

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 continuously producing a polyacrylic acid (salt)-type water absorbent resin powder, which comprises: a step of preparing an aqueous monomer solution using an acrylic acid (salt); a step of polymerizing the aqueous monomer solution; a shredding 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; a step of crushing and classifying the dried product; a step of heating and surface-crosslinking after the classification; and a step of cooling after the surface-crosslinking. In the method for producing a polyacrylic acid (salt)-type water absorbent resin, the internal area of the cooling device that is used in the cooling step is 0.25-0.95 times the internal area of the heating device that is used in the surface-crosslinking step.

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。 具体公开了一种连续生产聚丙烯酸（盐）型吸水性树脂粉末的方法，其包括：使用丙烯酸（盐）制备单体水溶液的步骤; 聚合单体水溶液的步骤; 在聚合期间或之后的含水凝胶状交联聚合物的粉碎步骤; 干燥由此得到的颗粒含水凝胶状交联聚合物的步骤; 破碎和分级干燥产品的步骤; 分类后加热和表面交联的步骤; 和表面交联后的冷却步骤。 在聚丙烯酸（盐）型吸水性树脂的制造方法中，冷却工序中使用的冷却装置的内部面积为表面活性剂中使用的加热装置的内部面积的0.25〜0.95倍， 交联步骤。

公开(公告)号：US08765906B2

公开(公告)日：2014-07-01

申请号：US13643682

申请日：2011-04-27

申请人： Yusuke Watanabe ,  Kazushi Torii ,  Kozo Nogi ,  Kunihiko Ishizaki ,  Reiko Nakatsuru ,  Shigeru Sakamoto

发明人： Yusuke Watanabe ,  Kazushi Torii ,  Kozo Nogi ,  Kunihiko Ishizaki ,  Reiko Nakatsuru ,  Shigeru Sakamoto

IPC分类号： C08G63/02 ,  C08G63/00

CPC分类号： C08J3/12 ,  C08F6/008 ,  C08F122/105 ,  C08F220/06 ,  C08J3/122 ,  C08J3/245 ,  C08J2333/02 ,  C08L33/02

摘要： A water absorbent resin having less fine powder or powdery dust and a controlled particle size is provided, and the water absorption rate of the water absorbent resin is increased by a simple method at low cost, while maintaining or improving other physical properties such as liquid permeability. Disclosed is a method for producing a polyacrylic acid (salt)-type water absorbent resin powder, which includes, in sequence, a step of polymerizing an aqueous solution of acrylic acid (salt)-type monomer; a step of gel-crushing a gel of a water-containing gel-like crosslinked polymer during polymerization or after polymerization; a step of drying the water-containing gel-like crosslinked polymer; and a step of pulverizing and classifying the dried polymer, wherein water absorbent resin fine particles having a particle size of less than 150 μm or a hydrated-particles thereof is added to a step prior to the drying step, and in the drying step, hot air drying is carried out with a hot air having an average flow velocity of 1.0 to 3.0 [m/s], a dew point of 30° C. to 100° C., and a hot air temperature of 140° C. to 235° C.

摘要翻译： 提供具有较少粉末或粉末粉尘和受控粒度的吸水性树脂，并且通过简单的方法以低成本提高吸水性树脂的吸水率，同时保持或改善其它物理性质如液体渗透性 。 公开了一种聚丙烯酸（盐）型吸水性树脂粉末的制造方法，其中，依次包括使丙烯酸（盐）型单体的水溶液聚合的工序; 在聚合过程中或聚合后凝胶化凝胶状凝胶状交联聚合物凝胶的步骤; 干燥含水凝胶状交联聚合物的工序; 将干燥聚合物粉碎并分级的步骤，其中在干燥步骤之前的步骤中加入粒径小于150μm的吸水性树脂微粒或其水合颗粒，并且在干燥步骤中，热 使用平均流速为1.0〜3.0 [m / s]，露点为30℃〜100℃，热风温度为140℃〜235℃的热风进行空气干燥 C。

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。

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。

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。

公开(公告)号：US09023951B2

公开(公告)日：2015-05-05

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： C08F20/06 ,  C08J3/24 ,  A61L15/24 ,  A61L15/60 ,  C08F120/06 ,  C08F220/06

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。

公开(公告)号：US08596931B2

公开(公告)日：2013-12-03

申请号：US12593443

申请日：2008-03-28

申请人： Teruhisa Nagashima ,  Masatoshi Nakamura ,  Yusuke Watanabe ,  Kozo Nogi ,  Kunihiko Ishizaki

发明人： Teruhisa Nagashima ,  Masatoshi Nakamura ,  Yusuke Watanabe ,  Kozo Nogi ,  Kunihiko Ishizaki

IPC分类号： B65G53/00

CPC分类号： C08J3/12 ,  A61L15/60 ,  B01J20/267 ,  B01J2220/68 ,  C08J2301/00 ,  C08J2303/00

摘要： A method includes the steps of: adding an organic surface cross-linking agent to a water absorbent resin having a cross-linked structure; adding a liquid permeability improving agent to the water absorbent resin concurrently with or after the addition of the organic surface cross-linking agent; and then adding a lubrication improving agent to the water absorbent resin. This provides a particulate water absorbing agent and a method for producing it, the particulate water absorbing agent being suitable for pneumatic transportation, suffering no decrease in the effect of the liquid permeability improving agent, and excelling in properties such as fluidity and damage resistance after the pneumatic transportation.

摘要翻译： 一种方法包括以下步骤：向具有交联结构的吸水性树脂中加入有机表面交联剂; 在添加有机表面交联剂的同时或之后向吸水性树脂中加入透液性改进剂; 然后向吸水性树脂中添加润滑改善剂。 这提供了一种颗粒状吸水剂及其制造方法，该颗粒状吸水剂适用于气动输送，不会降低透液性改善剂的作用，并且在其后的流动性和耐损伤性等性能方面优异 气动运输。

公开(公告)号：US20120157650A1

公开(公告)日：2012-06-21

申请号：US13392214

申请日：2010-08-27

申请人： Kozo Nogi ,  Kunihiko Ishizaki ,  Kazumasa Konishi

发明人： Kozo Nogi ,  Kunihiko Ishizaki ,  Kazumasa Konishi

IPC分类号： C08F20/06

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： A process for producing a water absorbent resin is provided with which it is possible to efficiently and inexpensively obtain a surface-crosslinked water-absorbing resin having excellent material properties, while ensuring high productivity. In continuous production scaled up to a large scale (in particular, 1 t/hr or more), the physical properties are improved and stabilized (for example, a reduction in standard deviation of the physical properties) by a surface crosslinking treatment to further improve absorption against pressure (AAP) and saline flow conductivity (SFC). The process for producing a polyacrylic acid (salt)-type water absorbent resin includes a surface treatment step in which after addition of a surface-crosslinking agent, a crosslinking reaction is conducted in a transverse type continuous stirring apparatus having stirring means including a feeding inlet and a discharging outlet of a water absorbent resin and one or more rotary shafts having with a plurality of stirring discs, and heating means, at a stirring-power index of the device of 3-15 W·hr/kg. (Stirring-power index)=((power consumption of apparatus at the time surface treatment)−(power consumption at the time of idling))×average retention time)/(treatment amount per unit time×average retention time)

摘要翻译： 提供一种生产吸水性树脂的方法，其可以有效且廉价地获得具有优异材料性能的表面交联吸水性树脂，同时确保高生产率。 在大规模（特别是1t / hr以上）的连续生产中，物理性能通过表面交联处理得到改善和稳定（例如物理性能的标准偏差的降低），以进一步改善 吸收抗压力（AAP）和盐水流动电导率（SFC）。 制备聚丙烯酸（盐）型吸水性树脂的方法包括表面处理步骤，其中加入表面交联剂后，在具有搅拌装置的横向连续搅拌装置中进行交联反应，所述搅拌装置包括进料口 以及具有多个搅拌盘的吸水性树脂的排出口和具有多个搅拌盘和加热装置的装置的搅拌功率指数为3-15W·hr / kg的一个或多个旋转轴。 （搅拌功率指数）=（（表面处理时的设备的功率消耗） - （怠速时的功耗）×平均保持时间）/（每单位时间的处理量×平均保持时间）

公开(公告)号：US20120157625A1

公开(公告)日：2012-06-21

申请号：US13392639

申请日：2010-08-27

申请人： Takahiro Kitano ,  Kozo Nogi ,  Kunihiko Ishizaki

发明人： Takahiro Kitano ,  Kozo Nogi ,  Kunihiko Ishizaki

IPC分类号： C08F2/01 ,  C08F20/06

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 at 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 water absorbent resin, which is characterized in that the stirring shaft of the continuous mixing apparatus for the surface-crosslinking agent is heated during the mixing step of the surface-crosslinking agent or that the continuous mixing apparatus for the surface-crosslinking agent is operated at a pressure that is reduced relative to the ambient pressure and a gas flow is passed through the mixing apparatus during the mixing of the surface-crosslinking agent so that the gas flow in the mixing apparatus is 40° C. or more (when defined with respect to the gas temperature at the exit).

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。 当生产规模增加到1t / hr以上的连续生产时，通过表面交联处理改善和稳定物理性能（例如物理性能的标准偏差），并且抗压力 （AAP）和液体渗透性（SFC）进一步提高。 具体公开了一种吸水性树脂的制造方法，其特征在于，表面交联剂的连续混合装置的搅拌轴在表面交联剂的混合工序中被加热， 表面交联剂在相对于环境压力降低的压力下操作，并且在混合表面交联剂期间使气流通过混合装置，使得混合装置中的气流为40℃ 或更多（当相对于出口处的气体温度定义时）。