专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明授权

US09138505B2 Polyacrylic acid (salt)-type water absorbent resin and method for producing of same 有权
标题翻译：聚丙烯酸（盐）型吸水性树脂及其制造方法
公开(公告)号：US09138505B2
公开(公告)日：2015-09-22
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： C08F20/02 , A61L15/24 , C08J3/24 , 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 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。

32. 发明授权

US08859685B2 Polyacrylic acid (salt)-type water absorbent resin and method for producing of same 有权
标题翻译：聚丙烯酸（盐）型吸水性树脂及其制造方法
公开(公告)号：US08859685B2
公开(公告)日：2014-10-14
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 , C08J3/24 , C08F8/30 , C08F8/42 , A61L15/60 , C08F220/06 , C08F120/06 , A61L15/24
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）/（每单位时间处理量×平均保持时间）。

33. 发明授权

US08772413B2 Polyacrylic acid (salt)-type water absorbent resin and method for producing of same 有权
公开(公告)号：US08772413B2
公开(公告)日：2014-07-08
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
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).

34. 发明申请

US20130102750A1 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：US20130102750A1
公开(公告)日：2013-04-25
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： C08J3/12 , C08F122/10
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; 以及将干燥聚合物粉碎分级的步骤，其中将粒径小于150μm的吸水性树脂细颗粒或其水合物颗粒加入到干燥步骤之前的步骤中，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。

35. 发明申请

US20110088806A1 METHOD OF TRANSPORTING ABSORBENT RESIN POWDER 有权
标题翻译：运输吸收树脂粉的方法
公开(公告)号：US20110088806A1
公开(公告)日：2011-04-21
申请号：US12935052
申请日：2009-03-26
申请人： Kozo Nogi , Masatoshi Nakamura , Koji Matsumoto , Kazuma Awai
发明人： Kozo Nogi , Masatoshi Nakamura , Koji Matsumoto , Kazuma Awai
IPC分类号： B65B1/16
CPC分类号： C08J3/12 , C08F6/008 , C08J3/075 , C08J3/245 , C08J2333/02
摘要： Provided is a method of transporting an absorbent resin powder, said method being suitable for long-distance transport, and being able to inhibit the deterioration of the properties of the absorbent resin powder while also inhibiting obstructions. During the manufacturing process, the absorbent resin powder is transported pneumatically via transport pipes. This transport method involves two or more air transport devices (A, B, C) within one transport section, and the air transport devices (A, B, C) are connected in series by transport pipes (P1, P2, P3).
摘要翻译：提供了一种输送吸收性树脂粉末的方法，所述方法适用于长距离运输，并且能够抑制吸收性树脂粉末的性能的劣化同时也抑制障碍物。在制造过程中，吸收性树脂粉末通过运输管道气动输送。该输送方法涉及一个输送部内的两个以上的空气输送装置（A，B，C），空气输送装置（A，B，C）由输送管（P1，P2，P3）串联连接。

36. 发明申请

US20080269372A1 Particulate water absorbent agent and production method thereof, and water absorbent article 有权
标题翻译：颗粒状吸水剂及其制造方法和吸水性物品
公开(公告)号：US20080269372A1
公开(公告)日：2008-10-30
申请号：US12078802
申请日：2008-04-04
申请人： Yorimichi Dairoku , Yoshifumi Adachi , Kozo Nogi , Hiroki Inoue , Katsuyuki Wada , Yoshio Irie
发明人： Yorimichi Dairoku , Yoshifumi Adachi , Kozo Nogi , Hiroki Inoue , Katsuyuki Wada , Yoshio Irie
IPC分类号： C08J5/14
CPC分类号： C08J3/243 , A61L15/60 , B01J20/26 , B01J20/267 , B01J2220/68 , C08J2300/102
摘要： A particulate water absorbing agent of the present invention includes a water absorbent resin, having a cross-linking structure, whose surface has been cross-linked by adding a surface treatment agent, wherein: (i) a mass average particle diameter (D50) ranges from 200 to 600 μm and 95 to 100 wt % of a particulate water absorbing agent whose particle diameter ranges from less than 850 μm to not less than 150 μm is contained with respect to 100 wt % of whole the particulate water absorbing agent, and (ii) a logarithmic standard deviation (σζ) of particle size distribution ranges from 0.25 to 0.45, and (iii) a compressibility rate defined by a following equation ranges from 0 to 18%, and (iv) a surface tension of a supernatant liquid obtained in 4 minutes after dispersing 0.5 g of the particulate water absorbing agent in 50 ml of physiological saline whose temperature is 20° C. is 55 mN/m or more, the compressibility rate (%)=(P−A)/P×100 where P represents a tapped bulk density of the particulate water absorbing agent and A represents a loose bulk density of the particulate water absorbing agent.
摘要翻译：本发明的颗粒状吸水剂包括具有交联结构的吸水性树脂，其表面通过添加表面处理剂进行交联，其中：（i）质量平均粒径（D50）范围相对于全部颗粒状吸水剂的100重量％，含有200〜600μm，95〜100wt％粒径范围在850μm〜150μm以下的颗粒状吸水剂，（ ii）粒度分布的对数标准偏差（sigmazeta）范围为0.25〜0.45，（iii）由下式表示的压缩率为0〜18％，（iv）得到的上清液的表面张力在将0.5g颗粒状吸水剂分散在温度为20℃的50ml生理盐水中的4分钟内，在＆lt;＆lt;直线式说明书=“在线式”末端 =“铅”？>压缩性 y率（％）=（PA）/ P×100 <？在线公式描述=“在线公式”end =“tail”？>其中P表示颗粒状吸水剂的抽头堆积密度，A表示颗粒状吸水剂的松散堆积密度。

37. 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.

38. 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.

39. 发明授权

US08765906B2 Method for producing polyacrylic acid (salt) type water absorbent resin powder 有权
标题翻译：聚丙烯酸（盐）型吸水性树脂粉末的制造方法
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。

40. 发明授权

US08703859B2 Production method for water-absorbing resin composition 有权
标题翻译：吸水性树脂组合物的制造方法
公开(公告)号：US08703859B2
公开(公告)日：2014-04-22
申请号：US11725496
申请日：2007-03-20
申请人： Takahiro Kitano , Yorimichi Dairoku , Sumio Okuda , Kozo Nogi , Motohiro Imura
发明人： Takahiro Kitano , Yorimichi Dairoku , Sumio Okuda , Kozo Nogi , Motohiro Imura
IPC分类号： C08K3/34 , C08L31/00 , C08L33/00 , C08L33/02
CPC分类号： A61L15/22 , A61L15/60 , C08J3/203
摘要： The present invention provides a method for being capable of sufficiently exerting property improvement effect by the addition of additive particles other than water-absorbing resin to water-absorbing resin particles. The problems can be solved by using additive particles having over cohesive particles in an amount equal to or less than a predetermined amount, or by using the additive particles by crushing or classifying in advance, before mixing with water-absorbing resin particles. Alternatively, the problem can be solved by subjecting a mixture of the water-absorbing resin particles and the additive particles to pneumatic transportation processing, in particular, in a heated state, after mixing or at the same time as mixing. Further, the present invention provides a water-absorbing resin composition, which is capable of stably exerting high-level property. The problems can be solved by a water-absorbing resin composition, where the addition amount of additive particles and amount of free additive particles satisfies a predetermined relation.
摘要翻译：本发明提供一种能够通过向吸水性树脂粒子中添加吸水性树脂以外的添加剂粒子来充分发挥特性改善效果的方法。可以通过使用具有等于或小于预定量的粘结颗粒的添加剂颗粒，或者通过在与吸水性树脂颗粒混合之前预先使用添加剂颗粒进行粉碎或分级来解决这些问题。或者，可以通过使吸水性树脂颗粒和添加剂颗粒的混合物在混合之后或在混合的同时进行气动输送处理，特别是处于加热状态来解决问题。此外，本发明提供能够稳定地施加高水平特性的吸水性树脂组合物。这些问题可以通过吸水性树脂组合物来解决，其中添加剂颗粒的添加量和游离添加剂颗粒的量满足预定的关系。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式