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1. 发明授权

EP2471847B2 PROCESS FOR PRODUCTION OF WATER-ABSORBABLE RESIN 有权
公开(公告)号：EP2471847B2
公开(公告)日：2018-01-03
申请号：EP10812058.5
申请日：2010-08-30
申请人： Nippon Shokubai Co., Ltd.
发明人： FUJINO, Shinichi , NOGI, Kozo , ISHIZAKI, Kunihiko
IPC分类号： C08J3/24 , C08J3/12 , A61L15/00
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; solid content of the hydrogel supplied to the drying step is 35% by weight or more, and thickness variation rate (1) represented by the following EXPRESSION 1 of the hydrogel loaded onto through-flow belt in the continuous through-flow belt, is 1.05 to 5: EXPRESSION 1 Thickness variation rate 1 = Maximum thickness of hydrogel in a width direction of the through - flow belt / Average thickness of hydrogel in a width direction of the through - flow belt .

2. 发明授权

EP2471843B1 METHOD FOR PRODUCING POLYACRYLIC ACID (SALT) WATER ABSORBENT RESIN 有权
标题翻译： PROCESS FOR基于聚丙烯酸的制备吸水树脂（SALT）
公开(公告)号：EP2471843B1
公开(公告)日：2016-08-17
申请号：EP10812020.5
申请日：2010-08-27
申请人： Nippon Shokubai Co., Ltd.
发明人： NOGI, Kozo , ISHIZAKI, Kunihiko , WADA, Katsuyuki
IPC分类号： A61L15/24 , A61L15/60 , C08F120/06 , C08F220/06 , C08J3/24
CPC分类号： A61L15/24 , A61L15/60 , C08F120/06 , C08F220/06 , C08J3/24 , C08J3/245 , C08J2300/14 , C08J2333/02 , C08L33/08 , C08F2222/1013

3. 发明授权

EP2263957B1 Method of transporting absorbent resin powder 有权
标题翻译：传输方法的吸水性树脂粉末
公开(公告)号：EP2263957B1
公开(公告)日：2013-02-13
申请号：EP09724168.1
申请日：2009-03-26
申请人： Nippon Shokubai Co., Ltd.
发明人： NOGI, Kozo , NAKAMURA, Masatoshi , MATSUMOTO, Koji , AWAI, Kazuma
IPC分类号： B65G51/02 , B65G53/52 , C08J3/12 , B65G53/66 , B65G53/04
CPC分类号： C08J3/12 , C08F6/008 , C08J3/075 , C08J3/245 , C08J2333/02

4. 发明公开

EP2471848A1 PROCESS FOR PRODUCTION OF WATER-ABSORBABLE RESIN 有权
标题翻译：生产吸水树脂的方法
公开(公告)号：EP2471848A1
公开(公告)日：2012-07-04
申请号：EP10812059.3
申请日：2010-08-30
申请人： Nippon Shokubai Co., Ltd.
发明人： MATSUMOTO, Koji , NOGI, Kozo , FUJINO, Shinichi , DAIROKU, Yorimichi , ISHIZAKI, Kunihiko
IPC分类号： C08J3/24 , C08J3/12
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; solid content of the hydrogel supplied to the drying step is 35% by weight or more, and thickness variation rate (1) represented by the following EXPRESSION 1 of the hydrogel loaded onto through-flow belt in the continuous through-flow belt, is 1.05 to 5: EXPRESSION 1 Thickness variation rate 1 = Maximum thickness of hydrogel in a width direction of the through - flow belt / Average thickness of hydrogel in a width direction of the through - flow belt .
摘要翻译：发明内容本发明的目的在于有效地高效率地得到性能优异的吸水性树脂。用于吸水性树脂的生产方法，其包括：用于通过使单体水溶液进行聚合反应来获得水凝胶的聚合步骤; 和用于干燥水凝胶的干燥步骤; 其中干燥步骤中的干燥使用连续通流带式干燥机进行; 向干燥工序供给的水凝胶的固体成分为35重量％以上，在连续流通带上装载在通流带上的水凝胶的下述表达式1所示的厚度变化率（1）为1.05 至5：表达式1厚度变化率1 =在通流带的宽度方向上的水凝胶的最大厚度/在通流带的宽度方向上的水凝胶的平均厚度。

5. 发明公开

EP2471845A1 WATER-ABSORBING RESIN BASED ON POLYACRYLIC ACID (SALT) AND PROCESS FOR PRODUCING SAME 有权
标题翻译：基于聚丙烯酸（盐）和用于生产吸水性树脂
公开(公告)号：EP2471845A1
公开(公告)日：2012-07-04
申请号：EP10812023.9
申请日：2010-08-27
申请人： Nippon Shokubai Co., Ltd.
发明人： NOGI, Kozo , ISHIZAKI, Kunihiko , KONISHI, Kazumasa
IPC分类号： C08J3/24 , C08J3/12
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：本发明提供一种用于生产吸水性树脂的方法，与它能够有效和廉价地获得具有优异的材料性质的表面交联的吸水性树脂，同时确保高的生产率。在连续生产放大到大规模（特别是1吨/小时以上），物理性能得到改善，并且稳定（例如，在物理性能的标准偏差的降低）通过表面交联处理つweiterer提高吸收对压力（AAP）和食盐水导流性（SFC）。用于制备聚丙烯酸的方法（盐）系吸水性树脂包括加入表面交联剂之后，其中，表面处理工序，交联反应是在具有搅拌装置的横式连续搅拌装置包括一个进料口传导和吸水性树脂和一种或搅拌盘，和加热装置，在3-15·W·小时/千克的装置的搅拌功率指数的多个具有多个旋转轴的一排出口。搅拌 - 装置的功率指数=功耗在时间表面处理 - 功耗怠速×平均滞留时间）的每单位时间/治疗量×平均滞留时间的时间

6. 发明公开

EP2471843A1 POLYACRYLIC ACID (SALT) WATER ABSORBENT RESIN AND METHOD FOR PRODUCING SAME 有权
标题翻译： VERFAHREN ZU HERSTELLUNG VON WASSERABSORBIERENDES HARZ AUF BASIS VONPOLYACRYLSÄURE（SALZ）
公开(公告)号：EP2471843A1
公开(公告)日：2012-07-04
申请号：EP10812020.5
申请日：2010-08-27
申请人： Nippon Shokubai Co., Ltd.
发明人： NOGI, Kozo , ISHIZAKI, Kunihiko , WADA, Katsuyuki
IPC分类号： C08J3/24 , C08J3/12
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：公开了一种吸水性树脂的制造方法，通过该方法能够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，抗压吸收（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; 干燥由此获得的颗粒状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; 以及在表面交联后冷却的步骤。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是表面加热用的加热装置的内部面积的0.25〜0.95倍，交联步骤。

7. 发明公开

EP2338918A1 WATER-ABSORBENT RESIN MANUFACTURING METHOD AND LIQUID PERMEABILITY IMPROVEMENT METHOD 有权
标题翻译：用于生产吸水和方法，从而加快液体传动
公开(公告)号：EP2338918A1
公开(公告)日：2011-06-29
申请号：EP09814539.4
申请日：2009-09-11
申请人： Nippon Shokubai Co., Ltd.
发明人： DAIROKU, Yorimichi , NOGI, Kozo , KANZAKI, Syuji , ISHIZAKI, Kunihiko , MATSUMOTO, Koji , MITSUKAMI, Yoshiro
IPC分类号： C08F6/00 , C08F8/00 , C08F20/06
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：一种用于生产吸水性树脂的方法是通过简单和方便的方法来提供，其允许增强和财产稳定，例如，液体渗透性，吸水树脂，而不需要原料或昂贵的设备的变化投资。该方法包括在丙烯酸（或其盐）的溶液wässrige聚合得到的水凝胶交联聚合物的聚合工序; 用于干燥所述水凝胶交联聚合物，得到吸水性树脂粉末的干燥工序; 为吸水性树脂粉末分级的分级工序; 和用于表面交联的吸水性树脂粉末之前或分级工序后，worin电的表面交联工序在分类步骤被消除。

8. 发明公开

EP1592750A1 PARTICULATE WATER ABSORBENT CONTAINING WATER ABSORBENT RESIN AS A MAIN COMPONENT 有权
标题翻译： WITH吸水性树脂为主要成分的颗粒吸水
公开(公告)号：EP1592750A1
公开(公告)日：2005-11-09
申请号：EP04709354.7
申请日：2004-02-09
申请人： NIPPON SHOKUBAI CO., LTD.
发明人： ADACHI, Yoshifumi , KITANO, Takahiro , FUJIMARU, Hirotama , NOGI, Kozo
IPC分类号： C08L101/00 , A61L15/24 , B01J20/26
CPC分类号： C08J3/12 , A61L15/60 , B01J20/26 , B01J20/261 , B01J20/267 , B01J20/28016 , B01J2220/68 , C08J2300/14 , C08J2333/00 , Y10T428/254 , Y10T428/2982
摘要： The particulate water absorbent has a cross-linking structure therein, and contains (i) a particulate water absorbent resin having a cross-linking structure on a surface therof and (ii) not less than 0.001 mass % and less than 10 mass % of an organic acid multivalent metal salt whose molecule contains not less than seven carbon atoms. Futher, the particulate water absorbent contains 90 mass % of particles, whose particle diameter is not less than 106µm and 850µm, with respect to the particulate water absorbent.

9. 发明授权

EP2548911B1 METHOD OF PRODUCING ABSORBENT RESIN 有权
公开(公告)号：EP2548911B1
公开(公告)日：2020-03-04
申请号：EP11756405.4
申请日：2011-03-17
申请人： Nippon Shokubai Co., Ltd.
发明人： OKUDA, Sumio , KANZAKI, Syuji , ISHIZAKI, Kunihiko , FUJINO, Shinichi , NOGI, Kozo
IPC分类号： C08J3/12 , B01J20/26 , C08F20/06 , B07B1/46 , C08J3/24 , C08F6/00 , B07B1/56 , B07B1/28 , B07B9/00 , C08J3/075 , C08F120/06 , C08F220/06

10. 发明授权

EP2548910B1 METHOD OF PRODUCING ABSORBENT RESIN 有权
公开(公告)号：EP2548910B1
公开(公告)日：2020-02-12
申请号：EP11756400.5
申请日：2011-03-17
申请人： Nippon Shokubai Co., Ltd.
发明人： OKUDA, Sumio , KANZAKI, Syuji , ISHIZAKI, Kunihiko , FUJINO, Shinichi , NOGI, Kozo
IPC分类号： C08J3/12 , B01J20/26 , C08F20/06 , B07B1/46 , C08J3/24 , C08F6/00 , B07B1/56 , B07B1/28 , B07B9/00 , C08J3/075 , C08F120/06 , C08F220/06

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