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    • 57. 发明授权
    • Process of manufacturing precursor of an absorbing agent
    • 制造吸收剂前体的方法
    • US6054541A
    • 2000-04-25
    • US45827
    • 1998-03-23
    • Katsuyuki WadaKinya NagasunaShin-ichi FujinoYoshihiko Masuda
    • Katsuyuki WadaKinya NagasunaShin-ichi FujinoYoshihiko Masuda
    • A61F13/15A61L15/60C08F220/00C08F220/06C08F8/14
    • A61F13/53A61F13/15203A61L15/60C08F220/00C08F220/06
    • An absorbing agent has a diffusing absorbency under pressure of not less than 25 g/g when 60 minutes elapsed after absorption is started, and a water-soluble content is above 0 percent by weight and not more than 7 percent by weight. The absorbing agent is prepared by surface-crosslinking a precursor of the absorbing agent obtained by performing an aqueous solution polymerization of a hydrophilic unsaturated monomer having not less than 50 mole percent neutralized acrylic acid as a main component using a specific crosslinking agent having a main component composed of an ester compound of a specific polyhydroxy alcohol and an unsatuated carboxylic acid, and a high-boiling component having at least two alcohol structures in a molecule as a specific ratio. As a result, an absorbing agent having excellent properties such as the diffusing absorbency under pressure is high, the water soluble content is small, and the amount of wet back of the aqueous liquid after a long period of time is small, water absorbency under pressure can be stably maintained for a long period of time can be achieved.
    • 吸收剂在吸收开始60分钟后具有不低于25g / g的压力下的扩散吸收性,并且水溶性成分高于0重量%且不大于7重量%。 吸收剂是通过使用具有主成分的特定交联剂进行以不少于50摩尔%中和的丙烯酸为主成分的亲水性不饱和单体的水溶液聚合而获得的吸收剂的前体进行表面交联而制备的。 由特定的多羟基醇和不饱和羧酸的酯化合物和分子中具有至少两个醇结构的高沸点组分作为特定比例组成。 结果,具有优异性能的吸收剂如压力下的扩散吸收性高,水溶性量小,长时间后的水性液体的湿润量少,压力下的吸水性 可以长期稳定地维持可以实现。