公开(公告)号：US5574121A

公开(公告)日：1996-11-12

申请号：US262065

申请日：1994-06-17

申请人： Yoshio Irie ,  Nobuyuki Harada ,  Kinya Nagasuna ,  Kohichi Hirota ,  Yoshihiko Masuda ,  Hideaki Nagano ,  Hideyuki Kubo

发明人： Yoshio Irie ,  Nobuyuki Harada ,  Kinya Nagasuna ,  Kohichi Hirota ,  Yoshihiko Masuda ,  Hideaki Nagano ,  Hideyuki Kubo

IPC分类号： A61L15/24 ,  C08F220/04 ,  C08F236/22

CPC分类号： C08F220/04 ,  A61L15/24 ,  Y10S526/93

摘要： A process for preparing an absorbent resin includes the steps of: preparing a first crosslinking agent (A) including at least two polymerizable unsaturated bonds; preparing a second crosslinking agent (B) including at least two polymerizable unsaturated bonds and hydroxyl groups; preparing a crosslinking agent including (A) and (B) with a ratio of (A) to (B) ranging from 95/5 to 50/50; and polymerizing a hydrophilic unsaturated monomer having at least one carboxyl group using the crosslinking agent. The crosslinking agent includes a crosslinking agent which includes a main component at least 90 percent by weight, the main component being an ester having at least two polymerizable unsaturated bonds, wherein the ester is composed of a polyhydroxy alcohol (C) having not more than six carbon atoms and at least three hydroxy groups, and an unsaturated carboxylic acid (D); and a molecular weight ratio of the main component to a standard compound (E) is in the range of from 0.7/1 to less than 1.3/1, (E) being an ester composed of (C) that composes the main component, and (D) that composes the main component, in which all the hydroxy groups in (C) are ester-linked with (D).

摘要翻译： 制备吸收性树脂的方法包括以下步骤：制备包含至少两个可聚合不饱和键的第一交联剂（A）; 制备包含至少两个可聚合不饱和键和羟基的第二交联剂（B）; 制备包含（A）和（B）的交联剂，比例为（A）至（B）为95/5至50/50; 并使用交联剂聚合具有至少一个羧基的亲水性不饱和单体。 交联剂包括交联剂，其包含至少90重量％的主要组分，主要组分是具有至少两个可聚合不饱和键的酯，其中该酯由不超过六个的多羟基醇（C）组成 碳原子和至少三个羟基，和不饱和羧酸（D）; 并且主成分与标准化合物（E）的分子量比在0.7 / 1〜小于1.3 / 1的范围内，（E）是由构成主成分的（C）构成的酯，和 （D）构成其中（C）中的所有羟基与（D）酯连接的主要组分。