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    • 34. 发明授权
    • Particulate water-absorbent resin composition and its production process
    • 颗粒状吸水性树脂组合物及其制备方法
    • US07872076B2
    • 2011-01-18
    • US10577355
    • 2004-11-05
    • Hiroyuki IkeuchiKazushi ToriiTaku IwamuraSayaka MachidaHiroko Okochi
    • Hiroyuki IkeuchiKazushi ToriiTaku IwamuraSayaka MachidaHiroko Okochi
    • C08F120/06C08K5/053
    • C08J3/245A61L15/24A61L15/60C08J2333/02C08K5/053C08L33/02
    • An object of the present invention is to provide a particulate water-absorbent resin composition and its production process, wherein the particulate water-absorbent resin composition is an enhanced one in both of the “liquid permeability” and “liquid-sucking-up property” (which have hitherto been antithetical physical properties) of the water-absorbent resin. As a means of achieving this object, a first particulate water-absorbent resin composition according to the present invention is a particulate water-absorbent resin composition comprising a water-absorbent resin (A) of a crosslinked structure obtained by polymerizing an acid-group-containing unsaturated monomer, with the composition being characterized by: having a particle size such that particles in the range of 850 to 150 μm (but not including 850 μm) account for not less than 90 weight % of the entirety; and containing a tetra- or more functional polyol (B) at least on surfaces.
    • 本发明的目的在于提供一种颗粒状吸水性树脂组合物及其制造方法,其特征在于,所述颗粒状吸水性树脂组合物是“液体渗透性”和“吸液性” (其迄今为止为对称物理性质)的吸水性树脂。 作为实现该目的的手段,本发明的第一粒状吸水性树脂组合物是含有吸水性树脂(A)的颗粒状吸水性树脂组合物,所述吸水性树脂(A)是将酸 - 所述组合物的特征在于:具有使得在850〜150μm(但不包括850μm)范围内的颗粒占整个体积不小于90重量%的粒径; 并且至少在表面上含有四官能以上的多元醇(B)。
    • 35. 发明授权
    • Water-absorbing agent
    • 吸水剂
    • US07638570B2
    • 2009-12-29
    • US10544337
    • 2004-02-02
    • Kazushi ToriiYoshiro MitsukamiMotohiro ImuraTaku Iwamura
    • Kazushi ToriiYoshiro MitsukamiMotohiro ImuraTaku Iwamura
    • C08L31/02A61L15/60
    • C08J3/245A61L15/60Y10T428/2982
    • There is disclosed a water-absorbing agent which combines both performances of the capillary suction force and the liquid permeability. This water-absorbing agent is a particulate water-absorbing agent comprising water-absorbent resin particles (α) and a liquid-permeability-enhancing agent (β), wherein the water-absorbent resin particles (α) are surface-crosslink-treated particles of a crosslinked polymer of a monomer including acrylic acid and/or its salt; with the water-absorbing agent being characterized in that the particulate water-absorbing agent has: a mass-average particle diameter (D50) in the range of 234 to 394 gm, a logarithmic standard deviation (σζ) of a particle diameter distribution in the range of 0.25 to 0.45, an absorption capacity without load (CRC) of not less than 15 g/g, and a water-extractable component content of not higher than 15 mass %; and further a liquid-permeability-enhancing agent (β) content in the range of 0.01 to 5 mass parts per 100 mass parts of the water-absorbent resin particles (α).
    • 公开了吸水剂,其结合了毛细吸力和液体渗透性的两种性能。 该吸水剂是含有吸水性树脂颗粒(α)和透液性增强剂(β)的颗粒状吸水剂,其中吸水性树脂颗粒(α)是表面交联处理颗粒 的包含丙烯酸和/或其盐的单体的交联聚合物; 吸水剂的特征在于,颗粒状吸水剂的质量平均粒径(D50)在234〜394gm的范围内,粒径分布的对数标准偏差(sigmazeta)在 范围为0.25〜0.45,无负载吸收容量(CRC)为15g / g以上,水可提取成分含量为15质量%以下; 并且每100质量份吸水性树脂颗粒(α)还含有0.01至5质量份范围内的透液性增强剂(β)含量。
    • 37. 发明申请
    • Water absorbent and producing method of same
    • 吸水剂及其制备方法
    • US20070123658A1
    • 2007-05-31
    • US10572565
    • 2004-09-17
    • Kazushi ToriiHirofumi ShibataTaku IwamuraYoshio IrieYorimichi DairokuYoshiro MitsukamiSayaka Machida
    • Kazushi ToriiHirofumi ShibataTaku IwamuraYoshio IrieYorimichi DairokuYoshiro MitsukamiSayaka Machida
    • C08F120/02
    • C08J3/245A61L15/60B01J20/261B01J2220/68C08F20/06C08J2333/00
    • An object of the present invention is to provide a water absorbent having excellent gel properties and showing excellent properties when used in a water-absorbing material of a sanitary/hygienic material such as paper diaper. Moreover, another object of the present invention is to provide a water absorbent which is safe and excellent in liquid permeability, and in which an amount of liquid permeability improver for improving the liquid permeability is reduced. The water absorbent is made from a water-absorbing resin prepared by a specific polymerization method and having a high degree of cross-linking, a high liquid holding property and a high gel strength (its swelling pressure of gel layer of is 35 kdyne/cm2 or more). This water absorbent is further processed to have a particular particle size distribution (95 wt % or more of its particles are less than 850ƒÊm but not less than 106ƒÊm, and logarithmic standard deviation (ƒĐƒÄ) is in a range of 0.25 to 0.45) and then surface cross-linked. After that, a liquid permeability improver is added therein.
    • 本发明的目的是提供一种具有优异凝胶性能的吸水剂,并且当用于诸如纸尿布的卫生/卫生材料的吸水材料时显示出优异的性能。 此外,本发明的另一个目的是提供一种安全且透液性优异的吸水剂,并且其中用于提高液体渗透性的液体渗透性改进剂的量减少。 吸水剂由具有高交联度,高液体保持性和高凝胶强度(凝胶层的溶胀压力为35kDyne / cm2)的特定聚合方法制成的吸水性树脂 或者更多)。 该吸水剂被进一步处理以具有特定的粒度分布(其颗粒的95重量%以上小于850微米但不小于106微米,对数标准偏差(fDfÄ)在0.25至0.45的范围内),然后 表面交联。 之后,加入液体渗透性改进剂。