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    • 5. 发明申请
    • METHOD FOR PRODUCTION OF MODIFIED WATER ABSORBENT RESIN
    • 生产改性吸水树脂的方法
    • WO2007119730A1
    • 2007-10-25
    • PCT/JP2007/057936
    • 2007-04-04
    • NIPPON SHOKUBAI CO., LTD.MITSUKAMI, YoshiroMATSUMOTO, MakotoIWAMURA, Taku
    • MITSUKAMI, YoshiroMATSUMOTO, MakotoIWAMURA, Taku
    • C08J3/24C08J3/12C08J3/28
    • C08J3/28C08J2333/08
    • This invention is to provide a method for producing a modified water absorbent resin having excellent production efficiency, and manifesting excellent absorbency against pressure, absorption speed, gel strength, a liquid permeability, and the like. This invention relates to a method for the production of a modified water absorbent resin, which comprises a) a mixing step comprising mixing a water absorbent resin, water, and a water-soluble radical polymerization initiator without addition of an ethylenically unsaturated monomer, to obtain a water absorbent resin composition, and b) an irradiating step comprising irradiating said water absorbent resin composition obtained in the mixing step with active energy rays, wherein a surface water content of said water absorbent resin in said water absorbent resin composition at least at any point of time in the irradiating step is controlled to a level of not lower than 3.0% by weight based on 100% by weight of the water absorbent resin.
    • 本发明提供一种制造生产效率优异,表现出优异的耐压吸收性,吸收速度,凝胶强度,透液性等的改性吸水性树脂的制造方法。 本发明涉及一种生产改性吸水性树脂的方法,该方法包括:a)混合步骤,包括在不加入烯属不饱和单体的情况下混合吸水树脂,水和水溶性自由基聚合引发剂,以获得 吸水性树脂组合物,以及b)照射步骤,包括用活性能量射线照射在所述混合步骤中获得的所述吸水性树脂组合物,其中所述吸水性树脂组合物中的吸水性树脂的表面含水量至少在任何点 基于100重量%的吸水性树脂,将照射步骤的时间控制在不低于3.0重量%的水平。
    • 6. 发明申请
    • AN ABSORBENT MEMBER COMPRISING A MODIFIED WATER ABSORBENT RESIN
    • 包含改性吸水树脂的吸收构件
    • WO2007120561A2
    • 2007-10-25
    • PCT/US2007/008475
    • 2007-04-04
    • THE PROCTER & GAMBLE COMPANYMATSUMOTO, MakotoMITSUKAMI, YoshiroIWAMURA, Taku
    • MATSUMOTO, MakotoMITSUKAMI, YoshiroIWAMURA, Taku
    • C08J3/28
    • C08J3/28A61L15/60C08J2300/14C08J2333/02Y10T428/31855C08L33/02
    • This invention is to provide an absorbent member and a method for making such an absorbent member. The absorbent member comprises modified water absorbent having good production efficiency, good absorbency against pressure, good absorption speed, gel strength, good liquid permeability, and the like. The modified water absorbent resin is made by a method, which comprises (i) a mixing step comprising mixing a water absorbent resin, water, and a water-soluble radical polymerization initiator without addition of an ethylenically unsaturated monomer, to obtain a water absorbent resin composition, and (ii) an irradiating step comprising irradiating said water absorbent resin composition obtained in the mixing step with active energy rays, wherein the surface water content of said water absorbent resin in said water absorbent resin composition at least at any point of time in the irradiating step (ii) is controlled to a level of not lower than 3.0% by weight based on 100% by weight of the water absorbent resin. Preferably, the amount of water mixed in said step (i) exceeds 20 parts by weight and is not more than 100 parts by weight based on 100 parts by weight of the water absorbent resin.
    • 本发明提供一种吸收体及其制造方法。 吸收体包括具有良好生产效率,对压力良好的吸收性,良好的吸收速度,凝胶强度,良好的液体渗透性等的改性吸水剂。 改性吸水性树脂通过以下方法制备:(i)混合步骤,包括混合吸水性树脂,水和水溶性自由基聚合引发剂,而不加入烯属不饱和单体,得到吸水性树脂 组合物,和(ii)照射步骤,包括用活性能量射线照射在混合步骤中获得的吸水性树脂组合物,其中吸水性树脂组合物中的吸水性树脂的表面水含量至少在任何时间点 基于100重量%的吸水性树脂,将照射步骤(ii)控制在不低于3.0重量%的水平。 优选地,基于100重量份的吸水性树脂,所述步骤(i)中混合的水的量超过20重量份且不超过100重量份。