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1. 发明公开

EP3932541A1 WATER ABSORBING AGENT, AND WATER ABSORBENT CORE USING THE AGENT 审中-公开
公开(公告)号：EP3932541A1
公开(公告)日：2022-01-05
申请号：EP21192655.5
申请日：2007-03-20
申请人： Nippon Shokubai Co., Ltd.
发明人： TORII, Kazushi , SHIBATA, Hirofumi , KIMURA, Kazuki , NAKASHIMA, Yasuhisa , IMURA, Motohiro , UEDA, Hiroko , WADA, Katsuyuki
IPC分类号： B01J20/26 , A61F13/15 , A61F13/49 , A61F13/53 , B01J20/30 , C08K3/00 , C08K5/00 , C08L101/14 , C08K3/36
摘要： A water absorbing agent of the present invention has an internal crosslinking structure obtained by polymerization of a water-soluble unsaturated monomer. The agent satisfies conditions (a) to (d): (a) the agent contains water-insoluble inorganic particles at an amount of from 10 ppm to 1,900 ppm inclusive; (b) the agent contains 5 mass % or less particles which have such a size that they can pass through a sieve having a mesh opening size of 150 µm; (c) the agent has an absorbency against a pressure of 4.83 kPa (AAP) of 18 g/g or more; and (d) the water-insoluble inorganic particles reside on a surface of the water absorbing resin or near the surface.

2. 发明公开

EP3228636A1 METHOD FOR MANUFACTURING SUPER ABSORBENT POLYMER 有权
标题翻译：制备超吸收性聚合物的方法
公开(公告)号：EP3228636A1
公开(公告)日：2017-10-11
申请号：EP15864875.8
申请日：2015-12-03
申请人： Nippon Shokubai Co., Ltd.
发明人： IMURA, Motohiro , FUJINO Shin-ichi , WAKABAYASHI Ryota , NOGI Kozo , HONDA Koji , KATADA Yoshiki , KADONAGA Kenji
IPC分类号： C08F2/14
CPC分类号： C08F120/06 , B01J19/1812 , B01J2219/24 , C08F2/14 , C08F20/06 , C08F2810/20 , C08J3/245 , C08J2333/02 , C08L33/02 , C08F220/06 , C08F2222/1013
摘要： [Object] To provide a method for stably producing a water-absorbent resin in powder form or particle form, which has excellent physical properties such as water absorption performance and the like, without any production trouble.
[Solution] A method for producing a water-absorbent resin includes mixing a monomer composition, which contains at least a monomer and a pyrolytic polymerization initiator, with an organic solvent, a temperature of the organic solvent is not lower than 70°C at time of mixing, and when a mass per unit time of the monomer in the monomer composition to be mixed with the organic solvent is expressed as an amount per unit volume of the organic solvent, a lower limit is 0.01 g/ml/min, and an upper limit is 0.2 g/ml/min.
摘要翻译：本发明的目的在于提供一种稳定地制造吸水性能等物性优异的粉末状或颗粒状的吸水性树脂而不产生制造上的问题的方法。用于制备吸水性树脂的方法包括将至少包含单体和热解聚合引发剂的单体组合物与有机溶剂混合，有机溶剂的温度在不低于70℃的时间混合的单体组合物中单体组合物中的单体的质量以有机溶剂的每单位体积的量表示时，下限为0.01g / ml /分钟，上限为0.2g / ml / min。

3. 发明公开

EP2927266A1 POLYACRYLATE SUPER-ABSORBENT POLYMER AND MANUFACTURING METHOD THEREFOR 有权
标题翻译：超声波聚合物聚合物
公开(公告)号：EP2927266A1
公开(公告)日：2015-10-07
申请号：EP13860396.4
申请日：2013-12-03
申请人： Nippon Shokubai Co., Ltd.
发明人： WADA, Hidenori , IMURA, Motohiro , WADA, Katsuyuki , KATO, Seiji
IPC分类号： C08J3/24
摘要： As a method for producing a polyacrylic acid (salt)-based water absorbent resin particle which less generates fine powder and has an excellent impact resistance and a high moisture content even in a case where the polyacrylic acid (salt)-based water absorbent resin particle is produced on a large scale, employed is a production method including the steps of: (a) adding a surface crosslinking agent solution to water absorbent resin powder to obtain a mixture; (b) reacting the mixture; and, thereafter (c) adding an aqueous liquid to at least one selected from the group consisting of (i) the water absorbent resin powder during the step (b) and (ii) the water absorbent resin powder after the step (b), an atmospheric dew point being not lower than 20°C in the step (c), and a temperature of the water absorbent resin powder being higher than the atmospheric dew point in the step (c).
摘要翻译：作为制造聚丙烯酸（盐）系吸水性树脂粒子的方法，其即使在聚丙烯酸（盐）系吸水性树脂粒子的情况下也较少产生细粉而具有优异的耐冲击性和高水分含量是一种生产方法，包括以下步骤：（a）将表面交联剂溶液加入到吸水性树脂粉末中以获得混合物; （b）使混合物反应; （c）在步骤（b）和（ⅱ）步骤（b）之后的吸水性树脂粉末中，选自（i）吸水性树脂粉末中的至少一种水性液体，步骤（c）中的常压露点不低于20℃，并且步骤（c）中的吸水性树脂粉末的温度高于大气露点。

4. 发明授权

EP2927266B1 POLYACRYLATE SUPER-ABSORBENT POLYMER AND MANUFACTURING METHOD THEREFOR 有权
公开(公告)号：EP2927266B1
公开(公告)日：2020-08-05
申请号：EP13860396.4
申请日：2013-12-03
申请人： Nippon Shokubai Co., Ltd.
发明人： WADA, Hidenori , IMURA, Motohiro , WADA, Katsuyuki , KATO, Seiji
IPC分类号： C08J3/24 , A61L15/24 , A61L15/42 , A61L15/60

5. 发明授权

EP1784443B1 WATER ABSORBENT MATERIAL, METHOD FOR PRODUCTION OF SURFACE CROSS-LINKED WATER ABSORBENT RESIN, AND METHOD FOR EVALUATION OF WATER ABSORBENT MATERIAL 有权
标题翻译：水吸收材料，用于生产表面交联的吸水性树脂AND METHOD FOR计算吸水材料
公开(公告)号：EP1784443B1
公开(公告)日：2015-04-22
申请号：EP05782161.3
申请日：2005-08-31
申请人： Nippon Shokubai Co.,Ltd.
发明人： SASABE, Masazumi , KADONAGA, Kenji , SAKAMOTO, Shigeru , IMURA, Motohiro , UENO, Tsunemasa , UEDA, Hiroko , ADACHI, Yoshifumi
IPC分类号： C08J3/24 , C08L101/14 , G01N27/68
CPC分类号： C08J3/248 , C08J3/243 , C08J2300/14 , Y10T428/254 , Y10T428/2982

6. 发明公开

EP1796831A1 PARTICULATE WATER-ABSORBING AGENT WITH WATER-ABSORBING RESIN AS MAIN COMPONENT, METHOD FOR PRODUCTION OF THE SAME, AND ABSORBING ARTICLE 失效
标题翻译：微粒水AGENTS吸水性树脂为主要成分，工艺用于生产和吸收性物品
公开(公告)号：EP1796831A1
公开(公告)日：2007-06-20
申请号：EP05780289.4
申请日：2005-08-05
申请人： Nippon Shokubai Co.,Ltd.
发明人： WADA, Katsuyuki , UEDA, Hiroko , KANTO, Teruyuki , ISHIZAKI, Kunihiko , IMURA, Motohiro
IPC分类号： B01J20/26 , B01J20/30 , A61F13/15 , A61F13/53
摘要： Reversed phase suspension polymerization is allowed while controlling content of minor components in monomer, particularly controlling a content of acetic acid and propionic acid being not higher than 500 ppm, controlling a content of acrylic acid dimer being not higher than 1000 ppm, in acrylic acid. Cross-linked polymer obtained by the polymerization is subjected to a surface crosslinking treatment without substantially using an organic solvent, and under heating at high temperature (150° C. or higher and 250° C. or lower). Thereafter, agglomeration is carried out without substantially using an organic solvent. Accordingly, a particulate water-absorbing agent including a water-absorbing resin having superior property, and being suited for practical applications at high concentrations in absorbing cores such as a diaper and the like without generation of any odor of the organic solvent can be obtained because no volatile organic compound is included.

7. 发明公开

EP1784443A1 WATER ABSORBENT MATERIAL, METHOD FOR PRODUCTION OF SURFACE CROSS-LINKED WATER ABSORBENT RESIN, AND METHOD FOR EVALUATION OF WATER ABSORBENT MATERIAL 有权
标题翻译：水吸收材料，用于生产表面交联的吸水性树脂AND METHOD FOR计算吸水材料
公开(公告)号：EP1784443A1
公开(公告)日：2007-05-16
申请号：EP05782161.3
申请日：2005-08-31
申请人： Nippon Shokubai Co.,Ltd.
发明人： SASABE, Masazumi , KADONAGA, Kenji , SAKAMOTO, Shigeru , IMURA, Motohiro , UENO, Tsunemasa , UEDA, Hiroko , ADACHI, Yoshifumi
IPC分类号： C08J3/24 , C08L101/14 , G01N27/68
CPC分类号： C08J3/248 , C08J3/243 , C08J2300/14 , Y10T428/254 , Y10T428/2982
摘要： A homogeneously surface cross-linked water absorbent resin and a method for the production thereof are provided. The water absorbent material is formed of a surface cross-linked water absorbent resin resulting from granular irregularly pulverized shaped surface cross-linking the product of partial neutralization or whole neutralization of a water absorbent resin having acrylic acid or a metal salt thereof as a main component, which water absorbent material shows a metal atom concentration on the surface of the water absorbent material in the range of 0 - 10% within 0 second of polishing and 2-35% at 10 seconds value of polishing as determined by subjecting the water absorbent material to Ar ion discharge polishing under a voltage of 500 ?. The surface cross-linked water absorbent resin to be used herein can be produced by surface cross-linking a water absorbent resin having a specific particle diameter with a surface cross-linking agent having a water concentration in a specific range.

8. 发明公开

EP1473010A1 ABSORPTIVE MATERIAL, METHOD FOR PRODUCING THE SAME AND ABSORPTIVE ARTICLE USING THE SAME 审中-公开
标题翻译：吸收剂材料，VERFAHREN ZU HERSTELLUNG DESSEN UND DIESES VERWENDENDER ABSORBIERENDER ARTIKEL
公开(公告)号：EP1473010A1
公开(公告)日：2004-11-03
申请号：EP03703028.5
申请日：2003-01-23
申请人： Nippon Shokubai Co., Ltd.
发明人： NAGASUNA, Kinya , IMURA, Motohiro , KADONAGA, Kenji , INOUE, Hiroki , SASABE, Masazumi , MINAMI, Kenji
IPC分类号： A61F13/53
CPC分类号： A61F13/53 , A61F13/539 , A61F2013/530708 , A61F2013/530729 , A61F2013/530744 , A61F2013/530788 , A61F2013/53908 , A61L15/58 , Y10T428/13 , Y10T428/28 , Y10T442/2738
摘要： An object of the present invention is to provide an absorbent structure, its production process, and an absorbent article comprising the absorbent structure, wherein, in the absorbent structure, a water-absorbent resin is fixed, and the restrictions, due to this fixation, on the swelling are small, and the absorbent structure is excellent in absorption properties and usable favorably for thin type absorbent articles in which the water-absorbent resin is used in an increased amount. As a means of achieving this object, the absorbent structure according to the present invention comprises a base material, a water-absorbent resin layer, and a hot-melt adhesive, wherein the water-absorbent resin layer includes a water-absorbent resin as an essential material and is fixed to the base material with the hot-melt adhesive; with the absorbent structure being characterized by: being a multi-layered structure including at least the following three layers: a layer of the base material; the water-absorbent resin layer; and the hot-melt adhesive; and displaying an average space ratio of 30 to 70 % and an average space radius of 100 to 300 µm during saturation-swelling without load.
摘要翻译：本发明的目的在于提供一种吸收性结构体及其制造方法以及吸收性物品，其特征在于，在吸收性结构体中固定有吸水性树脂，由于该固定，溶胀小，吸收结构吸收性优异，对吸水性树脂的使用量增加的薄型吸收性物品有利。作为实现该目的的手段，本发明的吸收性结构体包括基材，吸水性树脂层和热熔粘合剂，其中吸水性树脂层包括作为吸水性树脂的吸水性树脂使用热熔胶固定在基材上; 吸收结构的特征在于：作为至少包括以下三层的多层结构：基材层; 吸水性树脂层; 和热熔胶; 在负载饱和溶胀时，平均空间比为30〜70％，平均空间半径为100〜300μm。

9. 发明授权

EP1796831B1 METHOD FOR PRODUCTION OF A PARTICULATE WATER-ABSORBING AGENT, CORRESPONDING PARTICULATE WATER-ABSORBING AGENT, AND ABSORBING ARTICLE 失效
公开(公告)号：EP1796831B1
公开(公告)日：2020-01-15
申请号：EP05780289.4
申请日：2005-08-05
申请人： Nippon Shokubai Co.,Ltd.
发明人： WADA, Katsuyuki , UEDA, Hiroko , KANTO, Teruyuki , ISHIZAKI, Kunihiko , IMURA, Motohiro
IPC分类号： B01J20/26 , B01J20/30 , A61L15/60 , A61F13/15 , A61F13/53

10. 发明授权

EP1594557B1 WATER-ABSORBENT RESIN COMPOSITION AND ITS PRODUCTION PROCESS 有权
公开(公告)号：EP1594557B1
公开(公告)日：2019-05-01
申请号：EP04708891.9
申请日：2004-02-06
申请人： NIPPON SHOKUBAI CO., LTD.
发明人： TORII, Kazushi , MITSUKAMI, Yoshiro , IMURA, Motohiro , IWAMURA, Taku , KITAYAMA, Toshimasa , KADONAGA, Kenji , INOUE, Hiroki , MIYAKE, Koji , NOGI, Kozo , NAKAMURA, Masatoshi , SAKAMOTO, Shigeru , MACHIDA, Sayaka
IPC分类号： A61L15/60

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