公开(公告)号：US06372852B2

公开(公告)日：2002-04-16

申请号：US09273668

申请日：1999-03-23

申请人： Kazuhisa Hitomi ,  Yuji Yamamoto ,  Shigenori Kirimura ,  Nobuyuki Harada

发明人： Kazuhisa Hitomi ,  Yuji Yamamoto ,  Shigenori Kirimura ,  Nobuyuki Harada

IPC分类号： C08F26106

CPC分类号： C08F265/06 ,  C08F265/02

摘要： The present invention has an object to provide a process for producing a water-absorbing agent which is excellent in the absorption capacities under no load and under a load with good balance and can display excellent absorption properties even if the weight percentage of a water-absorbent resin (resin concentration) is high when the water-absorbent resin is used for materials such as sanitary materials. The above object can be achieved by adding a vinyl compound or both the vinyl compound and a polyhydric alcohol to a water-absorbent resin and heating the resultant mixture.

摘要翻译： 本发明的目的是提供一种制造吸水剂的方法，该吸水剂在无负载和负载下的吸收容量优异且平衡良好，并且即使吸水性的重量百分比也能显示出优异的吸收性 当吸水性树脂用于诸如卫生材料的材料时，树脂（树脂浓度）高。 上述目的可以通过将乙烯基化合物或乙烯基化合物和多元醇两者加入到吸水树脂中并加热所得混合物来实现。

公开(公告)号：US06410616B1

公开(公告)日：2002-06-25

申请号：US09287509

申请日：1999-04-07

申请人： Nobuyuki Harada ,  Masatoshi Nakamura ,  Shigenori Kirimura ,  Yoshifumi Adachi

发明人： Nobuyuki Harada ,  Masatoshi Nakamura ,  Shigenori Kirimura ,  Yoshifumi Adachi

IPC分类号： C08J300

CPC分类号： C08J3/12 ,  C08J3/26

摘要： The present invention provides a process in which no surfactant is used, or even if the surfactant is used the amount thereof is as small as possible, thus stably obtaining a suspension to carry out a crosslinking reaction. A production process for a crosslinked polymer particle, comprising the steps of: forming a suspension in which liquid drops of a first phase are dispersed in a second phase by stirring both phases in the presence of an inorganic particle, wherein the first phase includes a high-molecular compound and a crosslinking agent, and wherein the first phase and the second phase are insoluble in each other, and wherein the affinity of the inorganic particle for water is different from that of the high-molecular compound; and carrying out a crosslinking reaction. Furthermore, an approximately spherical crosslinked polymer particle, which is free from a surfactant.

摘要翻译： 本发明提供一种不使用表面活性剂的方法，或即使使用表面活性剂，其用量尽可能的小，从而稳定地得到悬浮液进行交联反应。 一种交联聚合物颗粒的制备方法，包括以下步骤：通过在无机颗粒的存在下搅拌两相来形成第一相的液滴在第二相中分散的悬浮液，其中第一相包括高 分子化合物和交联剂，其中第一相和第二相彼此不溶，并且其中无机颗粒对水的亲和力不同于高分子化合物的亲和力; 并进行交联反应。 而且，不含表面活性剂的近似球形的交联聚合物颗粒。