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    • 1. 发明申请
    • Method for Producing Water Absorbent Resin Particle
    • 生产吸水树脂颗粒的方法
    • US20090305884A1
    • 2009-12-10
    • US12296808
    • 2007-09-28
    • Shigeru SakamotoYoshio IrieHiroyuki IkeuchiMakoto NagasawaKunihiko IshizakiSayaka Machida
    • Shigeru SakamotoYoshio IrieHiroyuki IkeuchiMakoto NagasawaKunihiko IshizakiSayaka Machida
    • B01J20/26
    • C08J3/12B29B9/06B29B17/00C08J2300/14Y02W30/62
    • The present invention provides a method for producing a water absorbent resin particle, in high productivity, not only in a controlled manner of particle size but also enhancing fundamental property (absorption capacity or absorption capacity against pressure) of a water absorbent resin. A method for producing a water absorbent resin particle having the cross-linking polymerization step for an aqueous solution of an unsaturated monomer; the grain refining step for water-swellable, water-containing gel-like cross-linked polymer (a) obtained in the cross-linking polymerization step; the drying step for grain refined gel; and the crushing step for a dried substance, wherein, in the grain refining step for the water-swellable, water-containing gel-like cross-linked polymer (a), water-swellable, water-containing gel-like cross-linked polymer (b), having solid content or centrifuge retention capacity different from solid content or centrifuge retention capacity of the cross-linked polymer (a) by equal to or larger than 1%, is subjected to coexistence.
    • 本发明提供了一种生产吸水性树脂颗粒的方法,不仅以受控的粒度控制,而且提高了吸水性树脂的基本性能(吸收能力或抗吸收能力)。 一种制备具有用于不饱和单体的水溶液的交联聚合步骤的吸水性树脂颗粒的方法; 在交联聚合步骤中获得的水溶胀性含水凝胶状交联聚合物(a)的晶粒细化步骤; 颗粒精制凝胶的干燥步骤; 和干物质的破碎步骤,其中在水溶胀性含水凝胶状交联聚合物(a)的晶粒细化工序中,水溶胀性含水凝胶状交联聚合物 (b)具有不同于交联聚合物(a)的固体含量或离心保留能力等于或大于1%的固体含量或离心保留能力共存。
    • 2. 发明授权
    • Method for producing water absorbent resin particle
    • 吸水性树脂颗粒的制造方法
    • US09593212B2
    • 2017-03-14
    • US12296808
    • 2007-09-28
    • Shigeru SakamotoYoshio IrieHiroyuki IkeuchiMakoto NagasawaKunihiko IshizakiSayaka Machida
    • Shigeru SakamotoYoshio IrieHiroyuki IkeuchiMakoto NagasawaKunihiko IshizakiSayaka Machida
    • C08J3/12B29B17/00
    • C08J3/12B29B9/06B29B17/00C08J2300/14Y02W30/62
    • The present invention provides a method for producing a water absorbent resin particle, in high productivity, not only in a controlled manner of particle size but also enhancing fundamental property (absorption capacity or absorption capacity against pressure) of a water absorbent resin. A method for producing a water absorbent resin particle having the cross-linking polymerization step for an aqueous solution of an unsaturated monomer; the grain refining step for water-swellable, water-containing gel-like cross-linked polymer (a) obtained in the cross-linking polymerization step; the drying step for grain refined gel; and the crushing step for a dried substance, wherein, in the grain refining step for the water-swellable, water-containing gel-like cross-linked polymer (a), water-swellable, water-containing gel-like cross-linked polymer (b), having solid content or centrifuge retention capacity different from solid content or centrifuge retention capacity of the cross-linked polymer (a) by equal to or larger than 1%, is subjected to coexistence.
    • 本发明提供了一种生产吸水性树脂颗粒的方法,不仅以受控的粒度控制,而且提高了吸水性树脂的基本性能(吸收能力或抗吸收能力)。 一种制备具有用于不饱和单体的水溶液的交联聚合步骤的吸水性树脂颗粒的方法; 在交联聚合步骤中获得的水溶胀性含水凝胶状交联聚合物(a)的晶粒细化步骤; 颗粒精制凝胶的干燥步骤; 和干物质的破碎步骤,其中在水溶胀性含水凝胶状交联聚合物(a)的晶粒细化工序中,水溶胀性含水凝胶状交联聚合物 (b)具有不同于交联聚合物(a)的固体含量或离心保留能力等于或大于1%的固体含量或离心保留能力共存。
    • 3. 发明申请
    • PRODUCTION METHOD FOR WATER-ABSORBING RESIN POWDER
    • 吸水树脂粉的生产方法
    • US20120220745A1
    • 2012-08-30
    • US13496440
    • 2010-09-16
    • Sayaka MachidaKazushi ToriiYoko ShiraiHiroyuki IkeuchiKunihiko Ishizaki
    • Sayaka MachidaKazushi ToriiYoko ShiraiHiroyuki IkeuchiKunihiko Ishizaki
    • C08F20/06
    • C08J3/28C08F220/06C08F222/1006C08J3/122C08J3/245C08J2300/00
    • [PROBLEM]It is an object of the present invention to enhance and stabilize properties of a water-absorbing resin, for example, damage resistance or water-absorbing speed, by a simple and convenient method without requiring change of raw materials or expensive facility investment, in a large scale production method for the water-absorbing resin.[MEANS FOR SOLVING THE PROBLEM]It is solved by circulation of the water-absorbing resin in a predetermined amount or more in the pulverization step before the surface cross-linking step. That is, at least a part of the classified polymer is supplied again to the same or different pulverization step, before the surface cross-linking step, wherein circulation pulverization ratio in the pulverization step, represented by the following equation is larger than 1.50: (Circulation pulverization ratio)=(total supply amount of the water-absorbing resin to the pulverization step)/(total discharge amount of the water-absorbing resin at the drying step) (wherein total supply amount of the water-absorbing resin to the pulverization step)=(total discharge amount of the water-absorbing resin at the drying step)+(amount of the classified polymer supplied again to the same or different pulverization step)).
    • 本发明的目的是通过简单方便的方法来增强和稳定吸水树脂的性能,例如耐损伤性或吸水速度,而不需要改变原料或昂贵的设备投资 在大量的吸水树脂的制造方法中。 解决问题的手段通过在表面交联工序之前的粉碎工序中使吸水性树脂循环一定量以上来解决。 也就是说,在表面交联步骤之前,将分类的聚合物的至少一部分再次供给到相同或不同的粉碎步骤,其中由下式表示的粉碎步骤中的循环粉碎比大于1.50:( 循环粉碎比)=(粉碎步骤中的吸水性树脂的总供给量)/(干燥工序中的吸水性树脂的总排出量)(其中,吸水性树脂与粉碎的总供给量 步骤)=(干燥步骤中的吸水性树脂的总排出量)+(再次供给相同或不同的粉碎步骤的分类聚合物的量))。
    • 5. 发明申请
    • PRODUCTION METHOD FOR WATER-ABSORBING RESIN POWDER
    • 吸水树脂粉的生产方法
    • US20120220733A1
    • 2012-08-30
    • US13395912
    • 2010-09-16
    • Sayaka MachidaKazushi ToriiYoko ShiraiHiroyuki IkeuchiKunihiko Ishizaki
    • Sayaka MachidaKazushi ToriiYoko ShiraiHiroyuki IkeuchiKunihiko Ishizaki
    • C08F120/06C08F2/10C08F6/12
    • C08J3/28C08F220/06C08F222/1006C08J3/122C08J3/245C08J2300/00
    • [PROBLEM]It is an object of the present invention to enhance and stabilize properties of a water-absorbing resin, for example, damage resistance or water-absorbing speed, by a simple and convenient method without requiring change of raw materials or expensive facility investment, in a large scale production method for the water-absorbing resin.[MEANS FOR SOLVING THE PROBLEM]It is solved by circulation of the water-absorbing resin in a predetermined amount or more in the pulverization step before the surface cross-linking step. That is, at least a part of the classified polymer is supplied again to the same or different pulverization step, before the surface cross-linking step, wherein circulation pulverization ratio in the pulverization step, represented by the following equation is 1.10 to 1.50: (Circulation pulverization ratio)=(total supply amount of the water-absorbing resin to the pulverization step)/(total discharge amount of the water-absorbing resin at the drying step) (wherein total supply amount of the water-absorbing resin to the pulverization step)=(total discharge amount of the water-absorbing resin at the drying step)+(amount of the classified polymer supplied again to the same or different pulverization step)).
    • 本发明的目的是通过简单方便的方法来增强和稳定吸水树脂的性能,例如耐损伤性或吸水速度,而不需要改变原料或昂贵的设备投资 在大量的吸水树脂的制造方法中。 解决问题的手段通过在表面交联工序之前的粉碎工序中使吸水性树脂循环一定量以上来解决。 也就是说,在表面交联步骤之前,将分类的聚合物的至少一部分再次供给到相同或不同的粉碎步骤,其中由下式表示的粉碎步骤中的循环粉碎比为1.10至1.50:( 循环粉碎比)=(粉碎步骤中的吸水性树脂的总供给量)/(干燥工序中的吸水性树脂的总排出量)(其中,吸水性树脂与粉碎的总供给量 步骤)=(干燥步骤中的吸水性树脂的总排出量)+(再次供给相同或不同的粉碎步骤的分类聚合物的量))。
    • 9. 发明申请
    • Aqueous-Liquid-Absorbing Agent and its Production Process
    • 水性吸液剂及其制备方法
    • US20070207924A1
    • 2007-09-06
    • US10593706
    • 2005-03-11
    • Hiroyuki IkeuchiKazushi ToriiShigeru SakamotoTaku IwamuraSayaka Machida
    • Hiroyuki IkeuchiKazushi ToriiShigeru SakamotoTaku IwamuraSayaka Machida
    • B01J20/26
    • C08J3/245
    • An object of the present invention is to provide an aqueous-liquid-absorbing agent which comprises water-absorbent resin particles as essential components and is suitable for uses in sanitary materials. As a means of achieving this object, an aqueous-liquid-absorbing agent according to the present invention is an aqueous-liquid-absorbing agent comprising water-absorbent resin particles as essential components, wherein the water-absorbent resin particles are obtained by a process including the step of polymerizing a water-soluble ethylenically unsaturated monomer and have a crosslinked structure in their inside; with the aqueous-liquid-absorbing agent exhibiting an absorption rate (FSR) of not less than 0.2 g/g/s, a water absorption capacity (CRC) of 5 to 25 g/g, a saline flow conductivity (SFC) of not less than 400×10−7 cm3·s/g, and a wet porosity of not less than 20%. A process according to the present invention for obtaining such an aqueous-liquid-absorbing agent is characterized by comprising the steps of: obtaining a hydrogel from an aqueous monomer solution including a water-soluble ethylenically unsaturated monomer and an internal-crosslinking agent of not less than 0.2 mol % in ratio to the monomer; and then extruding this hydrogel from a perforated structure having perforation diameters in the range of 0.3 to 6.4 mm to thereby pulverize the hydrogel.
    • 本发明的目的是提供一种含水吸收剂,其包含作为必需成分的吸水性树脂粒子,适用于卫生材料。 作为实现该目的的手段,本发明的水性液体吸收剂是以吸水性树脂粒子为必须成分的水性液体吸收剂,其中吸水性树脂粒子是通过 包括聚合水溶性烯键式不饱和单体并在其内部具有交联结构的步骤; 吸水率(FSR)为0.2g / g / s以上,吸水容量(CRC)为5〜25g / g,盐水流动电导率(SFC)不为 小于400×10 -3 cm 3 / g,湿气孔率不小于20%。 根据本发明的用于获得这种水性液体吸收剂的方法的特征在于包括以下步骤:从包含水溶性烯键式不饱和单体和不少于少量的内部交联剂的单体水溶液获得水凝胶 与单体的比例为0.2摩尔%以上; 然后从穿孔直径在0.3至6.4mm范围内的穿孔结构体挤出该水凝胶,从而粉碎水凝胶。