公开(公告)号：US07595428B2

公开(公告)日：2009-09-29

申请号：US10148436

申请日：2001-11-21

申请人： Hiroko Ueda ,  Katsuyuki Wada ,  Yoshio Irie

发明人： Hiroko Ueda ,  Katsuyuki Wada ,  Yoshio Irie

IPC分类号： A61F13/15

CPC分类号： A61L15/40 ,  A61L15/46 ,  A61L15/60 ,  A61L2300/30

摘要： The present invention has an object to provide a particulate water-absorbing composition, a production process therefor, and an absorbent article comprising this particulate water-absorbing composition, wherein the particulate water-absorbing composition causes little coloring of other materials and further is of high safety, and can provide excellent deodorizability and excellent absorption properties to absorbent articles such as diapers in the case where combined into the absorbent articles. As a means of achieving this object, a particulate water-absorbing composition according to the present invention is characterized by comprising a plant powder and a water-absorbent resin, wherein a surface portion and/or its vicinity of the water-absorbent resin is surface-treated with a crosslinking agent, and wherein the particulate water-absorbing composition exhibits an offensive-odor removal index of not less than 180 wherein the offensive-odor removal index is represented by the following equation: offensive-odor removal index=1.1×hydrogen sulfide removal ratio+2.0×methylmercaptan removal ratio+0.3×ammonia removal ratio.

摘要翻译： 本发明的目的是提供一种颗粒状吸水性组合物及其制造方法以及包含该颗粒状吸水性组合物的吸收性物品，其中，所述颗粒状吸水性组合物几乎不引起其他材料的着色，并且还高 并且在组合成吸收性物品的情况下，可以对尿布等吸收性物品提供优异的除臭性和优异的吸收性。 作为实现该目的的手段，本发明的颗粒状吸水性组合物的特征在于，含有植物粉末和吸水性树脂，其中吸水性树脂的表面部分和/或其附近为表面 用交联剂处理，其中颗粒状吸水组合物表现出不低于180的恶臭除臭指数，其中恶臭除臭指数由下列等式表示：恶臭除臭指数= 1.1硫化氢 去除率+ 2.0×甲硫醇去除率+0.3×去除率。

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：US06586549B1

公开(公告)日：2003-07-01

申请号：US09610967

申请日：2000-07-06

申请人： Takumi Hatsuda ,  Kazuki Kimura ,  Koji Miyake ,  Eri Goto ,  Katsuyuki Wada

发明人： Takumi Hatsuda ,  Kazuki Kimura ,  Koji Miyake ,  Eri Goto ,  Katsuyuki Wada

IPC分类号： C08J22046

CPC分类号： C08J3/245 ,  A61L15/60 ,  C08J3/12 ,  C08J2300/14 ,  C08L33/02 ,  C08L63/00 ,  C08L2666/14

摘要： The present invention provides: a water-absorbing composition such that portions containing the water-absorbing composition in a high concentration exhibit excessive-liquid permeation buffering effects in absorbent articles comprising the water-absorbing composition and hydrophilic fibers; and a use of this water-absorbing composition. The water-absorbing composition comprises a water-absorbent resin and an excessive-liquid permeation buffer, wherein the water-absorbent resin is a product by a process including the step of further crosslinking the surface vicinity of a crosslinked polymer, and this water-absorbing composition is characterized by having a liquid permeation buffering index of not less than 0.4 and exhibiting an absorption capacity of not less than 25 g/g in absorbent structures under load, and further having an average particle diameter in the range of 200˜600 &mgr;m, wherein the ratio of particles having particle diameters smaller than 106 &mgr;m in the water-absorbing composition is not more than 5 weight %. This water-absorbing composition is, for example, used for the absorbent articles comprising the water-absorbing composition and the hydrophilic fibers.

摘要翻译： 本发明提供一种吸水性组合物，使得含有高浓度吸水性组合物的部分在含有吸水性组合物和亲水性纤维的吸收性物品中表现出过度的液体渗透缓冲效果; 以及这种吸水组合物的用途。 吸水性组合物包含吸水性树脂和过量液体渗透缓冲液，其中吸水性树脂是通过包括进一步交联交联聚合物表面附近的步骤的方法的产物，并且该吸水性树脂 其组成的特征在于在负载下的吸收结构体中的液体渗透缓冲指数为0.4以上，吸收能力为25g / g以上，平均粒径在200〜600μm的范围内， 其中，吸水性组合物中粒径小于106μm的粒子的比例为5重量％以下。 该吸水性组合物例如用于包含吸水性组合物和亲水性纤维的吸收性物品。

公开(公告)号：US06476155B1

公开(公告)日：2002-11-05

申请号：US09634532

申请日：2000-08-08

申请人： Katsuyuki Wada ,  Masatoshi Nakamura ,  Kinya Nagasuna ,  Yoshihiko Masuda

发明人： Katsuyuki Wada ,  Masatoshi Nakamura ,  Kinya Nagasuna ,  Yoshihiko Masuda

IPC分类号： F83

CPC分类号： C08J3/24 ,  C08J3/20 ,  C08J2300/14

摘要： A hydrophilic polymer is denatured with a gaseous denaturant or a powdery denaturant substance made from a liquid denaturant substance. The liquid denaturant substance is made into powders by, for example, a method of mixing the liquid denaturant substance with a water-insoluble compound, a method of cooling the liquid denaturant substance to or below its melting point to turn the same into a solid state. Consequently, the hydrophilic polymer can be denatured uniformly. In case that the hydrophilic polymer is denatured with a gaseous denaturant, the hydrophilic polymer and denaturant react with each other efficiently in a safe manner regardless of the size or shape of the hydrophilic polymer. In case that the hydrophilic polymer is denatured with the powdery denaturant substance, not only the liquid denaturant substance which is substantially in the solid state can be mixed with the hydrophilic polymer, but also the denaturation timing can be readily controlled.

摘要翻译： 亲水性聚合物用气态变性剂或由液体变性剂物质制成的粉状变性剂物质变性。 液体变性剂物质通过例如将液体变性剂物质与水不溶性化合物混合的方法制成粉末，将液体变性剂物质冷却至其熔点以下以使其变为固态的方法 。 因此，亲水性聚合物可以均匀地变性。 亲水性聚合物在气态变性剂变性的情况下，无论亲水性聚合物的尺寸或形状如何，亲水性聚合物和变性剂以安全的方式有效地彼此反应。 亲水性聚合物与粉末状变性剂变性的情况下，不仅可以将基本上处于固体状态的液体变性剂与亲水性聚合物混合，而且可以容易地控制变性定时。

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：US20140193641A1

公开(公告)日：2014-07-10

申请号：US14129792

申请日：2012-06-29

申请人： Kazushi Torii ,  Reiko Nakatsuru ,  Yasuhisa Nakashima ,  Katsuyuki Wada ,  Kunihiko Ishizaki

发明人： Kazushi Torii ,  Reiko Nakatsuru ,  Yasuhisa Nakashima ,  Katsuyuki Wada ,  Kunihiko Ishizaki

IPC分类号： A61L15/26 ,  A61L15/60

CPC分类号： A61L15/26 ,  A61L15/60 ,  C08F20/06 ,  C08F220/06 ,  C08J3/245 ,  C08J2333/02 ,  C08K5/0091 ,  C08K5/175 ,  C08L33/02 ,  Y10T428/2982 ,  C08F2222/1013

摘要： Provided is a water absorbent resin having excellent liquid permeability, water absorbent speed, anti-impact stability, and weather resistance. Provided is a polyacrylic acid (salt)-based water absorbent resin powder in which the water absorption capacity without load (CRC) is 30 to 45 [g/g], the water absorption capacity under load (AAP 0.3) is 20 to 35 [g/g], the water absorption capacity under load (AAP 0.7) is 10 to 28 [g/g], and the weight average particle diameter (D50) is 300 to 500 μm, characterized by including p-methoxyphenol; having a degradable soluble component (0.05% L-A (saline) for 2 hours/60° C., one hour extraction rinse/room temperature) of 40% by weight or less; and having a internal gas bubbles ratio of 0.1 to 2.5%, as specified by the following equation. (Internal gas bubbles ratio)[%]={(True density)−(Apparent density)}/(True density)×100

摘要翻译： 提供具有优异的透液性，吸水速度，抗冲击稳定性和耐候性的吸水性树脂。 本发明提供无负载吸水能力（CRC）为30〜45 [g / g]的聚丙烯酸（盐）系吸水性树脂粉末，负荷吸水量（AAP 0.3）为20〜35 [ g / g]，负荷下的吸水量（AAP 0.7）为10〜28 [g / g]，重均粒径（D50）为300〜500μm，其特征在于包括对甲氧基苯酚， 具有40重量％以下的可降解可溶成分（0.05％L-A（盐水）2小时/ 60℃，1小时萃取冲洗/室温） 内部气泡比为0.1〜2.5％，如下式所示。 （内部气泡比）[％] = {（真密度） - （表观密度）} /（真密度）×100

公开(公告)号：US08729190B2

公开(公告)日：2014-05-20

申请号：US12529306

申请日：2008-02-28

申请人： Takahiro Kitano ,  Takaaki Kawano ,  Katsuyuki Wada

发明人： Takahiro Kitano ,  Takaaki Kawano ,  Katsuyuki Wada

IPC分类号： C08F20/00 ,  C08F20/06

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

摘要： A particulate water-absorbent agent containing a polyacrylate salt-type water-absorbent resin. The agent has an absorption capacity without load of 28 g/g or higher and has a diffusion absorption index of 1.40 to 10.0 g/g min. The amount of water-soluble components in the agent, with stirring, is 15-60% by mass. The difference between this amount and the amount of water-soluble components, without stirring, is 15-50% by mass. Also disclosed is a method of making the above-identified agent.

摘要翻译： 含有聚丙烯酸盐型吸水性树脂的颗粒状吸水剂。 该试剂具有无负载的吸收能力为28g / g以上，扩散吸收指数为1.40〜10.0g / gmin。 在搅拌下，试剂中的水溶性成分的量为15〜60质量％。 在不搅拌的情况下，该量与水溶性成分的含量之差为15〜50质量％。 还公开了制备上述试剂的方法。