公开(公告)号：US06875511B2

公开(公告)日：2005-04-05

申请号：US10443777

申请日：2003-05-23

申请人： Yorimichi Dairoku ,  Yoshio Irie ,  Kenji Tada ,  Shinichi Fujino ,  Makoto Nagasawa

发明人： Yorimichi Dairoku ,  Yoshio Irie ,  Kenji Tada ,  Shinichi Fujino ,  Makoto Nagasawa

IPC分类号： C08J3/12 ,  B32B5/16

CPC分类号： C08J3/12 ,  C08J3/122 ,  C08J2300/14 ,  Y10T428/2982 ,  Y10T428/2985 ,  Y10T428/2991 ,  Y10T428/2998

摘要： The present invention provides: a production process for a particulate water-absorbent resin with high productivity, which production process is carried out in such a manner that the particulate water-absorbent resin will contain particles with particle diameters of 150 to 850 μm (but excluding 850 μm) in an amount of not smaller than 75 weight % of the particulate water-absorbent resin after the pulverization step or after the pulverization step and the drying step even if the adjustment of the particle diameters is not carried out by the sieving classification procedure; a novel particulate water-absorbent resin having high properties; and a sanitary material comprising this particulate water-absorbent resin. The production process for a particulate water-absorbent resin, according to the present invention, is carried out in such a manner that the particulate water-absorbent resin will contain particles with particle diameters of 150 to 850 μm (but excluding 850 μm) in an amount of not smaller than 75 weight % of the particulate water-absorbent resin after the pulverization step or after the pulverization step and the drying step; with the production process being characterized in that, in the pulverization step, a hydropolymer of a water-absorbent resin having a water content of 10 to 30 weight % is pulverized with a pulverizer.

摘要翻译： 本发明提供一种高生产率的颗粒状吸水性树脂的制造方法，该制造方法以粒状吸水性树脂含有粒径为150〜850μm的粒子（但不包括 850μm），在粉碎步骤之后或粉碎步骤和干燥步骤之后的颗粒状吸水性树脂的75重量％以上，即使不通过筛分分级程序进行粒径的调整 ; 具有高性能的新型颗粒状吸水性树脂; 以及包含该颗粒状吸水性树脂的卫生材料。 根据本发明的颗粒状吸水性树脂的制造方法，是使颗粒状吸水性树脂含有粒径为150〜850μm（但不包括850μm）的颗粒， 在粉碎步骤之后或粉碎步骤和干燥步骤之后的颗粒状吸水性树脂的75重量％以上的量; 其制造方法的特征在于，在粉碎工序中，用粉碎机粉碎含水率为10〜30重量％的吸水性树脂的氢化聚合物。

公开(公告)号：US20050054788A1

公开(公告)日：2005-03-10

申请号：US10942851

申请日：2004-09-17

申请人： Yorimichi Dairoku ,  Yoshio Irie ,  Shinichi Fujino ,  Yasuhiro Fujita ,  Takashi Azumi ,  Kunihiko Ishizaki

发明人： Yorimichi Dairoku ,  Yoshio Irie ,  Shinichi Fujino ,  Yasuhiro Fujita ,  Takashi Azumi ,  Kunihiko Ishizaki

IPC分类号： A61L15/24 ,  C08F2/00 ,  C08F20/06

CPC分类号： C08F220/06 ,  A61L15/24 ,  C08F2/001 ,  C08F2/01 ,  C08F2/10 ,  C08F20/06 ,  C08F222/1006 ,  C08L33/02

摘要： The present invention provides a production process by which a water-absorbent resin of excellent quality can be obtained at a low cost by reasonable steps in aqueous solution polymerization. The process for producing a water-absorbent resin comprises the step of polymerizing an aqueous solution of water-absorbent resin-forming monomers including acrylic acid and/or its sodium salt as major components, wherein: (1) the aqueous solution has a monomer component concentration of not less than 45 weight %; (2) the polymerization is carried out while water is evaporated so that the ratio (concentration ratio) between a solid component concentration in a hydropolymer as formed by the polymerization and a solid component concentration in the aqueous monomer solution will not be less than 1.10; and (3) the solid component concentration in the hydropolymer as formed by the polymerization is not more than 80 weight %.

公开(公告)号：US20120296057A1

公开(公告)日：2012-11-22

申请号：US13574281

申请日：2011-01-20

申请人： Toshihiro Takaai ,  Shinichi Fujino ,  Hidenori Wada

发明人： Toshihiro Takaai ,  Shinichi Fujino ,  Hidenori Wada

IPC分类号： C08F20/06

CPC分类号： C08F6/008 ,  A61L15/60 ,  B01J20/267 ,  B01J20/28004 ,  B01J20/28047 ,  B01J2220/68 ,  C08F6/006 ,  C08F20/04 ,  C08F20/06 ,  C08J3/12 ,  C08J3/245 ,  C08J9/28 ,  C08J2300/14 ,  C08J2333/02 ,  C08L33/02

摘要： In a method for producing a water absorbent resin by drying a particulate hydrogel having a high solid content concentration (of 45% by weight or more, preferably 50% by weight or more, and more preferably 55% by weight or more), a method for efficient drying water absorbent resin having maintained/improved physical properties is provided.Disclosed is a method for producing a water absorbent resin, comprising: a polymerization step to polymerize an unsaturated monomer, and; a drying step to dry a particulate hydrogel crosslinked polymer, which is obtained by micronization of a hydrogel polymer during or after the polymerization and which has a solid content concentration of 45% by weight or more, wherein, an amount of a peroxide in the particulate hydrogel crosslinked polymer to be dried in the drying step is 1 to 100 ppm relative to the weight of the solid content of the particulate hydrogel crosslinked polymer, and a drying temperature of the particulate hydrogel crosslinked polymer in the drying step is 160° C. or more.

摘要翻译： 在通过干燥具有高固含量浓度（45重量％以上，优选50重量％以上，更优选55重量％以上）的颗粒状水凝胶制造吸水性树脂的方法中， 提供了具有保持/改善的物理性能的高效干燥吸水性树脂。 公开了一种吸水性树脂的制造方法，其特征在于，包括：使不饱和单体聚合的聚合工序; 干燥步骤，其干燥颗粒状水凝胶交联聚合物，其通过在聚合期间或之后微粒化水凝胶聚合物并且固体成分浓度为45重量％以上，其中颗粒中的过氧化物的量 在干燥步骤中要干燥的水凝胶交联聚合物相对于颗粒状水凝胶交联聚合物的固体含量的重量为1至100ppm，干燥步骤中颗粒状水凝胶交联聚合物的干燥温度为160℃，或 更多。

公开(公告)号：US09074030B2

公开(公告)日：2015-07-07

申请号：US13807530

申请日：2011-06-29

申请人： Toshihiro Takaai ,  Hidenori Wada ,  Shinichi Fujino

发明人： Toshihiro Takaai ,  Hidenori Wada ,  Shinichi Fujino

IPC分类号： C08F20/00 ,  C08J9/20 ,  A61L15/24 ,  A61L15/60 ,  C08F220/06 ,  C08J3/24 ,  C08J9/36 ,  C08F2/01

CPC分类号： C08J9/122 ,  A61L15/24 ,  A61L15/60 ,  C08F2/01 ,  C08F20/00 ,  C08F220/06 ,  C08J3/245 ,  C08J9/20 ,  C08J9/36 ,  C08J2203/06 ,  C08J2205/05 ,  C08J2333/02 ,  C08J2335/02 ,  Y10T428/2982 ,  C08L33/02 ,  C08F2222/1013

摘要： Provided is a method for producing a water absorbent resin, which promotes the formation of interconnected voids (continuous gas bubbles) in a foamed polymer (foam-like water absorbent resin) by a more convenient method, and produces with high efficiency a water absorbent resin which exhibits a high water absorption rate even when stepped into a sheet form or a powder form in hygiene articles and the like. Disclosed is a a method for producing a polyacrylic acid-type water absorbent resin, comprising (A) a step of obtaining an aqueous solution of acrylic acid-type monomers containing gas bubbles dispersed therein; (B) a step of polymerizing the aqueous monomer solution and thereby obtaining a foamed polymer; and (C) a step of heating and drying the foamed polymer, wherein gas bubbles are incorporated such that the volumetric expansion factor defined by the following formula (1); [Formula 1] Volumetric expansion factor=(Volume of aqueous monomer solution after gas bubble dispersion)/(volume of aqueous mononer solution before gas bubble dispersion)  Formula (1); exceeds 1.1 times, and the aqueous monomer solution having a monomer concentration defined by the following formula (2); [Formula 2] Monomer concentration [wt %]=(Weight of a monomer)/{(weight of a monomer)+(weight of solvent)}×100   Formula (2); of 40% by weight or greater is boiling polymerized at a temperature of 100° C. or higher.

摘要翻译： 提供一种通过更方便的方法促进发泡聚合物（泡沫状吸水性树脂）中形成互连空隙（连续气泡）的吸水性树脂的制造方法，高效率地制造吸水性树脂 即使在卫生用品等中成为片状或粉末状时，也显示出高的吸水率。 本发明提供一种聚丙烯酸型吸水性树脂的制造方法，其特征在于，包括：（A）获得含有分散在其中的气泡的丙烯酸型单体的水溶液的工序; （B）使单体水溶液聚合，得到发泡聚合物的工序; 和（C）加热和干燥发泡聚合物的步骤，其中加入气泡，使得由下式（1）定义的体积膨胀系数; [式1]体积膨胀系数=（气泡分散后的单体水溶液的体积）/（气泡分散前的单体溶液的体积）式（1） 超过1.1倍，单体浓度由下式（2）定义的单体水溶液; [式2]单体浓度[wt％] =（单体重量）/ {（单体重量）+（溶剂重量）}×100式（2） 为40重量％以上时，在100℃以上的温度下进行沸腾聚合。

公开(公告)号：US20130101851A1

公开(公告)日：2013-04-25

申请号：US13807530

申请日：2011-06-29

申请人： Toshihiro Takaai ,  Hidenori Wada ,  Shinichi Fujino

发明人： Toshihiro Takaai ,  Hidenori Wada ,  Shinichi Fujino

IPC分类号： C08F20/00

CPC分类号： C08J9/122 ,  A61L15/24 ,  A61L15/60 ,  C08F2/01 ,  C08F20/00 ,  C08F220/06 ,  C08J3/245 ,  C08J9/20 ,  C08J9/36 ,  C08J2203/06 ,  C08J2205/05 ,  C08J2333/02 ,  C08J2335/02 ,  Y10T428/2982 ,  C08L33/02 ,  C08F2222/1013

摘要： Provided is a method for producing a water absorbent resin, which promotes the formation of interconnected voids (continuous gas bubbles) in a foamed polymer (foam-like water absorbent resin) by a more convenient method, and produces with high efficiency a water absorbent resin which exhibits a high water absorption rate even when stepped into a sheet form or a powder form in hygiene articles and the like. Disclosed is a a method for producing a polyacrylic acid-type water absorbent resin, comprising (A) a step of obtaining an aqueous solution of acrylic acid-type monomers containing gas bubbles dispersed therein; (B) a step of polymerizing the aqueous monomer solution and thereby obtaining a foamed polymer; and (C) a step of heating and drying the foamed polymer, wherein gas bubbles are incorporated such that the volumetric expansion factor defined by the following formula (1); [Formula 1] Volumetric expansion factor=(Volume of aqueous monomer solution after gas bubble dispersion)/(volume of aqueous monomer solution before gas bubble dispersion)   Formula (1) ; exceeds 1.1 times, and the aqueous monomer solution having a monomer concentration defined by the following formula (2); [Formula 2] Monomer concentration [wt %]=(Weight of a monomer)/{(weight of a monomer)+(weight of solvent)}×100   Formula (2) ; of 40% by weight or greater is boiling polymerized at a temperature of 100° C. or higher.

摘要翻译： 提供一种通过更方便的方法促进发泡聚合物（泡沫状吸水性树脂）中形成互连空隙（连续气泡）的吸水性树脂的制造方法，高效率地制造吸水性树脂 即使在卫生用品等中成为片状或粉末状时，也显示出高的吸水率。 本发明提供一种聚丙烯酸型吸水性树脂的制造方法，其特征在于，包括：（A）获得含有分散在其中的气泡的丙烯酸型单体的水溶液的工序; （B）使单体水溶液聚合，得到发泡聚合物的工序; 和（C）加热和干燥发泡聚合物的步骤，其中加入气泡，使得由下式（1）定义的体积膨胀系数; [式1]体积膨胀系数=（气泡分散后的单体水溶液体积）/（气泡分散前的单体溶液的体积）式（1） 超过1.1倍，单体浓度由下式（2）定义的单体水溶液; [式2]单体浓度[wt％] =（单体重量）/ {（单体重量）+（溶剂重量）}×100式（2） 为40重量％以上时，在100℃以上的温度下进行沸腾聚合。

公开(公告)号：US09321855B2

公开(公告)日：2016-04-26

申请号：US13574281

申请日：2011-01-20

申请人： Toshihiro Takaai ,  Shinichi Fujino ,  Hidenori Wada

发明人： Toshihiro Takaai ,  Shinichi Fujino ,  Hidenori Wada

IPC分类号： C08J9/28 ,  C08F6/00 ,  A61L15/60 ,  B01J20/26 ,  B01J20/28 ,  C08J3/24 ,  C08F20/06 ,  C08F20/04 ,  C08J3/12

CPC分类号： C08F6/008 ,  A61L15/60 ,  B01J20/267 ,  B01J20/28004 ,  B01J20/28047 ,  B01J2220/68 ,  C08F6/006 ,  C08F20/04 ,  C08F20/06 ,  C08J3/12 ,  C08J3/245 ,  C08J9/28 ,  C08J2300/14 ,  C08J2333/02 ,  C08L33/02

摘要： In a method for producing a water absorbent resin by drying a particulate hydrogel having a high solid content concentration (of 45% by weight or more, preferably 50% by weight or more, and more preferably 55% by weight or more), a method for efficient drying water absorbent resin having maintained/improved physical properties is provided. Disclosed is a method for producing a water absorbent resin, comprising: a polymerization step to polymerize an unsaturated monomer, and; a drying step to dry a particulate hydrogel crosslinked polymer, which is obtained by micronization of a hydrogel polymer during or after the polymerization and which has a solid content concentration of 45% by weight or more, wherein, an amount of a peroxide in the particulate hydrogel crosslinked polymer to be dried in the drying step is 1 to 100 ppm relative to the weight of the solid content of the particulate hydrogel crosslinked polymer, and a drying temperature of the particulate hydrogel crosslinked polymer in the drying step is 160° C. or more.

摘要翻译： 在通过干燥具有高固含量浓度（45重量％以上，优选50重量％以上，更优选55重量％以上）的颗粒状水凝胶制造吸水性树脂的方法中， 提供了具有保持/改善的物理性能的高效干燥吸水性树脂。 公开了一种吸水性树脂的制造方法，其特征在于，包括：使不饱和单体聚合的聚合工序; 干燥步骤，其干燥颗粒状水凝胶交联聚合物，其通过在聚合期间或之后微粒化水凝胶聚合物并且固体成分浓度为45重量％以上，其中颗粒中的过氧化物的量 在干燥步骤中要干燥的水凝胶交联聚合物相对于颗粒状水凝胶交联聚合物的固体含量的重量为1至100ppm，干燥步骤中颗粒状水凝胶交联聚合物的干燥温度为160℃，或 更多。

公开(公告)号：US08623994B2

公开(公告)日：2014-01-07

申请号：US13574271

申请日：2011-01-20

申请人： Toshihiro Takaai ,  Shinichi Fujino ,  Hidenori Wada

发明人： Toshihiro Takaai ,  Shinichi Fujino ,  Hidenori Wada

IPC分类号： C08G63/02

CPC分类号： C08F6/008 ,  A61L15/60 ,  B01J20/267 ,  B01J2220/68 ,  C08J3/075 ,  C08J3/12 ,  C08J3/122 ,  C08J2300/14

摘要： With regard to a method for producing a water absorbent resin by drying a particulate hydrogel crosslinked polymer having a high solid content concentration (of 45% by weight or more, further 50% by weight or more, and particularly 55% by weight or more), to provide a method for efficient drying of a water absorbent resin having maintained/improved physical properties.A production method in which a through-circulation belt type dryer or a through-circulation stationary batch type dryer is used in the drying step and the drop and scatter ratio of a particulate hydrogel crosslinked polymer is set to 1% by weight or less.

摘要翻译： 关于通过干燥具有高固含量浓度（45重量％以上，进一步50重量％以上，特别是55重量％以上）的颗粒状水凝胶交联聚合物来制造吸水性树脂的方法， ，以提供一种有效干燥维持/改善的物理性能的吸水性树脂的方法。 在干燥步骤中使用贯通循环带式干燥机或贯通循环静态间歇式干燥机的制造方法，将水凝胶交联聚合物的滴落分散比设定为1重量％以下。

公开(公告)号：US20120289671A1

公开(公告)日：2012-11-15

申请号：US13574271

申请日：2011-01-20

申请人： Toshihiro Takaai ,  Shinichi Fujino ,  Hidenori Wada

发明人： Toshihiro Takaai ,  Shinichi Fujino ,  Hidenori Wada

IPC分类号： C08F120/06

CPC分类号： C08F6/008 ,  A61L15/60 ,  B01J20/267 ,  B01J2220/68 ,  C08J3/075 ,  C08J3/12 ,  C08J3/122 ,  C08J2300/14

摘要： With regard to a method for producing a water absorbent resin by drying a particulate hydrogel crosslinked polymer having a high solid content concentration (of 45% by weight or more, further 50% by weight or more, and particularly 55% by weight or more), to provide a method for efficient drying of a water absorbent resin having maintained/improved physical properties.A production method in which a through-circulation belt type dryer or a through-circulation stationary batch type dryer is used in the drying step and the drop and scatter ratio of a particulate hydrogel crosslinked polymer is set to 1% by weight or less.

摘要翻译： 关于通过干燥具有高固含量浓度（45重量％以上，进一步50重量％以上，特别是55重量％以上）的颗粒状水凝胶交联聚合物来制造吸水性树脂的方法， ，以提供一种有效干燥维持/改善的物理性能的吸水性树脂的方法。 在干燥步骤中使用贯通循环带式干燥机或贯通循环静态间歇式干燥机的制造方法，将水凝胶交联聚合物的滴落分散比设定为1重量％以下。

公开(公告)号：US08802800B2

公开(公告)日：2014-08-12

申请号：US13392698

申请日：2010-08-30

申请人： Shinichi Fujino ,  Kozo Nogi ,  Kunihiko Ishizaki

发明人： Shinichi Fujino ,  Kozo Nogi ,  Kunihiko Ishizaki

IPC分类号： C08F2/00 ,  C08F20/06

CPC分类号： C08J3/12 ,  C08J3/245 ,  C08J2300/14 ,  C08J2333/02

摘要： A production method for a water-absorbent resin, comprising a polymerization step for obtaining hydrogel by subjecting a monomer aqueous solution to a polymerization reaction, and a drying step for drying the hydrogel, wherein drying in the drying step is performed using a continuous through-flow belt-type drying machine, the pore opening rate of the through-flow belt in the continuous through-flow belt-type drying machine is 20 to 50%, the solid content of the hydrogel supplied to the drying step is 35% by weight or more, and the area occupancy rate of the hydrogel is 85 to 100% relative to the through-flow belt.

摘要翻译： 一种吸水性树脂的制造方法，其特征在于，包括通过使单体水溶液进行聚合反应而得到水凝胶的聚合工序和干燥水凝胶的干燥工序，干燥工序中的干燥是使用连续通孔 流式带式干燥机，连续通流式带式干燥机中通流带的开孔率为20〜50％，供给干燥工序的水凝胶的固体成分为35重量％ 以上，相对于贯流带，水凝胶的面积占有率为85〜100％。

公开(公告)号：US20130123435A1

公开(公告)日：2013-05-16

申请号：US13635045

申请日：2011-03-17

申请人： Sumio Okuda ,  Syuji Kanzaki ,  Kunihiko Ishizaki ,  Shinichi Fujino ,  Kozo Nogi

发明人： Sumio Okuda ,  Syuji Kanzaki ,  Kunihiko Ishizaki ,  Shinichi Fujino ,  Kozo Nogi

IPC分类号： C08J3/24

CPC分类号： C08F120/06 ,  B07B1/28 ,  B07B1/54 ,  B07B1/56 ,  B07B13/16 ,  C08F6/008 ,  C08F220/06 ,  C08J3/24 ,  C08J3/245 ,  C08J2300/14 ,  G01N15/0272 ,  G01N2015/0277 ,  G01N2015/0288

摘要： Provided is a method which does not require alteration of the raw materials or high capital investment, and improves and stabilizes the physical property (for example, liquid permeability) of a water absorbent resin by means of a simple technique. A method for producing a water absorbent resin is disclosed, which method includes a polymerization step of polymerizing an aqueous solution of acrylic acid (salt) to obtain a water-containing gel-like crosslinked polymer; a drying step of drying the water-containing gel-like crosslinked polymer to obtain a water absorbent resin powder; a classification step of classifying the water absorbent resin powder; and a surface crosslinking step of surface crosslinking the water absorbent resin powder, wherein in the classification steps that are carried before the surface crosslinking step and/or after the surface crosslinking step, the stretch tension (tension) of the metal sieve mesh used in the classification step is from 35 [N/cm] to 100 [N/cm].

摘要翻译： 提供了不需要改变原材料或高资本投资的方法，并且通过简单的技术提高和稳定吸水性树脂的物理性能（例如，透液性）。 公开了一种吸水性树脂的制造方法，该方法包括聚合丙烯酸（盐）水溶液以获得含水凝胶状交联聚合物的聚合步骤; 干燥步骤，干燥含水凝胶状交联聚合物以获得吸水性树脂粉末; 吸水性树脂粉末的分类步骤; 和表面交联吸水性树脂粉末的表面交联步骤，其中在表面交联步骤之前和/或表面交联步骤之后承载的分级步骤中，所用的金属筛网的拉伸张力（张力） 分级步骤为35 [N / cm]至100 [N / cm]。