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公开(公告)号：EP4089119A1
公开(公告)日：2022-11-16
申请号：EP20912159.9
申请日：2020-12-22
发明人： TAKEDA, Daisuke , NAKATSURU, Reiko , KIKUCHI, Keisuke , ARAI, Tomoya , TADA, Kenji , TANAKA, Nobuya , KIMURA, Kazuki
IPC分类号： C08F8/14 , C08F220/06 , C08F220/28 , A61F13/53 , B01J20/26 , B01J20/28
摘要： Provided is an absorbent body that, for example, in a case where the absorbent body has been used in an absorbent article, such as a thin disposable diaper, having an absorbent body with a low proportion of fiber material (hydrophilic fibers) such as pulp, enables the absorbent article such as a disposable diaper to have an improved liquid trapping function on second and subsequent urinations over the conventional ones and particularly to have an increased amount of liquid trapped under load on the second and subsequent urinations over the conventional ones. Also provided is a water-absorbing resin that is used in the absorbent body and has an increased absorption capacity under load on the second and subsequent urinations over the conventional ones.
The absorbent body includes a water-absorbing resin having a gel expansion force under a load of 4.83 kPa of 26 N or more.-
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
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.
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3.发明公开METHOD FOR MANUFACTURING POLYACRYLIC ACID (POLYACRYLATE)-BASED WATER-ABSORBENT AGENT, AND WATER-ABSORBENT AGENT 审中-公开用于生产吸水性是指基于POLYACRYLSÄULE（聚丙烯酸酯）及高吸水性
公开(公告)号：EP2896645A1
公开(公告)日：2015-07-22
申请号：EP13837534.0
申请日：2013-08-20
摘要： An object of the present invention is to provide a method for producing a water absorbing agent, whereby the ability to produce the water absorbing agent is enhanced or the amount of a residual surface crosslinking agent is reduced (or Anti-Caking property are enhanced) in the production of a water absorbing agent having high physical properties (particularly, high liquid permeability and Anti-Caking property), whereas the surface crosslinking step tends to be a rate-determining step in the current state of the art. In this method for producing a water absorbing agent, an additive selected from a polyvalent metal cation-containing compound, water-insoluble inorganic fine particles, and a cationic polymer compound is used, and surface crosslinking, particularly surface crosslinking with an alkylene carbonate compound, is performed under conditions where a temperature in a heat treatment system is controlled to be in a range from 100 °C to 300 °C, and a dew point in the heat treatment system is controlled to be lower than 45 °C.
摘要翻译： 本发明的一个目的是提供一种用于制造吸水剂的方法，由此产生所述吸水剂的能力被增强的或残留的表面交联剂的量减少（或耐结块性被增强）在 生产具有高物性的吸水剂的（特别是，高液体渗透性和耐结块性），而表面交联工序的倾向在本领域的当前状态的速率决定步骤。 在该方法中用于从含阳离子的多价金属化合物，水不溶性无机细颗粒，和使用阳离子聚合物化合物，和表面交联中选择的吸水剂，在添加剂，特别是表面与亚烷基碳酸酯化合物的交联， 其中，在热处理系统中的温度被控制在范围从100℃至300℃，并且在热处理系统中的露点条件下进行被控制为低于45℃。
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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
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.
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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
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.
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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
发明人： NAKATSURU, Reiko , KIMURA, Kazuki
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.
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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
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).-
公开(公告)号：EP1940948B2
公开(公告)日：2019-01-16
申请号：EP06811261.4
申请日：2006-09-28
发明人： KIMURA, Kazuki , IKEUCHI, Hiroyuki
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9.发明公开
公开(公告)号：EP3910004A1
公开(公告)日：2021-11-17
申请号：EP20738635.0
申请日：2020-01-10
发明人： KIMURA, Kazuki , TAKEDA, Daisuke
摘要： The present invention provides a production method capable of reducing the amount of residual monomer of a water-absorbent resin having a high specific surface area and reducing variations in the amount of residual monomer between water-absorbent resin particles. The production method of the present invention in sum is a method for producing a water absorbent having a water-absorbent resin as a main component, the method including a water-absorbent resin surface crosslinking step and a sulfur-containing reducing agent aqueous solution mixing step, wherein the (1) specific surface area of the water-absorbent resin, (2) average droplet diameter and temperature of the sulfur-containing reducing agent aqueous solution, (3) mixing conditions, and (4) heating and drying conditions are properly controlled.
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10.发明公开WATER ABSORBENT AGENT AND METHOD FOR PRODUCING SAME, EVALUATION METHOD, AND MEASUREMENT METHOD 审中-公开吸水剂及其制造方法，评价方法和测定方法
公开(公告)号：EP3243565A1
公开(公告)日：2017-11-15
申请号：EP15877095.8
申请日：2015-12-28
发明人： NAKATSURU, Reiko , KIMURA, Kazuki
CPC分类号： B01J20/267 , A61F13/49 , A61F13/53 , A61L15/24 , A61L15/60 , B01J20/26 , B01J20/28 , B01J20/28004 , B01J20/30 , B01J20/3021 , B01J20/3085 , G01N5/025
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 µm.
摘要翻译： 本发明提供一种吸水剂，其在不使用昂贵的原材料或昂贵的设备的情况下保持一定程度的液体渗透性和吸水速度，同时还减少一次性尿布中的再湿润。 本发明的吸水剂含有聚丙烯酸盐类吸水性树脂作为主要成分，并且具有落在特定范围内的物理性质，物理性质为盐水导流性（SFC），间隙液体保留性 压力和一定比例的粒径不小于150μm且小于710μm的颗粒。
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