公开(公告)号：US20090036855A1

公开(公告)日：2009-02-05

申请号：US11658879

申请日：2005-08-05

申请人： Katsuyuki Wada ,  Hiroko Ueda ,  Teruyuki Kanto ,  Kunihiko Ishizaki ,  Motohiro Imura

发明人： Katsuyuki Wada ,  Hiroko Ueda ,  Teruyuki Kanto ,  Kunihiko Ishizaki ,  Motohiro Imura

IPC分类号： A61F13/53 ,  B01J20/28

CPC分类号： B01J20/261 ,  A61F13/531 ,  A61F2013/530569 ,  A61F2013/5307 ,  A61F2013/530751 ,  A61L15/60 ,  B01J20/26 ,  B01J20/2803 ,  B01J2220/68 ,  C08F6/18 ,  C08F220/06

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.

摘要翻译： 在丙烯酸​​中控制丙烯酸二聚体的含量控制丙烯酸二聚体的含量不高于500ppm，特别是控制乙酸和丙酸的含量不高于500ppm，同时控制单体中少量成分的含量，进行反相悬浮聚合。 通过聚合得到的交联聚合物基本上不使用有机溶剂进行表面交联处理，并在高温（150℃以上且250℃以下）下加热。 此后，基本上不使用有机溶剂进行附聚。 因此，可以获得包含具有优异性能的吸水性树脂的颗粒状吸水剂，并且可以获得不产生有机溶剂的任何气味的高吸收性芯材如尿布等的实际应用的颗粒状吸水剂，因为 不含挥发性有机化合物。

公开(公告)号：US20070141338A1

公开(公告)日：2007-06-21

申请号：US10588530

申请日：2005-03-29

申请人： Kunihiko Ishizaki ,  Takahiro Kitano ,  Yoshifumi Adachi ,  Hiroko Ueda ,  Katsuyuki Wada

发明人： Kunihiko Ishizaki ,  Takahiro Kitano ,  Yoshifumi Adachi ,  Hiroko Ueda ,  Katsuyuki Wada

IPC分类号： B32B1/00 ,  B01J20/00 ,  B01J20/22 ,  B01J20/26 ,  B32B5/16

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.

摘要翻译： 本发明提供一种适用于实际使用的薄型吸收性基材用颗粒状吸水剂。 具有不规则粉碎形状的颗粒状吸水剂，其特征在于，包含通过使不饱和单体与酸基和/或其盐交联聚合得到的表面交联吸水性树脂，所述吸收剂含有附聚颗粒，并进一步满足（ i）在不低于32g / g的生理盐水溶液中离心保留容量（CRC），（ii）质量中值粒径（D50）为200-400μm，和（iii）小于600μm的颗粒而不是更小的颗粒 95％至100％重量的150mg。 通过使用颗粒状吸水剂，可以获得这样的吸收制品，其吸水后的表面几乎不渗透，液体渗透性优异。

公开(公告)号：US20050221980A1

公开(公告)日：2005-10-06

申请号：US10509000

申请日：2004-02-09

申请人： Yoshifumi Adachi ,  Takahiro Kitano ,  Hirotama Fujimaru ,  Hiroyuki Ikeuchi ,  Katsuyuki Wada

发明人： Yoshifumi Adachi ,  Takahiro Kitano ,  Hirotama Fujimaru ,  Hiroyuki Ikeuchi ,  Katsuyuki Wada

IPC分类号： B01J20/26

CPC分类号： C08F220/06 ,  B01J20/26 ,  B01J20/261 ,  B01J20/267 ,  B01J20/28004 ,  B01J20/28016 ,  C08F222/1006 ,  Y10T428/2998 ,  Y10T428/31855 ,  Y10T428/3188

摘要： A particulate water absorbent contains a water absorbent resin as a main component, the water absorbent resin being a crosslinked polymer of a water-soluble unsaturated monomer. The water absorbent resin is particular in shape and contains particles of a particle size in a range of not less than 106 μm and less than 850 μm in an amount of not less than 90 mass percent with respect to the total mass of the water absorbent resin contained in the particulate water absorbent. The particulate water absorbent has a first salt concentration absorption index of not less than 0.60 as measured by a formula below when ion exchange water is used as an aqueous solution of a constant salt concentration: (salt concentration absorption index)=(absorbency against a pressure of 4.83 kPa with respect to the aqueous solution of a constant salt concentration)/(absorbency against no pressure with respect to the aqueous solution of a constant salt concentration).

摘要翻译： 颗粒状吸水剂含有吸水性树脂作为主要成分，吸水性树脂为水溶性不饱和单体的交联聚合物。 吸水性树脂特别是形状，并且相对于吸水性树脂的总质量，其粒径在不小于106μm和小于850μm的范围内，其量不小于90质量％ 包含在颗粒状吸水剂中。 当使用离子交换水作为恒盐浓度的水溶液时，颗粒状吸水剂的第一盐浓度吸收指数为不低于0.60;（盐浓度吸收指数）=（吸收压力 相对于恒盐浓度的水溶液为4.83kPa）/（相对于恒盐浓度的水溶液的无压吸收性）。

公开(公告)号：US5760080A

公开(公告)日：1998-06-02

申请号：US571960

申请日：1995-12-28

申请人： Katsuyuki Wada ,  Kinya Nagasuna ,  Shin-ichi Fujino ,  Yoshihiko Masuda

发明人： Katsuyuki Wada ,  Kinya Nagasuna ,  Shin-ichi Fujino ,  Yoshihiko Masuda

IPC分类号： A61F13/15 ,  A61L15/60 ,  C08F220/00 ,  C08F220/06 ,  C08F8/32 ,  C08F8/14

CPC分类号： A61F13/53 ,  A61F13/15203 ,  A61L15/60 ,  C08F220/00 ,  C08F220/06

摘要： An absorbing agent has a diffusing absorbency under pressure of not less than 25 g/g when 60 minutes elapsed after absorption is started, and a water-soluble content is above 0 percent by weight and not more than 7 percent by weight. The absorbing agent is prepared by surface-crosslinking a precursor of the absorbing agent obtained by performing an aqueous solution polymerization of a hydrophilic unsaturated monomer having not less than 50 mole percent neutralized acrylic acid as a main component using a specific crosslinking agent having a main component composed of an ester compound of a specific polyhydroxy alcohol and an unsaturated carboxylic acid, and a high-boiling component having at least two alcohol structures in a molecule as a specific ratio. As a result, an absorbing agent having excellent properties such as the diffusing absorbency under pressure is high, the water soluble content is small, and the amount of wet back of the aqueous liquid after a long period of time is small, water absorbency under pressure can be stably maintained for a long period of time can be achieved.

摘要翻译： PCT No.PCT / JP95 / 01150 Sec。 371日期1995年12月28日第 102（e）1995年12月28日PCT PCT 1995年6月9日PCT公布。 第WO95 / 34377号公报 日期1995年12月21日吸收剂在吸收开始60分钟后具有不低于25g / g的压力下的扩散吸收性，并且水溶性成分高于0重量％且不大于7重量％ 重量。 吸收剂是通过使用具有主成分的特定交联剂进行以不少于50摩尔％中和的丙烯酸为主成分的亲水性不饱和单体的水溶液聚合而获得的吸收剂的前体进行表面交联而制备的。 由特定的多羟基醇和不饱和羧酸的酯化合物和分子中具有至少两个醇结构的高沸点组分作为特定比例组成。 结果，具有优异性能的吸收剂如压力下的扩散吸收性高，水溶性量小，长时间后的水性液体的湿润量少，压力下的吸水性 可以长期稳定地维持可以实现。

公开(公告)号：US5382610A

公开(公告)日：1995-01-17

申请号：US144104

申请日：1993-10-27

申请人： Nobuyuki Harada ,  Katsuyuki Wada ,  Hisanori Obara ,  Tadao Shimomura ,  Yoshinori Sano

发明人： Nobuyuki Harada ,  Katsuyuki Wada ,  Hisanori Obara ,  Tadao Shimomura ,  Yoshinori Sano

IPC分类号： A61F13/15 ,  A61L15/26 ,  A61L15/60 ,  C08L101/14 ,  C08L1/00 ,  A61F13/20

CPC分类号： C08L101/14 ,  A61F13/53 ,  A61L15/26 ,  A61L15/60 ,  A61F2013/530036 ,  A61F2013/530708 ,  Y10T428/249921

摘要： The present invention provides a water absorbent matter which is physically and chemically stable, difficult in shifting and falling-off of a water-absorbent resin particle and from a cellulose fiber, and thereby, has superior water-absorbent properties. A water absorbent matter like this is made by containing a water-absorbent resin particle having an acidic group such as a carboxyl group on the surface, a cellulose fiber, and a cationic high-molecular compound having a weight-average molecular weight of 2,000 or more, so that the water-absorbent resin particle is firmly set on the cellulose fiber by a cationic high-molecular compound in the presence of water.

摘要翻译： 本发明提供一种物理和化学稳定性，吸水性树脂颗粒和纤维素纤维移位和脱落困难的吸水剂，因此具有优异的吸水性。 这样的吸水材料通过在表面含有具有酸性基团如羧基的吸水性树脂颗粒，纤维素纤维和重均分子量为2,000的阳离子高分子化合物或 使得吸水性树脂颗粒在水存在下通过阳离子高分子化合物牢固地固定在纤维素纤维上。

公开(公告)号：US09308290B2

公开(公告)日：2016-04-12

申请号：US14029878

申请日：2013-09-18

申请人： Katsuyuki Wada ,  Makoto Nagasawa ,  Kunihiko Ishizaki

发明人： Katsuyuki Wada ,  Makoto Nagasawa ,  Kunihiko Ishizaki

IPC分类号： A61F13/53 ,  A61L15/24 ,  A61L15/42 ,  A61L15/60 ,  A61F13/535 ,  A61F13/15

CPC分类号： A61L15/24 ,  A61F13/535 ,  A61F2013/15463 ,  A61F2013/530569 ,  A61F2013/530591 ,  A61F2013/530708 ,  A61F2013/530737 ,  A61F2013/530766 ,  A61L15/42 ,  A61L15/60

摘要： To improve the heat retention by diapers and other absorbents, a heat retention indicator 1 of a water-absorbing resin which is defined in the present invention needs be 3.0° C./min or less and also that particular requirements need be met to satisfy this condition. If the requirements are met, a water-absorbing resin, absorbent, and absorbent article can be provided which has a heat retention indicator 1 of 0 to 3.0° C./min or less and which exhibits excellent heat retention and absorption.

摘要翻译： 为了提高尿布和其它吸收剂的保温性，本发明中限定的吸水性树脂的保温指示剂1为3.0℃/分以下，也满足特定要求 条件。 如果满足要求，则可以提供吸水性树脂，吸收性物品和吸收性物品，其具有0〜3.0℃/分钟以下的保温指示剂1，并且显示优异的保温性和吸收性。

公开(公告)号：US08952116B2

公开(公告)日：2015-02-10

申请号：US13498780

申请日：2010-09-29

申请人： Taishi Kobayashi ,  Motohiro Imura ,  Taku Iwamura ,  Katsuyuki Wada ,  Kozo Nogi ,  Yoshiro Mitsukami ,  Masato Abe ,  Hiroko Ueda ,  Koji Honda

发明人： Taishi Kobayashi ,  Motohiro Imura ,  Taku Iwamura ,  Katsuyuki Wada ,  Kozo Nogi ,  Yoshiro Mitsukami ,  Masato Abe ,  Hiroko Ueda ,  Koji Honda

IPC分类号： C08F220/06 ,  C08K5/098 ,  C08L33/02 ,  B01J20/22 ,  B01J20/26 ,  B01J20/30 ,  A61L15/60 ,  C08J3/24

CPC分类号： A61L15/60 ,  A61L15/22 ,  B01J20/223 ,  B01J20/267 ,  B01J20/30 ,  B01J2220/44 ,  C08F220/06 ,  C08J3/245 ,  C08J2300/14 ,  C08J2333/02 ,  C08K5/098 ,  C08L33/02

摘要： A particulate water absorbing agent of the present invention is a water absorbing agent containing a water absorbing resin as a main component, the particulate water absorbing agent containing a polyvalent metal cation and satisfying: (1) the polyvalent metal cation is contained in an amount between 0.001 wt % and 5 wt % relative to the amount of the water absorbing agent; (2) an absorbency without pressure (CRC) is not less than 28 (g/g) and an absorbency against pressure (AAP 4.83 kPa) is not less than 10 (g/g); (3) the absorbency against pressure and the absorbency without pressure satisfy 77≦AAP (4.83 kPa)+1.8×CRC≦100; and (4) a moisture content of the water absorbing agent is between 5 wt % and 20 wt %. This provides a water absorbing agent which has blocking resistance after moisture absorption, is excellent in stability to shock and suppresses Re-Wet when used in a diaper.

摘要翻译： 本发明的颗粒状吸水剂是含有吸水性树脂作为主要成分的吸水剂，含有多价金属阳离子的颗粒状吸水剂，满足：（1）多价金属阳离子的含量为 0.001重量％和5重量％; （2）无压吸收率（CRC）不小于28（g / g），抗压吸收性（AAP 4.83kPa）不小于10（g / g）; （3）抗压吸收性和无压吸收性满足77＆nlE; AAP（4.83kPa）+ 1.8×CRC＆nlE; 100; 和（4）吸水剂的水分含量在5重量％至20重量％之间。 这提供了一种在吸湿后具有抗粘连性的吸水剂，对休克的稳定性优异，并且当在尿布中使用时抑制Re-Wet。

公开(公告)号：US08729191B2

公开(公告)日：2014-05-20

申请号：US11883621

申请日：2006-04-06

申请人： Takaaki Kawano ,  Hirotama Fujimaru ,  Kunihiko Ishizaki ,  Katsuyuki Wada

发明人： Takaaki Kawano ,  Hirotama Fujimaru ,  Kunihiko Ishizaki ,  Katsuyuki Wada

IPC分类号： C08F6/02 ,  C08F8/44 ,  C08F20/06

CPC分类号： C08F220/06 ,  A61L15/60 ,  C08F20/06 ,  C08F222/1006 ,  C08K5/01 ,  C08K5/04 ,  C08L33/02

摘要： An embodiment of the present invention allows for production, with a high productivity, of a water-absorbent resin including an improved relationship between absorption capacity and water-soluble polymer which are conflicting properties of the water-absorbent resin, being easily controlled for polymerization reaction, being of no odor, being less colored, and being of high absorption properties. In one embodiment of the present invention, acrylic acid composition is neutralized with a basic composition including an iron content of 0.2 to 5 ppm by weight (relative to a basic compound exclusive of a solvent); and then polymerizing a resultant neutralized product, the acrylic acid composition including: (i) a methoxyphenol content of 10 to 200 ppm by weight relative to the weight of acrylic acid; and (ii) at least one compound content of which is 0 to 10 ppm by weight relative to the weight of acrylic acid, the compound being selected from the group consisting of protoanemonin and furfural.

摘要翻译： 本发明的一个实施方案允许以高生产率生产吸水性树脂，其包括吸收性能与吸水性树脂相互矛盾的水溶性聚合物之间的改善的关系，容易控制聚合反应 没有气味，少着色，吸收性高。 在本发明的一个实施方案中，丙烯酸组合物用包含铁含量为0.2-5重量ppm（相对于不包括溶剂的碱性化合物）的碱性组合物中和; 然后使得到的中和产物聚合，所述丙烯酸组合物包括：（i）甲氧基苯酚的含量相对于丙烯酸的重量为10-200ppm; 和（ii）相对于丙烯酸的重量，至少一种化合物含量为0-10ppm（重量），该化合物选自原水鳖素和糠醛。

公开(公告)号：US20130175473A1

公开(公告)日：2013-07-11

申请号：US13876728

申请日：2011-09-30

申请人： Katsuyuki Wada ,  Yasuhisa Nakashima

发明人： Katsuyuki Wada ,  Yasuhisa Nakashima

IPC分类号： B01J20/28

CPC分类号： B01J20/28011 ,  A61L15/60 ,  B01J20/223 ,  B01J20/267 ,  B01J20/3085 ,  C08F220/06 ,  C08J3/203 ,  C08J3/245 ,  C08J2333/02 ,  C08F2222/1013

摘要： Provided is a water-absorbing agent having enhanced performance in both the centrifuge retention capacity and the absorption against pressure (particularly, the vertical diffusion absorption amount) of a water-absorbing resin, and also, a water-absorbing agent which can provide an absorbent core having a large absorption amount in a diaper, having improved diffusibility and liquid permeability, and having a smaller re-wet amount, is provided at low cost.Disclosed is a particulate water-absorbing agent containing a surface-crosslinked polyacrylic acid (salt)-type water-absorbing resin as a main component, and containing at least one spacer selected from a polycation and water-insoluble fine particles, the particulate water-absorbing agent satisfying an free swell capacity (FSC) of 55 to 65 [g/g], an absorption against pressure (AAP—4.83 kPa) of 20 to 30 [g/g], and a vertical diffusion absorption amount under pressure (VDAUP—4.83 kPa) of 30 to 80 g.

摘要翻译： 本发明提供一种在吸水树脂的离心保留能力和耐压吸收（特别是垂直扩散吸收量）两方面具有增强性能的吸水剂，以及可提供吸收性能的吸水剂 以低成本提供具有改善的扩散性和液体渗透性并且具有较小再湿度的尿布中吸收量大的芯。 本发明提供一种含有表面交联聚丙烯酸（盐）型吸水性树脂作为主要成分并含有至少一种选自聚阳离子和水不溶性微粒的间隔物的颗粒状吸水剂， 满足55〜65 [g / g]的自由溶胀能力（FSC），20〜30 [g / g]的压力吸收（AAP-4.83kPa）和压力下的垂直扩散吸收量（VDAUP -4.83kPa）为30〜80g。

公开(公告)号：US08198209B2

公开(公告)日：2012-06-12

申请号：US12294328

申请日：2007-03-20

申请人： Kazushi Torii ,  Hirofumi Shibata ,  Kazuki Kimura ,  Yasuhisa Nakashima ,  Motohiro Imura ,  Hiroko Ueda ,  Katsuyuki Wada

发明人： Kazushi Torii ,  Hirofumi Shibata ,  Kazuki Kimura ,  Yasuhisa Nakashima ,  Motohiro Imura ,  Hiroko Ueda ,  Katsuyuki Wada

IPC分类号： B01J20/26 ,  B01J20/10 ,  B32B5/24

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10ppm至1,900ppm含量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）该试剂具有相对于4.83kPa（AAP）的压力为18g / g以上的吸收性; 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。