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41. 发明授权

US4920202A Method for production of hydrophilic polymer from hydrated gel polymer 失效
标题翻译：从水合凝胶聚合物制备亲水聚合物的方法
公开(公告)号：US4920202A
公开(公告)日：1990-04-24
申请号：US187866
申请日：1988-04-29
申请人： Yoshio Irie , Kaoru Iwasaki , Takumi Hatsuda , Kazumasa Kimura , Nobuyuki Harada , Kunihiko Ishizaki , Tadao Shimomura , Teruaki Fujiwara
发明人： Yoshio Irie , Kaoru Iwasaki , Takumi Hatsuda , Kazumasa Kimura , Nobuyuki Harada , Kunihiko Ishizaki , Tadao Shimomura , Teruaki Fujiwara
IPC分类号： C08F6/00
CPC分类号： C08F6/001
摘要： A method for the production of a hydrophilic polymer having a small residual monomer content from a hydrated gel polymer, which method comprises drying said hydrated gel polymer by contact thereof with a gas containing at least steam and having a dew point in the range of 50.degree. to 100.degree. C. at a temperature in the range of 80.degree. C. to 250.degree. C., and a hydrophilic polymer obtained therefrom.

42. 发明授权

US06254990B1 Surface-crosslinking process for water-absorbent resin 有权
标题翻译：吸水树脂的表面交联方法
公开(公告)号：US06254990B1
公开(公告)日：2001-07-03
申请号：US09250477
申请日：1999-02-14
申请人： Kunihiko Ishizaki , Teruyuki Kanto , Shigeru Sakamoto , Nobuyuki Harada , Kazuhisa Hitomi
发明人： Kunihiko Ishizaki , Teruyuki Kanto , Shigeru Sakamoto , Nobuyuki Harada , Kazuhisa Hitomi
IPC分类号： C08F814
CPC分类号： C08J3/245 , C08J3/12 , C08J2300/14 , Y10T428/2982
摘要： The present invention provides a surface-crosslinking process of a water-absorbent resin to obtain a water-absorbing agent which has high absorption speed and excellent absorption capacity under a load (a water-absorbent resin which has specific or larger values of properties). In a process comprising the step of adding a crosslinking agent to a dry water-absorbent resin powder to thereby crosslink the neighborhood of its surface, the surface-crosslinking is carried out while the resin powder having a weight-average particle diameter of 200 to 1,000 &mgr;m is pulverized.
摘要翻译：本发明提供一种吸水性树脂的表面交联方法，以获得在负荷下具有高吸收速度和优异吸收能力的吸水剂（具有特定或更大特性值的吸水性树脂）。在包括向干吸水性树脂粉末中添加交联剂从而交联其表面附近的步骤的过程中，进行表面交联，同时重均粒径为200〜1000的树脂粉末妈妈被粉碎。

43. 发明授权

US6001911A Absorbent resin, absorbent material and method of manufacturing the same 失效
标题翻译：吸收性树脂，吸收材料及其制造方法
公开(公告)号：US6001911A
公开(公告)日：1999-12-14
申请号：US860445
申请日：1997-06-26
申请人： Kunihiko Ishizaki , Hisanobu Obara , Toshimasa Kitayama , Yoshihiro Motono , Nobuyuki Harada
发明人： Kunihiko Ishizaki , Hisanobu Obara , Toshimasa Kitayama , Yoshihiro Motono , Nobuyuki Harada
IPC分类号： A61F13/15 , A61L15/60 , C08J3/075 , C08K5/05
CPC分类号： A61F13/531 , A61L15/60 , C08J3/075 , A61F2013/15357 , A61F2013/15463 , A61F2013/530583 , A61F2013/530708 , A61F2013/530715 , A61F2013/530744
摘要： A water content of a water-containing gel of a hydrophilic cross-linked polymer is reduced by pressuring (calendaring) it. Then, a gel composition including, for example, a water-containing gel including cross-linked poly(meth)acrylic acid (salt), glycerol (polyhydric alcohol) and polyester fibers (auxiliary forming material), etc., is fed to a drum dryer on an upstream side of a pressurizing roller. Then, the resulting gel composition is pressurized (calendared) heated by a pressurizing roller to be formed into a sheet. As a result, a sheet-like absorbent material having at least one smooth surface can be obtained. The absorbent material resulting from the described method shows excellent properties and especially absorbing properties such as absorbing rate, absorbency under load, and shape retaining properties.
摘要翻译： PCT No.PCT / JP96 / 03191 Sec。 371日期：1997年6月26日 102（e）日期1996年6月26日PCT提交1996年10月31日PCT公布。公开号WO97 / 16492 日期1997年5月9日亲水性交联聚合物的含水凝胶的含水量通过加压（压延）而降低。然后，将包含交联聚（甲基）丙烯酸（盐），甘油（多元醇）和聚酯纤维（辅助成形材料）等的含水凝胶等的凝胶组合物供给到滚筒式干燥机在加压辊的上游侧。然后，将所得凝胶组合物加压（压延），由加压辊加热以形成片材。结果，可以获得具有至少一个平滑表面的片状吸收材料。由所述方法得到的吸收材料显示出优异的性能，特别是吸收速率，负载下的吸收性和形状保持性等吸收性能。

44. 发明授权

US06576713B2 Water-absorbent resin powder and production process therefor 有权
标题翻译：吸水树脂粉及其制作方法
公开(公告)号：US06576713B2
公开(公告)日：2003-06-10
申请号：US09789735
申请日：2001-02-22
申请人： Kunihiko Ishizaki , Teruyuki Kanto , Nobuyuki Harada , Takumi Hatsuda , Shinichi Fujino
发明人： Kunihiko Ishizaki , Teruyuki Kanto , Nobuyuki Harada , Takumi Hatsuda , Shinichi Fujino
IPC分类号： C08F22062
CPC分类号： C08J3/12 , C08J3/122 , C08J2300/14 , Y10T428/2982
摘要： The present invention provides a production process for a water-absorbent resin powder which is excellent in particle diameter distribution and properties, wherein the production process not only inhibits adhesion and aggregation in the production steps, but also is excellent in energy efficiency, drying efficiency, and productivity. The production process for a water-absorbent resin powder comprises the steps of: polymerizing an aqueous monomer solution containing a crosslinking agent; heat-drying the resultant crosslinked hydrogel polymer; and pulverizing the resultant dry polymer; wherein: the dry polymer resultant from the heat-drying step is forcibly cooled before or during the pulverization step; and the water-absorbent resin powder has an average particle diameter of 200 to 600 &mgr;m after the pulverization step wherein the total ratio of particles having particle diameters of not larger than 150 &mgr;m and particles having particle diameters of not smaller than 850 &mgr;m in the water-absorbent resin powder is not more than 15 weight % of the water-absorbent resin powder.
摘要翻译：本发明提供一种吸水性树脂粉末的制造方法，其特征在于，粒径分布和性能优异，其制造方法不仅抑制了制造工序中的粘合和聚集，而且能量效率，干燥效率，和生产率。吸水性树脂粉末的制造方法包括以下步骤：使含有交联剂的单体水溶液聚合; 加热干燥所得的交联水凝胶聚合物; 并粉碎所得的干燥聚合物; 其中：由所述加热干燥步骤得到的干燥聚合物在粉碎步骤之前或阶段被强制冷却; 吸水性树脂粉末在粉碎工序中的平均粒径为200〜600μm，其中粒径不大于150μm的颗粒和颗粒直径不小于850μm的颗粒在水中的总比例 - 吸收性树脂粉末的吸水树脂粉末的15重量％以下。

45. 发明授权

US06251960B1 Process for production of water absorbent resin 有权
标题翻译：吸水树脂生产工艺
公开(公告)号：US06251960B1
公开(公告)日：2001-06-26
申请号：US09343460
申请日：1999-06-30
申请人： Kunihiko Ishizaki , Hisanobu Obara , Nobuyuki Harada , Yoshihiro Motono , Koji Miyake
发明人： Kunihiko Ishizaki , Hisanobu Obara , Nobuyuki Harada , Yoshihiro Motono , Koji Miyake
IPC分类号： C08J928
CPC分类号： C08J9/06 , A61L15/425 , A61L15/60 , C07C257/14 , C08J2207/12 , C08J2300/00 , Y02P20/149 , C08L33/00
摘要： A water-absorbent resin is produced by dispersing a solid blowing agent having an average particle diameter within a range of from 1 &mgr;m to 100 &mgr;m in an aqueous monomer solution containing an unsaturated monomer and a cross-linking agent, and then polymerizing the unsaturated monomer. The water-absorbent resin has excellent water absorption characteristics, such as improved dispersion and absorption rate of aqueous fluid, enhanced water retention capacity and dry touch, lower water-soluble component content, and lower residual monomer content. When a water-absorbent resin composition using the water-absorbent resin is used for, for example, a sanitary material, it is possible to improve the absorption rate and water retention capacity, and prevent leakage of fluid from the sanitary material.
摘要翻译：通过将平均粒径为1〜100μm的固体发泡剂在含有不饱和单体和交联剂的单体水溶液中分散，然后使不饱和单体聚合而制造吸水性树脂。吸水性树脂具有优异的吸水性，例如改善水性流体的分散性和吸水率，增加保水能力和干触感，降低水溶性成分含量，降低残留单体含量。当使用吸水性树脂的吸水性树脂组合物用于例如卫生材料时，可以提高吸收速率和保水能力，并且防止流体从卫生材料泄漏。

46. 发明授权

US5985944A Water-absorbent resin, process for production thereof, and water-absorbent resin composition 失效
标题翻译：吸水性树脂，其制造方法和吸水性树脂组合物
公开(公告)号：US5985944A
公开(公告)日：1999-11-16
申请号：US687377
申请日：1996-08-02
申请人： Kunihiko Ishizaki , Hisanobu Obara , Nobuyuki Harada , Yoshihiro Motono , Koji Miyake
发明人： Kunihiko Ishizaki , Hisanobu Obara , Nobuyuki Harada , Yoshihiro Motono , Koji Miyake
IPC分类号： A61L15/42 , A61L15/60 , C07C257/14 , C07D233/64 , C08J9/06 , C08J9/28
CPC分类号： C08J9/06 , A61L15/425 , A61L15/60 , C07C257/14 , C08J2207/12 , C08J2300/00 , Y02P20/149
摘要： A water-absorbent resin is produced by dispersing a solid blowing agent having an average particle diameter within a range of from 1 .mu.m to 100 .mu.m in an aqueous monomer solution containing an unsaturated monomer and a cross-linking agent, and then polymerizing the unsaturated monomer. The water-absorbent resin has excellent water absorption characteristics, such as improved dispersion and absorption rate of aqueous fluid, enhanced water retention capacity and dry touch, lower water-soluble component content, and lower residual monomer content. When a water-absorbent resin composition using the water-absorbent resin is used for, for example, a sanitary material, it is possible to improve the absorption rate and water retention capacity, and prevent leakage of fluid from the sanitary material.
摘要翻译： PCT No.PCT / JP95 / 02523 Sec。 371日期：1996年8月2日 102（e）日期1996年8月2日PCT提交1995年12月8日PCT公布。公开号WO96 / 17884 日期1996年6月13日吸水性树脂通过将平均粒径为1μm〜100μm的固体发泡剂在含有不饱和单体和交联剂的单体水溶液中分散而制造，然后使不饱和单体聚合。吸水性树脂具有优异的吸水性，例如改善水性流体的分散性和吸水率，增加保水能力和干触感，降低水溶性成分含量，降低残留单体含量。当使用吸水性树脂的吸水性树脂组合物用于例如卫生材料时，可以提高吸收速率和保水能力，并且防止流体从卫生材料泄漏。

47. 发明授权

US5981070A Water-absorbent agent powders and manufacturing method of the same 失效
标题翻译：吸水剂粉末及其制造方法相同
公开(公告)号：US5981070A
公开(公告)日：1999-11-09
申请号：US793712
申请日：1997-03-03
申请人： Kunihiko Ishizaki , Kinya Nagasuna , Nobuyuki Harada
发明人： Kunihiko Ishizaki , Kinya Nagasuna , Nobuyuki Harada
IPC分类号： A61L15/60 , C08F8/00 , C08J3/12 , B32B5/16 , C08F2/16
CPC分类号： C08F8/00 , A61L15/60 , C08J3/245 , C08J9/08 , C08J9/102 , C08J9/36 , C08J2207/12 , C08J2300/14 , C08J2333/02 , Y10S521/905 , Y10T428/2991 , Y10T428/2998
摘要： A manufacturing method of water-absorbent agent powders of the present invention is a method of a reducing an amount of a residue of an epoxy crosslinking agent remaining therein by adding a nucleophilic reagent in a form of powder to surface region crosslinked water-absorbent resin powders having a carboxyl group under an applied heat in which the residue of the crosslinking agent remains. Since the method permits an amount of the residue of the crosslinking agent to be reduced by adding a nucleophilic reagent to the heated water-absorbent resin powders, the water-absorbent agent powders exhibiting well-balanced properties which are mutually negatively correlated from one another, i.e., high absorbency under pressure, a reduced amount of a residue of the epoxy crosslinking agent and a high absorbing rate compared with the conventional surface region crosslinked water-absorbent resin powders can be achieved. Such water-absorbent agent powders are suitably used in sanitary materials such as disposable diaper, sanitary napkins, etc.
摘要翻译： PCT No.PCT / JP96 / 01863 Sec。 371日期1997年3月3日 102（e）1997年3月3日PCT PCT 1996年7月5日PCT公布。出版物WO97 / 03114 日本1997年1月30日本发明的吸水剂粉末的制造方法是通过将表面区域交联的粉末状的亲核试剂添加到其中而残留的环氧交联剂的残渣量减少的方法具有羧基的吸水性树脂粉末，其中保留了交联剂的残余物。由于该方法允许通过向加热的吸水性树脂粉末中添加亲核试剂来减少交联剂的残留量，所以表现出彼此相互负相关的良好平衡性能的吸水剂粉末，即，与传统的表面区域交联的吸水性树脂粉末相比，可以实现在压力下的高吸收性，环氧交联剂残留量的减少和吸收率高的优点。这种吸水剂粉末适用于一次性尿布，卫生巾等卫生材料。

48. 发明授权

US09962680B2 Polyacrylic acid (salt)-based water absorbent resin, and method for production thereof 有权
公开(公告)号：US09962680B2
公开(公告)日：2018-05-08
申请号：US13994871
申请日：2011-12-16
申请人： Satoshi Matsumoto , Kunihiko Ishizaki , Kanako Tsuru
发明人： Satoshi Matsumoto , Kunihiko Ishizaki , Kanako Tsuru
IPC分类号： B01J20/26 , B01J20/28 , B01J20/30 , A61L15/60 , C08F220/06 , C08F222/10
CPC分类号： B01J20/261 , A61L15/60 , B01J20/28014 , B01J20/3092 , C08F220/06 , C08F222/1006 , C08L33/02
摘要： Provided is a method for producing a polyacrylic acid (salt)-based water absorbent resin, which is a convenient production method for a water absorbent resin for an absorbent suitable for practical use, the water absorbent resin having a reduced amount of residual monomers. Disclosed is a method for producing a polyacrylic acid (salt)-based water absorbent resin, the method comprising a polymerization step of polymerizing an aqueous monomer solution containing acrylic acid (salt) as a main component; a drying step of drying a water-containing gel-like crosslinked polymer obtained in the polymerization step; a surface crosslinking step of surface crosslinking the water absorbent resin under drying or the water absorbent resin which has been dried; and a packaging step of packaging the surface crosslinked water absorbent resin, wherein an iron content in the aqueous monomer solution in the polymerization step is 2 ppm (relative to the monomer(s)) or less, a moisture content of the water absorbent resin in the packaging step is 1% by weight or more, and the method further comprises, after the packaging step, a storage step of storing the packaged water absorbent resin for 3 days or longer.

49. 发明授权

US09272068B2 Process for producing water-absorbing resin 有权
标题翻译：吸水树脂的制造方法
公开(公告)号：US09272068B2
公开(公告)日：2016-03-01
申请号：US13634167
申请日：2011-03-14
申请人： Syuji Kanzaki , Sumio Okuda , Kunihiko Ishizaki , Satoshi Matsumoto
发明人： Syuji Kanzaki , Sumio Okuda , Kunihiko Ishizaki , Satoshi Matsumoto
IPC分类号： C08J3/12 , A61L15/56 , A61L15/60 , C08F6/00 , B01J20/26 , C08J3/24
CPC分类号： A61L15/56 , A61L15/60 , B01J20/261 , B01J20/267 , B01J2220/68 , C08F6/008 , C08J3/12 , C08J3/122 , C08J3/245 , C08J2300/14 , C08J2333/02
摘要： The disclosed process for producing a water-absorbing resin comprising: a polymerization step of polymerizing an aqueous unsaturated monomer; and a drying step of drying a particulated water-containing gel-liked crosslinked polymer, obtained in a finely crushing step during the polymerization or after the polymerization. In the process, the drying step is interrupted with a dryer kept in a heated state and thereafter the drying step is restarted.
摘要翻译：所公开的生产吸水性树脂的方法，包括：使含水不饱和单体聚合的聚合步骤; 以及干燥步骤，在聚合过程中或聚合后，在细碎的步骤中得到颗粒状的含水凝胶状交联聚合物。在该过程中，干燥步骤被保持在加热状态的干燥器中断，然后重新开始干燥步骤。

50. 发明授权

US09044525B2 Polyacrylic acid (salt)-based water absorbent resin powder and method for producing the same 有权
标题翻译：聚丙烯酸（盐）系吸水树脂粉末及其制造方法
公开(公告)号：US09044525B2
公开(公告)日：2015-06-02
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 , C08F20/06 , C08J3/24 , C08K5/00 , C08L33/02 , C08K5/17
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

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