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    • 2. 发明授权
    • Method for production of shaped hydrogel of absorbent resin
    • 吸水树脂成型水凝胶的生产方法
    • US06241928B1
    • 2001-06-05
    • US09300196
    • 1999-04-27
    • Takumi HatsudaKatsuhiro KajikawaHideyuki TaharaKoji MiyakeAkito YanoTakanori Murakami
    • Takumi HatsudaKatsuhiro KajikawaHideyuki TaharaKoji MiyakeAkito YanoTakanori Murakami
    • B29D701
    • B01J13/0052B01J19/1887B01J19/22B01J20/26B01J20/30B29C39/14B29C41/28B29K2995/0092
    • A method for the continuous production of a shaped hydrogel of absorbent resin is disclosed. This invention accomplishes the continuous production by continuously supplying in the form of a layer a monomer mixture capable of forming an absorbent resin by polymerization and polymerizing the layer of the monomer mixture. This method is characterized by retaining the rate of change of the thickness in the direction of width of the layer of hydrogel of absorbent resin at the time of formation of gel at a level of not more than 20%. The method is advantageously carried out by the use of an apparatus for the production of a shaped hydrogel of absorbent resin which comprises a movable endless revolving support belt, a monomer mixture supplying device, and a device for discharging the shaped hydrogel of absorbent resin, the apparatus preferably being provided near each of the opposite lateral parts of the movable endless revolving support belt with a lateral weir adapted to move in concert with the belt or being provided near each of the opposite lateral parts of the movable endless revolving support belt with a lateral weir fixed in such a manner as to contact the belt in a sliding state. The method of this invention permits production of a shaped hydrogel of absorbent resin intended to afford an absorbent resin which exhibits high absorption capacity, little water-soluble content and little residual monomer only in small amounts, and enjoys a high productivity rate.
    • 公开了连续生产吸水树脂成型水凝胶的方法。 本发明通过使单体混合物的层聚合和聚合,连续地以层的形式连续供给能够形成吸收性树脂的单体混合物。 该方法的特征在于,在凝胶形成时,将吸湿树脂的水凝胶层的宽度方向的厚度变化率保持在20%以下。 该方法有利地通过使用用于生产吸收性树脂的成形水凝胶的装置进行,该设备包括可移动的环形旋转支撑带,单体混合物供应装置和用于排出吸收性树脂的成形水凝胶的装置, 设备优选地设置在可移动环形旋转支撑带的每个相对的侧部附近,具有适于与带一致移动的侧向堰或者设置在可移动环形旋转支撑带的每个相对的侧部附近, 堰以这样的方式固定,以便在滑动状态下接触皮带。 本发明的方法允许生产吸水树脂的成型水凝胶,以提供吸收性能高的吸水树脂,少量的水溶性成分和少量残留的单体,并且生产率高。