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：US09580519B2

公开(公告)日：2017-02-28

申请号：US14112774

申请日：2012-04-20

申请人： Kozo Nogi ,  Syuji Kanzaki ,  Kunihiko Ishizaki ,  Shinichi Fujino ,  Satoshi Matsumoto

发明人： Kozo Nogi ,  Syuji Kanzaki ,  Kunihiko Ishizaki ,  Shinichi Fujino ,  Satoshi Matsumoto

IPC分类号： H01B1/00 ,  C08F2/18 ,  C08F220/06 ,  C08J99/00 ,  C08J3/12

CPC分类号： C08F2/18 ,  C08F220/06 ,  C08J3/12 ,  C08J2333/02

摘要： The purpose of the present invention is to provide a method for producing a water absorbent resin in which a water absorbent resin having excellent properties can be obtained effectively. The present invention relates to a method for producing a polyacrylic acid (salt)-based water absorbent resin, which includes a polymerization step of polymerizing an aqueous monomer solution containing a polymerization inhibitor, acrylic acid (salt) and an internal cross-linking agent to produce a water-containing gel-like cross-linked polymer, a gel-crushing step of performing the gel-crushing of the water-containing gel-like cross-linked polymer simultaneously with or subsequent to the polymerization to produce a particulate water-containing gel-like cross-linked polymer, and a drying step of supplying the particulate water-containing gel-like cross-linked polymer to a continuous through-flow belt-type dryer by a traverse conveyor to dry the particulate water-containing gel-like cross-linked polymer, in which the belt temperature of the traverse conveyor is 40 to 120° C. and/or the water soluble component in the particulate water-containing gel-like cross-linked polymer on the traverse conveyor is 10% by weight or less and the water soluble component is increased after the drying step.

摘要翻译： 本发明的目的是提供一种可以有效获得具有优异性能的吸水性树脂的吸水性树脂的制造方法。 本发明涉及一种聚丙烯酸（盐）系吸水性树脂的制造方法，其包括将含有聚合抑制剂，丙烯酸（盐）和内部交联剂的单体水溶液聚合的聚合工序， 产生含水凝胶状交联聚合物，在聚合反应或聚合后同时进行凝胶状破碎的凝胶状破碎工序，制成含水凝胶状交联聚合物 凝胶状交联聚合物，以及通过横动输送机将含粒状含水凝胶状交联聚合物供给到连续流通带式干燥机的干燥工序，干燥含水凝胶状的颗粒状凝胶状 横向传送带的带温度为40〜120℃的交联聚合物和/或该混合物中的颗粒状含水凝胶状交联聚合物中的水溶性成分 惰性输送机为10重量％以下，干燥后水溶性成分增加。

公开(公告)号：US09518133B2

公开(公告)日：2016-12-13

申请号：US13148359

申请日：2010-02-08

申请人： Shinichi Fujino ,  Satoshi Matsumoto ,  Kunihiko Ishizaki

发明人： Shinichi Fujino ,  Satoshi Matsumoto ,  Kunihiko Ishizaki

IPC分类号： C08F20/02 ,  C08F20/06 ,  C08F2/44 ,  C08F220/06

CPC分类号： C08F2/44 ,  C08F220/06

摘要： The physical properties of a water-absorbing resin with low residual monomer content are improved or stabilized, without sacrifices in productivity, production cost, stability, etc. Provided is a water-absorbing resin with low residual monomer content and excellent whiteness, wherein a water-absorbing resin consumed in large quantities in disposable diapers, etc., is preferably a sustainable and renewable water-absorbing resin that does not require excessive purification of the acrylic acid, particularly acrylic acids derived from non-fossil sources, that is the starting material of the water-absorbing resin. Disclosed is a method of manufacturing a hydrophilic polyacrylic acid (salt) resin, which is a method of manufacturing a water-absorbing polyacrylic acid resin that comprises a step in which a monomer is prepared from acrylic acid, a step in which said monomer is polymerized, and a step in which the resulting hydrous gel is dried. The polymerization is performed such that the content of hydroxypropionic acid (salt) in the monomer is 2000 ppm or less and/or the content of saturated organic carboxylic acid in the monomer is 2% by mass or less, and at least a portion of the saturated organic carboxylic acid is volatilized during and after the drying step.

摘要翻译： 具有低残留单体含量的吸水树脂的物理性能得到改善或稳定化，而不牺牲生产率，生产成本，稳定性等。提供了具有低残留单体含量和优异白度的吸水树脂，其中水 在一次性尿布等中大量消耗的吸收树脂优选是可持续且可再生的吸水树脂，其不需要过度纯化丙烯酸，特别是源自非化石源的丙烯酸，即起始材料 的吸水树脂。 公开了一种制造亲水性聚丙烯酸（盐）树脂的方法，其是制备吸水性聚丙烯酸树脂的方法，其包括其中单体由丙烯酸制备的步骤，所述单体聚合的步骤 ，以及将所得含水凝胶干燥的步骤。 进行聚合，使得单体中羟基丙酸（盐）的含量为2000ppm以下，和/或单体中的饱和有机羧酸的含量为2质量％以下，至少一部分 饱和有机羧酸在干燥步骤期间和之后挥发。