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    METHOD FOR PRODUCING POLYACRYLIC ACID (SALT)-BASED WATER ABSORBENT RESIN POWDER
    42.
    发明申请
    METHOD FOR PRODUCING POLYACRYLIC ACID (SALT)-BASED WATER ABSORBENT RESIN POWDER 有权
    生产聚丙烯酸（盐） - 水吸收树脂粉末的方法

    公开(公告)号：US20130102750A1

    公开(公告)日：2013-04-25

    申请号：US13643682

    申请日：2011-04-27

    申请人： Yusuke Watanabe ,  Kazushi Torii ,  Kozo Nogi ,  Kunihiko Ishizaki ,  Reiko Nakatsuru ,  Shigeru Sakamoto

    发明人： Yusuke Watanabe ,  Kazushi Torii ,  Kozo Nogi ,  Kunihiko Ishizaki ,  Reiko Nakatsuru ,  Shigeru Sakamoto

    IPC分类号： C08J3/12 ,  C08F122/10

    CPC分类号： C08J3/12 ,  C08F6/008 ,  C08F122/105 ,  C08F220/06 ,  C08J3/122 ,  C08J3/245 ,  C08J2333/02 ,  C08L33/02

    摘要： A water absorbent resin having less fine powder or powdery dust and a controlled particle size is provided, and the water absorption rate of the water absorbent resin is increased by a simple method at low cost, while maintaining or improving other physical properties such as liquid permeability. Disclosed is a method for producing a polyacrylic acid (salt)-type water absorbent resin powder, which includes, in sequence, a step of polymerizing an aqueous solution of acrylic acid (salt)-type monomer; a step of gel-crushing a gel of a water-containing gel-like crosslinked polymer during polymerization or after polymerization; a step of drying the water-containing gel-like crosslinked polymer; and a step of pulverizing and classifying the dried polymer, wherein water absorbent resin fine particles having a particle size of less than 150 μm or a hydrated-particles thereof is added to a step prior to the drying step, and in the drying step, hot air drying is carried out with a hot air having an average flow velocity of 1.0 to 3.0 [m/s], a dew point of 30° C. to 100° C., and a hot air temperature of 140° C. to 235° C.

    摘要翻译： 提供具有较少粉末或粉末粉尘和受控粒度的吸水性树脂，并且通过简单的方法以低成本提高吸水性树脂的吸水率，同时保持或改善其它物理性质如液体渗透性 。 公开了一种聚丙烯酸（盐）型吸水性树脂粉末的制造方法，其中，依次包括使丙烯酸（盐）型单体的水溶液聚合的工序; 在聚合过程中或聚合后凝胶化凝胶状凝胶状交联聚合物凝胶的步骤; 干燥含水凝胶状交联聚合物的工序; 以及将干燥聚合物粉碎分级的步骤，其中将粒径小于150μm的吸水性树脂细颗粒或其水合物颗粒加入到干燥步骤之前的步骤中，并且在干燥步骤中，热 使用平均流速为1.0〜3.0 [m / s]，露点为30℃〜100℃，热风温度为140℃〜235℃的热风进行空气干燥 C。

    WATER ABSORBING RESIN WITH IMPROVED INTERNAL STRUCTURE AND MANUFACTURING METHOD THEREFOR
    44.
    发明申请
    WATER ABSORBING RESIN WITH IMPROVED INTERNAL STRUCTURE AND MANUFACTURING METHOD THEREFOR 有权
    具有改进的内部结构和制造方法的吸水树脂

    公开(公告)号：US20090208748A1

    公开(公告)日：2009-08-20

    申请号：US12294325

    申请日：2007-03-20

    申请人： Kazushi Torii ,  Hirofumi Shibata

    发明人： Kazushi Torii ,  Hirofumi Shibata

    IPC分类号： B32B5/16 ,  C08F20/06

    CPC分类号： B01J20/26 ,  A61L15/60 ,  B01J20/261 ,  B01J20/267 ,  B01J2220/68 ,  C08F220/06 ,  C08F222/1006 ,  Y10T428/2982

    摘要： According to the present invention, the manufacturing method for the water absorbing resin involves the step of polymerizing a water-soluble unsaturated monomer, 0.06 of 5 mol % of which is composed of an internal crosslinking agent; and the step of drying a water-containing gel which has a thermally decomposing radical initiator content index of 40 to 100 at 100 to 250° C. The water absorbing resin of the present invention contains a water-soluble unsaturated monomer as a repeat unit for a major chain, 90 mol % of the monomer being composed of an acrylic acid and/or salt thereof, the resin having an internal crosslinking structure and exhibiting a weight-average molecular weight Mw of 360,000 to 1,000,000 daltons and an intrinsic viscosity IV of 2.1 to 6.0 dL/g where the weight-average molecular weight Mw and the intrinsic viscosity IV are measured after treatment under set 2 of hydrolysis conditions.

    摘要翻译： 根据本发明，吸水性树脂的制造方法包括聚合水溶性不饱和单体的步骤，其中5摩尔％的0.06是由内部交联剂组成的步骤; 以及在100〜250℃下热分解自由基引发剂含量指数为40〜100的含水凝胶的干燥工序。本发明的吸水性树脂含有作为重复单元的水溶性不饱和单体， 主链，90摩尔％的单体由丙烯酸和/或其盐组成，该树脂具有内部交联结构并且显示重均分子量Mw为360,000至1,000,000道尔顿，特性粘度IV为2.1 至6.0dL / g，其中在设定的水解条件2下处理后测量重均分子量Mw和特性粘度IV。

    Water-absorbing agent and production process therefor, and water-absorbent structure
    45.
    发明授权
    Water-absorbing agent and production process therefor, and water-absorbent structure 有权
    吸水剂及其生产工艺及吸水结构

    公开(公告)号：US07495056B2

    公开(公告)日：2009-02-24

    申请号：US11449656

    申请日：2006-06-09

    申请人： Kazushi Torii ,  Toshimasa Kitayama ,  Nobuyuki Harada

    发明人： Kazushi Torii ,  Toshimasa Kitayama ,  Nobuyuki Harada

    IPC分类号： C08F16/00 ,  C08F2/10 ,  C08B31/00 ,  C08L39/02

    CPC分类号： A61F13/531 ,  A61F2013/530708 ,  A61F2013/530788 ,  A61L15/24 ,  A61L15/60 ,  B01J20/26 ,  B01J20/261 ,  B01J20/267 ,  B01J2220/68 ,  C08L33/02 ,  C08L3/02

    摘要： The present invention provides: a novel water-absorbing agent, which exhibits an excellent absorption capacity under a load (AAP), gel layer liquid permeation rate under a load (FRUP), saline flow conductivity (SFC), and shape-maintaining property and ball burst strength (BBS) of a swollen water-absorbing agent aggregate, and excellent persistency of these effects for a long time. The water-absorbing agent, which comprises a polymer obtained by a process including the steps of polymerizing and then crosslinking a monomer including acrylic acid and/or a salt thereof, with the water-absorbing agent being characterized by: (1) exhibiting a free swelling capacity of not less than 23 g/g (GV), a gel deformation of not more than 12.5 cm under a short-time load (0.5 hrPT), and a gel deformation deterioration of not more than 3.5 cm under a load with the passage of time (ΔPT); (2) exhibiting a free swelling capacity of not less than 23 g/g (GV), a ball burst strength of not less than 80 gf (BBS), and a deterioration of ball burst strength of not more than 40% (DBBS); or (3) exhibiting a free swelling capacity of not less than 23 g/g (GV), an absorption capacity of not less than 20 g/g under a load of 4.9 kPa (AAP), and a gel deformation of not more than 12.5 cm under a load (16 hrPT).

    摘要翻译： 本发明提供：在负荷（AAP），载荷下的凝胶层液体渗透速率（FRUP），盐水导电率（SFC）和形状维持性等方面表现出优异的吸收容量的新型吸水剂， 膨胀吸水剂聚集体的球破裂强度（BBS），长时间保持这些效果的持久性。 包含通过包括使包含丙烯酸和/或其盐在内的单体聚合然后将其与所述吸水剂交联的方法获得的聚合物的吸水剂的特征在于：（1） 溶胀能力不小于23g / g（GV），在短时间负荷（0.5hrPT）下凝胶变形不超过12.5cm，凝胶变形劣化不大于3.5cm， 时间流逝（DeltaPT）; （2）表现出不小于23g / g（GV）的游离膨胀能力，不高于80gf（BBS）的球破裂强度和不大于40％的球爆裂强度的劣化（DBBS） ; 或（3）在4.9kPa（AAP）的载荷下表现出不小于23g / g（GV）的游离溶胀能力，不低于20g / g的吸收能力，凝胶变形不大于 负荷为12.5厘米（16小时）。

    Polyacrylic acid (salt)-based water absorbent resin powder and method for producing the same
    46.
    发明授权
    Polyacrylic acid (salt)-based water absorbent resin powder and method for producing the same 有权
    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

    Water absorbent resin production method and usage thereof
    48.
    发明申请
    Water absorbent resin production method and usage thereof 有权
    吸水树脂的制造方法及其用途

    公开(公告)号：US20100041824A1

    公开(公告)日：2010-02-18

    申请号：US12530976

    申请日：2008-03-14

    申请人： Kazushi Torii ,  Taishi Kobayashi

    发明人： Kazushi Torii ,  Taishi Kobayashi

    IPC分类号： C08L33/02 ,  C08G69/00 ,  C08G63/00

    CPC分类号： C08J3/245 ,  B01J20/267 ,  C08F20/06 ,  C08J2333/02 ,  C08L33/02 ,  C08L71/02 ,  C08L2666/22

    摘要： A method for producing a water absorbent resin comprises the steps of: (i) polymerizing a monomer including an unsaturated monomer containing a carboxyl group, in the presence of an internal cross-linking agent (A) having two or more radical polymerizable unsaturated groups in its single molecule and in the presence of a non-polymeric internal cross-linking agent (B) having in its single molecule two or more functional groups each of which allows formation of an ester bond or an amide bond by reacting with a carboxyl group so as to obtain a cross-linked polymer hydrogel; (ii) crushing the cross-linked polymer hydrogel obtained in the step (i); and (iii) drying crushed cross-linked polymer hydrogel products obtained in the step (ii), wherein: an amount of the internal cross-linking agent (A) is 0.01 mol % or more and 0.2 mol % or less relative to an amount of the unsaturated monomer containing a carboxyl group, and a molar ratio (B)/(A) of the internal cross-linking agent (A) and the non-polymeric internal cross-linking agent (B) is 0.01 or more and 1.8 or less.

    摘要翻译： 一种吸水性树脂的制造方法，其特征在于：（i）在具有2个以上自由基聚合性不饱和基团的内部交联剂（A）的存在下，使含有羧基的不饱和单体的单体聚合， 其单分子和在其单分子中具有两个或多个官能团的非聚合内部交联剂（B）的存在下，每个可通过与羧基反应形成酯键或酰胺键，因此 获得交联聚合物水凝胶; （ii）粉碎步骤（i）中获得的交联聚合物水凝胶; 和（iii）干燥步骤（ii）中获得的粉碎的交联聚合物水凝胶产物，其中：内部交联剂（A）的量相对于一定量的0.01mol％以上且0.2mol％以下 的含有羧基的不饱和单体，内部交联剂（A）与非聚合内部交联剂（B）的摩尔比（B）/（A）为0.01以上1.8以下 减。

    Water-absorbable polyacrylic acid resin powder, and process for production thereof
    49.
    发明授权
    Water-absorbable polyacrylic acid resin powder, and process for production thereof 有权
    吸水性聚丙烯酸树脂粉末及其制造方法

    公开(公告)号：US09334376B2

    公开(公告)日：2016-05-10

    申请号：US13518438

    申请日：2010-12-23

    申请人： Reiko Nakatsuru ,  Shigeru Sakamoto ,  Kazushi Torii ,  Toshihiro Takaai

    发明人： Reiko Nakatsuru ,  Shigeru Sakamoto ,  Kazushi Torii ,  Toshihiro Takaai

    IPC分类号： B01J20/26 ,  C08J3/12 ,  C08F220/06 ,  A61L15/48 ,  A61L15/60 ,  C08F20/06

    CPC分类号： C08J3/12 ,  A61L15/48 ,  A61L15/60 ,  C08F20/06 ,  C08F220/06 ,  C08J2333/08 ,  C08J2333/10 ,  C08L33/02

    摘要： A process according to the present invention for production of water-absorbable polyacrylic acid resin powder, including: (a) polymerizing an acrylic acid-based monomer aqueous solution containing bubbles, and (b) drying a hydrogel crosslinked polymer thus obtained in the step of polymerizing, further includes (c) lowering solubility of dissolved gas in a monomer aqueous solution in the presence of a surfactant and/or a dispersing agent, so as to generate the bubbles in the acrylic acid-based monomer aqueous solution. With this arrangement, it is possible to provide white water-absorbable resin with better water absorbing rate, keeping or without significantly losing the other properties (permeability potential, bulk specific gravity, surface tension, absorbency against pressure, impact resistance, etc.)

    摘要翻译： 根据本发明的用于制造吸水性聚丙烯酸树脂粉末的方法，包括：（a）使含有气泡的丙烯酸类单体水溶液聚合，和（b）将由此得到的水凝胶交联聚合物干燥， 聚合，还包括（c）在表面活性剂和/或分散剂存在下降低溶解气体在单体水溶液中的溶解度，以便在丙烯酸类单体水溶液中产生气泡。 通过这种布置，可以提供具有更好吸水率的白色吸水性树脂，保持或不显着损失其它性能（渗透性潜力，体积比重，表面张力，抗压力，耐冲击性等）

    Water absorbent resin production method, water absorbent resin, and usage thereof
    50.
    发明授权
    Water absorbent resin production method, water absorbent resin, and usage thereof 有权
    吸水性树脂制造方法，吸水性树脂及其用途

    公开(公告)号：US08383747B2

    公开(公告)日：2013-02-26

    申请号：US13252665

    申请日：2011-10-04

    申请人： Kazushi Torii ,  Taishi Kobayashi

    发明人： Kazushi Torii ,  Taishi Kobayashi

    IPC分类号： C08F120/06

    CPC分类号： C08J3/245 ,  B01J20/267 ,  C08F20/06 ,  C08J2333/02 ,  C08L33/02 ,  C08L71/02 ,  C08L2666/22

    摘要： A method for producing a water absorbent resin by (i) polymerizing a monomer including an unsaturated monomer containing a carboxyl group, in the presence of an internal cross-linking agent (A) having two or more radical polymerizable unsaturated groups and in the presence of a non-polymeric internal cross-linking agent (B) having two or more functional groups each allowing formation of an ester bond or an amide bond by reacting with a carboxyl group, while crushing a cross-linked polymer hydrogel; and (ii) drying the cross-linked polymer hydrogel of step (i), wherein: an amount of the internal cross-linking agent (A) is 0.01 mol % or more and 0.2 mol % or less relative to an amount of the unsaturated monomer containing a carboxyl group, and a molar ratio (B)/(A) of the internal cross-linking agent (A) and the non-polymeric internal cross-linking agent (B) is 0.01 or more and 1.8 or less.

    摘要翻译： 一种吸水性树脂的制造方法，其特征在于，在具有两个以上自由基聚合性不饱和基团的内部交联剂（A）的存在下，在（ⅰ）含有羧基的不饱和单体的单体的聚合反应中， 具有两个或更多个官能团的非聚合内部交联剂（B），各自通过与羧基反应形成酯键或酰胺键，同时粉碎交联的聚合物水凝胶; 和（ii）干燥步骤（i）的交联聚合物水凝胶，其中：内部交联剂（A）的量相对于不饱和物质的量为0.01摩尔％以上且0.2摩尔％以下 含有羧基的单体和内部交联剂（A）与非聚合内部交联剂（B）的摩尔比（B）/（A）为0.01以上且1.8以下。