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1. 发明授权

EP2116572B1 GRANULATED WATER ABSORBENT CONTAINING WATER-ABSORBING RESIN AS THE MAIN COMPONENT 有权
标题翻译： WITH吸水性树脂为主要INGREDIENT颗粒水吸收元件
公开(公告)号：EP2116572B1
公开(公告)日：2016-09-07
申请号：EP08721003.5
申请日：2008-02-28
申请人： Nippon Shokubai Co., Ltd.
发明人： KITANO, Takahiro , KAWANO, Takaaki , WADA, Katsuyuki
IPC分类号： C08L33/02 , B01J20/26 , A61F13/49 , A61F13/53 , A61L15/60 , C08J3/24
CPC分类号： C08F220/06 , A61L15/24 , A61L15/60 , B01J20/267 , B01J20/28019 , C08F222/1006 , C08J3/243 , C08J3/245 , C08J2333/02 , Y10T428/29 , Y10T428/2982 , Y10T428/2991 , Y10T428/2998 , C08L33/08

2. 发明授权

EP2891520B1 PARTICULATE WATER-ABSORBING AGENT AND METHOD FOR MANUFACTURING SAME 有权
公开(公告)号：EP2891520B1
公开(公告)日：2020-02-12
申请号：EP13832678.0
申请日：2013-08-30
申请人： Nippon Shokubai Co., Ltd.
发明人： UEDA, Manabu , KITANO, Takahiro , IKEUCHI, Yoshitaka , IKEUCHI, Hiroyuki , WADA, Katsuyuki
IPC分类号： B01J20/26 , A61F13/49 , A61F13/53 , B01J20/28 , B01J20/30 , C08J3/12 , C08J3/24 , C08K3/00 , C08F220/06

3. 发明公开

EP2471846A1 POLYACRYLIC ACID (SALT) WATER ABSORBENT RESIN AND METHOD 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：EP2471846A1
公开(公告)日：2012-07-04
申请号：EP10812024.7
申请日：2010-08-27
申请人： Nippon Shokubai Co., Ltd.
发明人： KITANO, Takahiro , NOGI, Kozo , ISHIZAKI, Kunihiko
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 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-crosslinldng 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：公开了一种用于生产吸水性树脂，通过该具有优异物理性质的表面交联的吸水性树脂，能够以低成本有效地获得，同时确保高生产率的方法。当生产规模以1吨/ hr以上增大到连续生产，物性得到改善，并且稳定的（例如，物理性能的标准偏差减小）通过表面交联处理，以及对压力的吸收（AAP）和液体渗透性（SFC）进一步提高。具体地说游离缺失盘是用于生产吸水性树脂的方法，所有这些都在做了表面交联剂的连续混合设备的搅拌轴是在表面交联剂的混合步骤中加热为特征的或没有连续混合装置表面crosslinldng剂在压力没有被象在混合装置中的气流中的表面交联剂的混合期间相对于环境压力和气流减少是通过混合装置通过操作是40℃ 或多个（当与在出口处相对于气体温度定义）。

4. 发明公开

EP1641883A1 WATER ABSORBENT RESIN COMPOSTION AND PRODUCTION METHOD THEREOF 有权
标题翻译：吸水性树脂包括成分及其制造方法
公开(公告)号：EP1641883A1
公开(公告)日：2006-04-05
申请号：EP04746711.3
申请日：2004-06-23
申请人： NIPPON SHOKUBAI CO., LTD.
发明人： ADACHI, Yoshifumi , KITANO, Takahiro , FUJINO, Shinichi , WADA, Katsuyuki , TORII, Kazushi , IWAMURA, Taku , MACHIDA, Sayaka
IPC分类号： C08L101/14 , C08K3/10 , A61F13/53 , A61L15/60
CPC分类号： A61L15/60 , A61F2013/530686 , A61F2013/530744
摘要： The production method of a water absorbent resin composition including a particulate water absorbent resin, wherein: 95 wt % or more of particles whose particle diameter is less than 850 µm and not less, than 106 µm are contained, and a weight average particle diameter of the particles is less than 500 µm and not less than 300 µ m and a logarith mic standard deviation (σξ) of a particle size distribution is 0.45 or less, and a water-soluble component of the water absorbent composition is 35 wt % or less, and a multivalent metal component is contained, and an extraction rate of the multivalent metal component is 5.0 wt % or more and less than 100 wt %, thereby providing the water absorbent resin composition, free from any coagulation of particles in high humidity, which has superiror absorbent property in terms of an absorbency and a diffusing absorbency under pressure.

5. 发明公开

EP4299651A1 GRANULAR WATER ABSORBENT, ABSORBENT BODY CONTAINING SAID WATER ABSORBENT, AND ABSORBENT ARTICLE USING SAID ABSORBENT BODY 审中-实审
公开(公告)号：EP4299651A1
公开(公告)日：2024-01-03
申请号：EP22759805.9
申请日：2022-02-25
申请人： Nippon Shokubai Co., Ltd.
发明人： FUJITA, Keisuke , ADACHI, Yoshifumi , YORINO, Tsuyoshi , SATO, Mai , WAKABAYASHI, Ryota , NODA, Atsuhiro , UEDA, Junya , KANEKO, Jumpei , UEDA, Hiroko , TAMAKI, Mariko , NODA, Yuika , KITANO, Takahiro , TORII, Kazushi , IKEUCHI, Hiroyuki
IPC分类号： C08J3/12 , B01J20/26
摘要： Provided is a particulate water absorbent with which an absorbent body having an excellent speed of incorporating liquid and enabling reduction in release amount can be produced.
The particulate water absorbent contains poly(meth)acrylic acid (salt)-based water-absorbing resin particles as a main component, and the particulate water absorbent includes a cavity that is a space connecting to outside and a void that is a closed space not connecting to outside, in which a cavity ratio to a total volume is 10% by volume or more, and a void ratio to a total volume is 0.5% by volume or less.

6. 发明公开

EP3834789A1 WATER ABSORBENT SHEET AND WATER ABSORBENT ARTICLE COMPRISING SAME 审中-实审
公开(公告)号：EP3834789A1
公开(公告)日：2021-06-16
申请号：EP19846609.6
申请日：2019-08-09
申请人： Nippon Shokubai Co., Ltd.
发明人： NODA, Yuika , TORII, Kazushi , UEDA, Hiroko , KITANO, Takahiro , HIRAUCHI, Tatsushi , HORIMOTO, Yuichiro , HIRAOKA, Ryuichi , IKEUCHI, Hiroyuki
IPC分类号： A61F13/53 , A61L15/60 , B01J20/26 , B01J20/28 , C08L101/14
摘要： It is an object of the present invention to provide a novel water-absorbing sheet that can meaningfully reduce the return amount even when introduction of a liquid occurs intermittently for several times (particularly, three or more times) under a situation with no load, and the amount of introduction of the liquid becomes large.
Disclosed is a water-absorbing sheet having a first base material, a second base material, and a water-absorbing layer positioned between the first base material and the second base material, wherein the first base material is a water-permeable sheet positioned on a side where a liquid to be absorbed is introduced, the water-absorbing layer has a first particulate water absorbent localized on a side of asurfaceof the firstbase material, the surface being arranged to face the second base material; and a second particulate water absorbent localized on a side of a surface of the second base material, the surface being arranged to face the first base material, an overall absorption amount of the second particulate water absorbent as represented by the following formula: CRC g / g + 0.44 × AAP 2.1 kPa g / g is 48 g/g or more, and a water absorption time determined according to a vortex method is 35 seconds or more.

7. 发明公开

EP3777803A1 WATER ABSORBENT SHEET, WATER ABSORBENT SHEET PRODUCTION METHOD, AND ABSORBENT ARTICLE 审中-公开
公开(公告)号：EP3777803A1
公开(公告)日：2021-02-17
申请号：EP19785147.0
申请日：2019-04-12
申请人： Nippon Shokubai Co., Ltd.
发明人： TORII, Kazushi , KITANO, Takahiro , NODA, Yuika , HIRAOKA, Ryuichi , HORIMOTO, Yuichiro , WADA, Hidenori , HIRAUCHI, Tatsushi , WADA, Mai
IPC分类号： A61F13/53 , A61F13/15 , A61F13/534
摘要： An embodiment of the present invention provides a water-absorbing sheet which, with respect to urine having a wide range of salt concentrations (mass%) including 0, has a favorable liquid absorption speed and favorable re-wet, and which has good comfortability for users, including infants, whose urine tends to change in salt concentration due to a change in the user's physical condition. In a water-absorbing sheet (10), a first particulate water-absorbing agent (12a) and a second particulate water-absorbing agent (12b) are localized, the first particulate water-absorbing agent (12a) has a gel permeation rate (GPR) which differs by 10 or more from that of the second particulate water-absorbing agent (12b), and the gel permeation rate of the second particulate water-absorbing agent (12b) is 50 or less.

8. 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.

9. 发明公开

EP3521817A1 HYGIENIC MATERIAL, METHOD FOR MEASURING CONTENT OF WATER-ABSORBING RESIN INCLUDED IN ABSORBENT ARTICLE OR INTERMEDIATE PRODUCT IN MANUFACTURING PROCESS THEREOF, AND METHOD FOR MANUFACTURING HYGIENIC MATERIAL OR ABSORBENT ARTICLE USING SAME 审中-公开
公开(公告)号：EP3521817A1
公开(公告)日：2019-08-07
申请号：EP17856478.7
申请日：2017-09-29
申请人： Nippon Shokubai Co., Ltd.
发明人： KIMURA, Kazuki , IWAMURA, Taku , KITANO, Takahiro , WADA, Hidenori , FUJIMOTO, Taku
IPC分类号： G01N27/416 , A61F13/84 , B01J20/26 , G01N31/00 , G01N33/44
摘要： Provided is a convenient, safe, and highly precise method for measuring a content of a water-absorbing resin in a hygienic material or an absorbent article.
In a method for measuring a content of a water-absorbing resin, which has a water-soluble cation in the form of an ion-dissociating group, included in a hygienic material, an absorbent article, or an intermediate product in a manufacturing process thereof,
A) a step for measuring an amount of a predetermined water-soluble cation in a reference sample including a known amount of the water-absorbing resin and creating a calibration curve indicating a relation between the amount of the water-absorbing resin and the amount of the predetermined water-soluble cation in the reference sample on the basis of the obtained measurement result;
B) a step for measuring an amount of the predetermined water-soluble cation in a measurement sample, which includes a portion including the water-absorbing resin, of the hygienic material, the absorbent article, or the intermediate product in the manufacturing process thereof; and
C) a step for calculating an amount of the water-absorbing resin in the measurement sample by the calibration curve created in the step A) from the amount of the predetermined water-soluble cation measured in the step B) are performed. The step A) and the step B) include measuring the amount of the predetermined water-soluble cation using an ion selective electrode method and include the following steps M1) and M2):
M1) a step for immersing a sample in an aqueous solution including a total ionic strength adjusting agent (pre-processing step); and
M2) a step for measuring the amount of the predetermined water-soluble cation in a pre-processed supernatant liquid obtained in the step M1).

10. 发明公开

EP2891520A1 PARTICULATE WATER-ABSORBING AGENT AND METHOD FOR MANUFACTURING SAME 有权
标题翻译：巴黎维多利亚州VERFAHREN ZUR HERSTELLUNG DAVON
公开(公告)号：EP2891520A1
公开(公告)日：2015-07-08
申请号：EP13832678.0
申请日：2013-08-30
申请人： Nippon Shokubai Co., Ltd.
发明人： UEDA, Manabu , KITANO, Takahiro , IKEUCHI, Yoshitaka , IKEUCHI, Hiroyuki , WADA, Katsuyuki
IPC分类号： B01J20/26 , A61F13/49 , A61F13/53 , B01J20/28 , B01J20/30 , C08J3/12 , C08J3/24 , C08K3/00 , C08L33/02
CPC分类号： B01J20/28016 , A61L15/42 , A61L15/60 , B01J20/02 , B01J20/04 , B01J20/041 , B01J20/048 , B01J20/10 , B01J20/103 , B01J20/12 , B01J20/14 , B01J20/18 , B01J20/261 , B01J20/264 , B01J20/267 , B01J20/28004 , B01J20/28011 , B01J20/3021 , B01J20/3085 , B01J2220/68 , C08J3/075 , C08J3/12 , C08J3/245 , C08J2300/14 , C08J2333/02 , C08K3/011 , C08K3/34 , C08K3/36 , C08K2003/3081 , F04C2270/041 , C08L33/02
摘要： A water absorbent resin (water absorbing agent) and method for producing it are provided which improve, in a water absorbent article (in particular, a diaper) including a water absorbent resin as a water absorbing agent, the absolute absorption amount (g), liquid absorbing times (in particular, liquid absorbing times at the second instance and later), re-wet (g), and diffusion distance (%) of the water absorbent article.
A particulate water absorbing agent of the present invention has a CRC, a proportion of particles with sizes of 600 µm to 150 µm as defined through a standard-sieve classification, an SST, and the value of the difference between an FST and the SST each within a predetermined range.
摘要翻译：本发明提供吸水性树脂（吸水剂）及其制造方法，其特征在于，在吸水性树脂作为吸水剂的吸水性物品（特别是尿布）中，绝对吸收量（g），液体吸收时间（特别是第二次以后的液体吸收时间），吸湿性物品的再润湿（g）和扩散距离（％）。本发明的颗粒状吸水剂具有CRC，通过标准筛分类法定义的尺寸为600μm〜150μm的粒子的比例，SST，以及FST与SST之间的差值在预定范围内。

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