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1. 发明申请

WO2007037522A1 WATER-ABSORBENT AGENT COMPOSITION AND METHOD FOR MANUFACTURING SAME 审中-公开
标题翻译：吸水剂组合物及其制造方法
公开(公告)号：WO2007037522A1
公开(公告)日：2007-04-05
申请号：PCT/JP2006/319923
申请日：2006-09-28
申请人： NIPPON SHOKUBAI Co., Ltd. , KIMURA, Kazuki , IKEUCHI, Hiroyuki
发明人： KIMURA, Kazuki , IKEUCHI, Hiroyuki
IPC分类号： C08L33/02 , C08K3/36 , C08K5/00
CPC分类号： C08J3/245 , C08J2300/14 , C08J2333/02 , C08K3/36 , C08L33/02 , C08L2312/00 , C08L2666/02
摘要： A subject invention provides a water-absorbent agent composition superior in both liquid permeability and liquid updrawing property, which are conventionally incompatible. Moreover, the water-absorbent agent composition according to the present invention causes less decrease in liquid updrawing property. The water-absorbent agent composition according to the present invention contains as a main component a polycarboxylic acid water-absorbent agent having a crosslinking structure which is produced by polymerizing an acid-group-containing unsaturated monomer, the water-absorbent agent composition containing water-insoluble organic or inorganic fine particles, the water-absorbent agent composition satisfying the following set of conditions (a) through (e): (a) decreasing rate of a liquid distribution velocity (LDV) is not more than 30%; (b) saline flow conductivity (SFC) is not less than 60 (Unit: 10 -7 cm 3 s/g); (c) mass average particle diameter (D50) is 200 to 420 m; (d) logarithm standard deviation (σζ ) of particle size distribution is 0.25 to 0.40; and (e) percentage of particles less than 150 μm in diameter is not more than 3 mass % with respect to the whole particle amount.
摘要翻译：本发明提供了一种传统上不相容的液体渗透性和液体上翘性均优异的吸水剂组合物。此外，根据本发明的吸水剂组合物引起液体上翘性能的降低较少。本发明的吸水剂组合物含有具有交联结构的聚羧酸类吸水剂作为主要组分，所述聚羧酸类吸水剂通过聚合含酸基的不饱和单体而制得，所述吸水剂组合物包含水溶性聚合物，（a）至（e）的条件组成的吸水剂组合物：（a）液体分布速度（LDV）的降低率不大于30％; （b）盐水导流率（SFC）不小于60（单位：10 -7 cm 3 s / g）; （c）质量平均粒径（D50）为200〜420μm，（d）粒度分布的对数标准偏差（σζ）为0.25至0.40; 和（e）相对于全部颗粒量，直径小于150μm的颗粒的百分比不大于3质量％。

2. 发明申请

WO2006088115A1 WATER ABSORBING AGENT, WATER ABSORBING ARTICLE AND METHOD FOR PRODUCTION OF WATER ABSORBING AGENT 审中-公开
标题翻译：吸水剂，吸水剂及其吸水剂的生产方法
公开(公告)号：WO2006088115A1
公开(公告)日：2006-08-24
申请号：PCT/JP2006/302782
申请日：2006-02-10
申请人： NIPPON SHOKUBAI CO., LTD. , KIMURA, Kazuki , FUJINO, Shin-ichi , WADA, Katsuyuki , ISHIZAKI, Kunihiko
发明人： KIMURA, Kazuki , FUJINO, Shin-ichi , WADA, Katsuyuki , ISHIZAKI, Kunihiko
IPC分类号： C08J3/12
CPC分类号： A61L15/60 , B01J20/26 , B01J20/264 , B01J20/267 , B01J20/28004 , B01J20/2803 , B01J20/28047 , B01J20/30 , B01J20/3028 , B01J2220/68 , C08J3/245 , C08J2300/14 , Y10T428/2982 , Y10T428/2991 , Y10T428/2998
摘要： An object of the present invention is to provide a water absorbing agent having a low amount of residual monomer, small variance of the amount of residual monomer among ranges of particle size distribution and favorable absorption properties, and being sanitary; an absorbing article; and a method for the production of a water absorbing agent. The water absorbing agent of the present invention has the amount of residual monomer of not higher than 500 ppm, and a residual monomer index of not greater than 0.30.The method for the production includes a first step of obtaining a hydrogel polymer by polymerizing an aqueous solution of a monomer including an unsaturated carboxylic acid and/or a salt thereof in the presence of a crosslinking agent;a second step of obtaining a water absorbent resin precursor which is in powder form and includes particles having a particle size of 300 to 850 µm and particles having a particle size of smaller than 300 µm as main components by drying said hydrogel polymer followed by pulverization and classification to adjust the particle size distribution,a third step of obtaining a water absorbent resin by heating a mixture of said water absorbent resin precursor and a surface crosslinking agent, which can form an ester bond around the surface of said water absorbent resin precursor,a fourth step of adding by spraying an aqueous solution that includes a sulfur-containing reducing agent to said water absorbent resin, and a fifth step of subjecting the mixture of the water absorbent resin and said aqueous solution to a heat treatment under an airflow of not lower than 40°C but not higher than 120°C.
摘要翻译：本发明的目的是提供一种具有少量残留单体的吸水剂，在粒度分布范围和吸收性能良好之间的残留单体量的变化小，并且是卫生的; 吸收物品和吸水剂的制造方法。本发明的吸水剂的残留单体的量不高于500ppm，残留单体指数不大于0.30。制备方法包括通过聚合水性聚合物获得水凝胶聚合物的第一步骤包含不饱和羧酸和/或其盐的单体在交联剂存在下的溶液;第二步，获得粉末形式的吸水性树脂前体，并且包括粒度为300至850μm的颗粒粒径小于300μm的颗粒作为主要组分，通过干燥所述水凝胶聚合物，然后粉碎和分级以调节粒度分布;第三步骤，通过加热所述吸水性树脂前体的混合物获得吸水性树脂以及可在所述吸水性树脂前体的表面周围形成酯键的表面交联剂，第四步骤通过将包含含硫还原剂的水溶液喷雾到所述吸水性树脂中而添加，第五步是在吸水性树脂和所述水溶液的混合物在不低于40°的气流下进行热处理但不高于120℃。

3. 发明申请

WO2007116777A1 WATER ABSORBING AGENT, WATER ABSORBENT CORE USING THE AGENT, AND MANUFACTURING METHOD FOR WATER ABSORBING AGENT 审中-公开
标题翻译：吸水剂，使用该水剂的吸水芯，以及吸水剂的制造方法
公开(公告)号：WO2007116777A1
公开(公告)日：2007-10-18
申请号：PCT/JP2007/056527
申请日：2007-03-20
申请人： NIPPON SHOKUBAI Co., Ltd. , TORII, Kazushi , SHIBATA, Hirofumi , KIMURA, Kazuki , NAKASHIMA, Yasuhisa , IMURA, Motohiro , UEDA, Hiroko , WADA, Katsuyuki
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
CPC分类号： A61L15/60 , A61L15/18 , B01J20/103 , B01J20/26 , B01J20/261 , B01J20/267 , B01J2220/46 , B01J2220/68 , C08K3/36 , C08L101/14 , Y10T428/253
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.
摘要翻译：本发明的吸水剂具有通过聚合水溶性不饱和单体获得的内部交联结构。该试剂满足条件（a）至（d）：（a）该试剂含有量为10ppm至1,900ppm的水不溶性无机颗粒; （b）该试剂含有5质量％以下的粒径，使其能够通过网孔大小为150μm的筛子; （c）该试剂具有抗张力为4.83kPa（AAP）的吸光度为18g / g以上; 和（d）水不溶性无机颗粒驻留在吸水树脂的表面上或表面附近。

4. 发明申请

WO2006033477A1 PARTICULATE WATER-ABSORBING AGENT CONTAINING WATER-ABSORBENT RESIN AS A MAIN COMPONENT 审中-公开
标题翻译：含有吸水树脂的颗粒吸水剂作为主要成分
公开(公告)号：WO2006033477A1
公开(公告)日：2006-03-30
申请号：PCT/JP2005/018073
申请日：2005-09-22
申请人： NIPPON SHOKUBAI Co., Ltd. , WADA, Katsuyuki , UEDA, Hiroko , KIMURA, Kazuki , ISHIZAKI, Kunihiko
发明人： WADA, Katsuyuki , UEDA, Hiroko , KIMURA, Kazuki , ISHIZAKI, Kunihiko
IPC分类号： C08J3/24 , A61L15/60 , C08L101/14
CPC分类号： C08J3/24 , A61L15/46 , A61L15/60 , A61L2300/30 , A61L2300/404 , A61L2300/802 , C08J2300/14 , Y10T428/24893 , Y10T428/24942 , Y10T428/2982 , Y10T442/653
摘要： A problem to be solved of the present invention is to provide a particulate water-absorbing agent which not only ensures the many conventional physical properties (absorption rate, centrifuge retention capacity, absorbency against pressure, particle size distribution etc.) but also prevents odor which is generated after the resin is swollen by absorption. The water absorbent agent of the present invention therefore does not cause odor in actual use. As a result of intensive study of the foregoing problem, the present invention offers a way of controlling a specific odor component, which is generated from impurities and/or by-product derived from the raw material, after the high temperature process. In this way, the present invention successfully provides a water absorbent agent not causing odor after the resin is swollen by absorption.
摘要翻译：本发明要解决的问题是提供一种颗粒状吸水剂，其不仅确保了许多常规物理性质（吸收速率，离心保留能力，耐压吸收性，粒度分布等），而且还防止了气味在树脂通过吸收溶胀后产生。因此，本发明的吸水剂在实际使用中不会产生气味。通过深入研究上述问题，本发明提供一种在高温处理之后控制由原料衍生的杂质和/或副产物产生的特定气味成分的方法。以这种方式，本发明成功地提供了在树脂通过吸收溶胀而不产生气味的吸水剂。

5. 发明申请

WO2005092956A1 PARTICULATE WATER ABSORBING AGENT WITH WATER-ABSORBING RESIN AS MAIN COMPONENT 审中-公开
标题翻译：具有吸水树脂作为主要成分的颗粒状吸水剂
公开(公告)号：WO2005092956A1
公开(公告)日：2005-10-06
申请号：PCT/JP2005/006570
申请日：2005-03-29
申请人： NIPPON SHOKUBAI CO., LTD. , WADA, Katsuyuki , KIMURA, Kazuki , UEDA, Hiroko , KANTO, Teruyuki , FUJIMARU, Hirotama
发明人： WADA, Katsuyuki , KIMURA, Kazuki , UEDA, Hiroko , KANTO, Teruyuki , FUJIMARU, Hirotama
IPC分类号： C08J3/12
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 water absorbing agent which maintains excellent water absorbing properties for a long time, even when urine composition of human urine varies depending. A particulate water absorbing agent comprising a water-absorbing resin obtained by crosslinking polymerization of an unsaturated monomer, which exhibits Centrifuge retention capacity in a physiological saline solution of not lower than 32 g/g, mass median particle size (D50) of 200 to 400 µm, ratio of particles with diameter of smaller than 150 µm of 0 to 2% by weight, and increased extractables by deterioration of 0 to 15% by weight.
摘要翻译：本发明提供一种长时间保持优异的吸水性的吸水剂，即使在尿液的尿组成变化的情况下也是如此。一种颗粒状吸水剂，其特征在于，含有通过使不饱和单体交联聚合得到的吸水性树脂，其在生理盐水溶液中的离心保持容量为32g / g以上，质量中值粒径（D50）为200〜400 μm，直径小于150μm的颗粒的比例为0至2重量％，并且通过劣化0至15重量％的增加的可萃取物。

6. 发明申请

WO2004099265A1 WATER-ABSORBENT RESIN AND ITS PRODUCTION PROCESS 审中-公开
标题翻译：吸水树脂及其生产工艺
公开(公告)号：WO2004099265A1
公开(公告)日：2004-11-18
申请号：PCT/JP2004/006509
申请日：2004-05-07
申请人： NIPPON SHOKUBAI CO. LTD. , WADA, Katsuyuki , NAKAMURA, Masatoshi , KIMURA, Kazuki , ISHIZAKI, Kunihiko
发明人： WADA, Katsuyuki , NAKAMURA, Masatoshi , KIMURA, Kazuki , ISHIZAKI, Kunihiko
IPC分类号： C08F8/00
CPC分类号： C08J3/243 , A61L15/60 , C08F8/00 , C08F2800/20 , C08F2810/20 , C08J3/245 , C08J2300/14 , Y10T428/254 , C08L33/02 , C08F220/04
摘要： Objects of the present invention are: to provided a water-absorbent resin which exhibits excellent balances between water absorption performances; and further to provide a process by which a water- absorbent resin having excellent absorption properties can be produced even if no hydrophilic organic solvent is used, or even if its amount is extremely reduced, when carrying out the surface-crosslinking treatment; and further to provide a water-absorbent resin optimum to absorbent articles such as diapers. As a means of achieving these objects, the process according to the present invention for production of the water-absorbent resin comprises: a step (1) of polymerizing a monomer component including an acid-group-containing unsaturated monomer as an essential component to thereby obtain a hydrogel polymer; a step (2) of drying and pulverizing the hydrogel polymer to thereby obtain a water-absorbent resin power, a step (3) of adding a surface-crosslink-treating agent to the water-absorbent resin powder, wherein the surface-cross-link-treating agent includes a surface-crosslinking agent and water as essential components has a hydrophilic organic solvent content of 0 to 10 mass % relative to the surface-crosslink-treating agent; and a step (4) of heating the resultant mixture to thereby carry out surface-crosslinking treatment, wherein a time of from the end of the step (3) till the beginning of the step (4) is within 5 minutes.
摘要翻译：本发明的目的是提供一种在吸水性能之间显示优异的平衡的吸水性树脂; 并且进一步提供一种在进行表面交联处理时即使没有使用亲水性有机溶剂或甚至其量极少地也可以产生吸收性优异的吸水性树脂的方法; 并且进一步提供对吸收制品如尿布最佳的吸水性树脂。作为实现这些目的的手段，本发明的制造吸水性树脂的方法包括：使包含含酸基的不饱和单体作为必要成分的单体成分聚合的工序（1）获得水凝胶聚合物; 干燥粉碎水凝胶聚合物从而获得吸水性树脂粉末的步骤（2），向吸水性树脂粉末中加入表面交联处理剂的步骤（3），其中，连接处理剂包括表面交联剂和水作为必需组分，亲水性有机溶剂含量相对于表面交联处理剂为0〜10质量％和加热所得混合物进行表面交联处理的步骤（4），其中从步骤（3）结束到步骤（4）开始的时间在5分钟内。

7. 发明公开

EP4105242A1 WATER-ABSORBING RESIN AND MANUFACTURING METHOD FOR SAME 审中-实审
公开(公告)号：EP4105242A1
公开(公告)日：2022-12-21
申请号：EP21752922.1
申请日：2021-02-12
申请人： Nippon Shokubai Co., Ltd.
发明人： NISHIMURA, Kimiaki , TANAKA, Nobuya , ARAI, Tomoya , KIMURA, Kazuki , HORIE, Kazushi , TADA, Kenji
IPC分类号： C08F6/00 , C08J3/12 , C08J3/24 , A61F13/15 , A61F13/53 , B01J20/26 , B01J20/28 , B01J20/30 , B01J20/34
摘要： It is an object to provide a water-absorbing resin that while maintaining water-absorbing resin physical properties such as water absorption performance, has a sufficiently reduced odor produced during swelling. The object is attained by causing the water-absorbing resin to be a water-absorbing resin which is a surface-crosslinked water-absorbing resin, the water-absorbing resin having a volatile component concentration of 3.5 ppm or less as measured when the water-absorbing resin is caused to stand still for 15 minutes under a condition that the water-absorbing resin has a swelling capacity of 1.0-fold.

8. 发明公开

EP4104924A1 ABSORBENT MATERIAL, WATER ABSORBENT AND METHOD FOR PRODUCING WATER ABSORBENT 审中-实审
公开(公告)号：EP4104924A1
公开(公告)日：2022-12-21
申请号：EP21752870.2
申请日：2021-02-12
申请人： Nippon Shokubai Co., Ltd.
发明人： KIMURA, Kazuki , NAKATSURU, Reiko , TAKEDA, Daisuke , FUJII, Yudai
IPC分类号： B01J20/26 , B01J20/28 , B01J20/30 , A61L15/16 , C08F20/06 , C08L33/02
摘要： Provided are: a water-absorbing agent achieving, in a balanced manner, both good physical properties and a decrease in speed of coloration with lapse of time even if the water-absorbing agent has a high moisture absorbing speed due to having a large specific surface area; and an absorbent body having a low ratio of pulp and achieving, in a balanced manner, both good physical properties suitable for a thin disposable diaper and a decrease in speed of coloration with lapse of time. The absorbent body contains a hydrophilic base material and a water-absorbing agent which contains: surface-crosslinked water-absorbing resin particles having a non-uniformly pulverized shape; α-hydroxycarboxylic acid (salt); and an aminocarboxylic acid-based chelating agent and/or a phosphorus-based chelating agent, a point plotted along an x-axis that represents an amount (x 1 mol%) of α-hydroxycarboxylic acid (salt) extracted from the water-absorbing agent and along a y-axis that represents an amount (y 1 mmol%) of an aminocarboxylic acid-based chelating agent and/or a phosphorus-based chelating agent extracted from the water-absorbing agent being within a range that satisfies a specific relational formula of x 1 and y 1 , the water-absorbing agent having a moisture absorbing speed of 120 mg/g/hr or more at a temperature of 40±1°C at a relative humidity of 75±1% RH.

9. 发明公开

EP3984633A1 WATER ABSORBENT AGENT 有权
公开(公告)号：EP3984633A1
公开(公告)日：2022-04-20
申请号：EP21213618.8
申请日：2015-12-28
申请人： Nippon Shokubai Co., Ltd.
发明人： NAKATSURU, Reiko , KIMURA, Kazuki
IPC分类号： B01J20/26 , A61F13/49 , A61F13/53 , A61L15/60 , B01J20/28 , B01J20/30 , A61L15/24
摘要： Provided is a water-absorbing agent which maintains a certain degree of liquid permeability and water absorption speed while also reducing re-wet in a disposable diaper, without the use of costly raw materials or costly apparatuses. The water-absorbing agent of the present invention contains a polyacrylic acid salt-based water-absorbing resin as a main component and has physical properties falling within a specific range, the physical properties being saline flow conductivity (SFC), gap fluid retention property under pressure, and a proportion of particles having a particle diameter of not less than 150 µm and less than 710 pm.

10. 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).

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