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21. 发明公开

EP3978552A1 PRODUCTION METHOD FOR WATER ABSORBENT, AND POLYACRYLIC ACID (SALT) WATER ABSORBENT RESIN 审中-实审
公开(公告)号：EP3978552A1
公开(公告)日：2022-04-06
申请号：EP20815255.3
申请日：2020-04-21
申请人： Nippon Shokubai Co., Ltd.
发明人： ADACHI, Yoshifumi , SHOBO, Yoshihiro , FUJINO, Shin-ichi , WATABE, Hiroyasu , IWAMURA, Taku , MASUDA, Makiko
IPC分类号： C08J3/24 , C07C217/50 , B01J20/26 , B01J20/30
摘要： Provided is a production method that is for a water absorbent which can simultaneously provide satisfactory absorption against pressure (AAP) and gel bed permeability (GBP) without essentially requiring the use of an epoxy crosslinking agent. This water absorbent agent is produced by treating a polyacrylic acid (salt) water absorbent resin with a surface crosslinking agent containing a compound represented by general formula (1) (in general formula (1), B represents a substituent represented by general formula (2) or general formula (3)).

22. 发明公开

EP3795614A1 WATER ABSORBENT RESIN POWDER, AND PRODUCTION METHOD THEREFOR 审中-公开
公开(公告)号：EP3795614A1
公开(公告)日：2021-03-24
申请号：EP19803772.3
申请日：2019-05-16
申请人： Nippon Shokubai Co., Ltd.
发明人： YORINO, Tsuyoshi , KATAKURA, Naoki , HAYASHI, Hiroki , KUMAGAI, Sumito , INOUE, Masahumi , ARAKE, Tomoyuki , SATO, Mai , WAKABAYASHI, Ryota , SHOBO, Yoshihiro , KATSUBE, Shin-ya , ADACHI, Yoshifumi , MATSUMOTO, Satoshi
IPC分类号： C08J3/12
摘要： The present invention addresses the problem of providing: a water absorbent resin powder having a reduced amount of fine powder generated and a reduced amount of fine powder recovered; and a production method for the water absorbent resin. The production method of the present invention includes a drying step and a fine powder granulation step. The drying step is for obtaining a dried polymer by drying a particulate water-containing gel crosslinked polymer which is obtained using an acid group-containing unsaturated monomer as a main component. The fine powder granulation step is for obtaining a fine powder granulated product by adding a binder and an adhesion control agent to a fine powder made of a water absorbent resin. In this production method, the obtained fine powder granulated product is recovered in the drying step or in any step before the drying step.

23. 发明授权

EP2565211B1 POLYACRYLIC ACID (SALT), POLYACRYLIC ACID (SALT)-BASED WATER-ABSORBING RESIN, AND PROCESS FOR PRODUCING SAME 有权
标题翻译：聚丙烯酸（盐），聚丙烯酸（盐）类吸水性树脂及其制造方法
公开(公告)号：EP2565211B1
公开(公告)日：2017-10-25
申请号：EP11775018.2
申请日：2011-04-26
申请人： Nippon Shokubai Co., Ltd.
发明人： MATSUMOTO, Satoshi , MIURA, Yuki , ISHIZAKI, Kunihiko , ADACHI, Yoshifumi
IPC分类号： C08F220/06
CPC分类号： C08F220/06 , B01J20/261 , B01J20/3085

24. 发明授权

EP2190572B1 WATER ABSORBING AGENT AND PRODUCTION METHOD THEREOF 有权
公开(公告)号：EP2190572B1
公开(公告)日：2014-10-22
申请号：EP08833368.7
申请日：2008-09-26
申请人： Nippon Shokubai Co., Ltd.
发明人： TORII, Kazushi , KOBAYASHI, Taishi , ADACHI, Yoshifumi , WATANABE, Yusuke , KITAYAMA, Toshimasa
IPC分类号： B01J20/26 , C08K3/24 , C08K5/09 , C08K13/02 , C08L101/14 , A61F13/49 , A61F13/53 , A61L15/60
CPC分类号： A61L15/60 , B01J20/26 , B01J20/267 , C08K5/09

25. 发明公开

EP2565211A1 POLYACRYLIC ACID (SALT), POLYACRYLIC ACID (SALT)-BASED WATER-ABSORBING RESIN, AND PROCESS FOR PRODUCING SAME 有权
标题翻译：聚丙烯酸（盐），吸水性树脂基于聚丙烯酸（盐）及其制造方法
公开(公告)号：EP2565211A1
公开(公告)日：2013-03-06
申请号：EP11775018.2
申请日：2011-04-26
申请人： Nippon Shokubai Co., Ltd.
发明人： MATSUMOTO, Satoshi , MIURA, Yuki , ISHIZAKI, Kunihiko , ADACHI, Yoshifumi
IPC分类号： C08F20/06 , G01N27/62
CPC分类号： C08F220/06 , B01J20/261 , B01J20/3085
摘要： Provided is a polyacrylic acid (salt), in particular, a polyacrylic acid (salt)-based water-absorbing resin, which contains a method tracer with which the steps which were used for producing the water-absorbing resin can be examined with respect to various troubles that can arise over the water-absorbing resin during the period from the steps for producing the water-absorbing resin to the use and discard thereof by a consumer. The polyacrylic acid (salt)-based water-absorbing resin has a stable carbon isotope ratio, as determined by accelerator mass spectrometry, of less than -20 ‰ and has a radioactive carbon content of 1.0×10 -14 or more. The polyacrylic acid (salt)-based water-absorbing resin is characterized by satisfying the following properties (1) to (6): (1) a CRC of 10 [g/g] or more; (2) an AAP of 20 [g/g] or more; (3) an Ext of 35 wt.% or less; (4) a content of residual monomers of 1,000 ppm or less; (5) a PSD in which the proportion of particles having a particle diameter of 150 µm or larger but less than 850 µm is 90 wt.% or more; and (6) an FSR of 0.15 [g/g/s] or more.
摘要翻译：本发明提供一种聚丙烯酸（盐），特别是聚丙烯酸（盐）系吸水性树脂，其中包含与示踪剂的方法，其被用于哪个用于制造吸水性树脂的步骤可以相对于被检查，以各种麻烦做过程中从步骤期间可能出现在所述吸水性树脂的制造吸水性树脂的使用和由消费者丢弃它们。聚丙烯酸（盐）系吸水性树脂具有稳定的碳同位素比率，通过加速器质谱确定性开采小于-20°€的，并具有1.0×10 -14或更大的放射性碳含量。聚丙烯酸（盐）系吸水性树脂是通过满足下述属性为特征的（1）〜（6）：（1）为10 [克/ g]以上的CRC; （2）20的AAP [克/ g]以上; （3）的35重量％或更少的分机。（4）1000 ppm以下的残留单体的含量; （5）一个PSD，其中，具有150微米或更大但小于850微米的粒径的粒子的比例为90重量％以上。和（6）的00:15 [克/克/秒]或更FSR。

26. 发明公开

EP2192978A1 WATER ABSORBING AGENT AND PRODUCTION METHOD THEREOF 有权
标题翻译：高吸水性及其制造方法
公开(公告)号：EP2192978A1
公开(公告)日：2010-06-09
申请号：EP08833801.7
申请日：2008-09-26
申请人： Nippon Shokubai Co., Ltd.
发明人： ADACHI, Yoshifumi , TORII, Kazushi , WATANABE, Yusuke , KOBAYASHI, Taishi , KITAYAMA, Toshimasa , SUZUKI, Seiichi , YONEDA, Atsuro
IPC分类号： B01J20/26 , C08F8/00 , C08G73/04 , C08L101/12
CPC分类号： C08F8/32 , B01J20/262 , B01J20/267 , C08F220/06 , C08F222/1006 , C08G73/02 , C08K5/09 , C08L33/02 , C08L79/02
摘要： The present invention provides a water absorbing agent, including: water absorbent resin particles; and a modified cationic polymer compound containing a primary amino group and/or a secondary amino group, the modified cationic polymer compound being obtained by reacting, with a modifying agent, a cationic polymer compound containing the primary amino group and/or the secondary amino group, and the modifying agent containing two or more carbon atoms continuously linked, and one reactive group which reacts with the primary amino group and/or the secondary amino group. The present invention further provides a method for producing a water absorbing agent including water absorbent resin particles, the method including the step (i) of mixing the water absorbent resin particles with a modified cationic polymer compound.

27. 发明公开

EP1730218A1 PARTICULATE WATER ABSORBING AGENT WITH IRREGULARLY PULVERIZED SHAPE 无效
标题翻译：具非粉末颗粒吸水
公开(公告)号：EP1730218A1
公开(公告)日：2006-12-13
申请号：EP05721691.3
申请日：2005-03-29
申请人： Nippon Shokubai Co.,Ltd.
发明人： ISHIZAKI, Kunihiko , KITANO, Takahiro , ADACHI, Yoshifumi , UEDA, Hiroko , WADA, Katsuyuki
IPC分类号： C08J3/12 , C08J3/24 , C08L101/14 , A61L15/60
CPC分类号： C08J3/12 , C08J3/245 , C08J2300/14 , Y10T428/249924 , Y10T428/254 , Y10T428/2982 , Y10T428/2991 , Y10T428/2998 , Y10T442/2344
摘要： The present invention provides a particulate water absorbing agent for a thin type absorbing substrate suitable for actual use. A particulate water absorbing agent having irregularly pulverized shape, characterized by comprising, a surface crosslinked water-absorbing resin obtained by crosslinking polymerization of an unsaturated monomer with an acid group and/or salts thereof, which absorbing agent contains agglomerated particles therein and further satisfies (i) centrifuge retention capacity (CRC) in a physiological saline solution of not lower than 32 g/g, (ii) mass median particle size (D50) of 200 to 400 µm, and (iii) particles smaller than 600 µm and not smaller than 150 µm of 95 to 100% by weight. By using the particulate water absorbing agent, such absorbing articles can be obtained as have few rugged surface after water absorption, excellent liquid permeation property.

28. 发明公开

EP1721663A1 PARTICULATE WATER ABSORBING AGENT AND METHOD FOR PRODUCTION THEREOF, AND WATER ABSORBING ARTICLE 有权
标题翻译： TEILCHENFÖRMIGESWASSERABSORPTIONSMITTEL UND HERSTELLUNGSVERFAHRENDAFÜRUND WASSERABSORBIERENDER ARTIKEL
公开(公告)号：EP1721663A1
公开(公告)日：2006-11-15
申请号：EP05709754.5
申请日：2005-02-04
申请人： Nippon Shokubai Co.,Ltd.
发明人： DAIROKU, Yorimichi , ADACHI, Yoshifumi , NOGI, Kozo , INOUE, Hiroki , WADA, Katsuyuki , IRIE, Yoshio
IPC分类号： B01J20/26 , A61F13/53 , A61L15/60 , C08K5/00 , C08L101/14
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的颗粒状吸水剂和95〜100重量％的颗粒状吸水剂，其粒径为小于850μm〜150μm以下，（ ii）粒度分布的对数标准偏差（¶）范围为0.25至0.45，（iii）由下列方程定义的压缩率为0至18％，（iv）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分钟内得到55mN / m以上的压缩率，％= P'A / P×100，其中 P代表一个敲击b 颗粒状吸水剂的密度密度和A表示颗粒状吸水剂的松散体积密度。

29. 发明公开

EP1704771A1 PARTICULATE WATER RETAINING MATERIAL FOR CULTIVATING PLANT HAVING WATER ABSORBENT RESIN AS MAIN COMPONENT 审中-公开
标题翻译：粒子状持水材料PFLANZENZUCHT WITH吸水性树脂为主要成分的
公开(公告)号：EP1704771A1
公开(公告)日：2006-09-27
申请号：EP04801670.3
申请日：2004-12-06
申请人： Nippon Shokubai Co.,Ltd.
发明人： FUJIMARU, Hirotama , DAIROKU, Yorimichi , ISHIZAKI, Kunihiko , ADACHI, Yoshifumi , HARADA, Nobuyuki
IPC分类号： A01G31/00 , C08F220/06 , C08F20/06 , C08F8/42 , C08L33/02
CPC分类号： A01G24/00 , A01G24/35
摘要： A particulate water retaining material for cultivating plant comprising (A) a carboxyl group-containing water-insoluble water absorbent resin and (B) a polyvalent metal compound, by having the compound (B) deposited on the the rerin (A), it is made possible to possess an outstanding water absorbing property without impairing the growth of a plant.
摘要翻译：栽培植物，其包含（A）水不溶性的吸水性树脂和（B）多价金属化合物，由具有沉积在所述rerin（A）的化合物（B）一种含羧基的，它是一种颗粒保水材料成为可能拥有的计划优秀的吸水性而不损害的生长。

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