WATER ABSORBING AGENT, PROCESS FOR ITS PRODUCTION, AND ABSORBERS AND ABSORBENT ARTICLES MADE BY USING THE AGENT
申请人:San-Dia Polymers, Ltd.
公开号:EP1457541A1
公开(公告)日:2004-09-15
A water absorbing agent comprising a crosslinked polymer including a water-soluble vinyl monomer (a1) and/or a vinyl monomer (a2) that is formed into the water-soluble vinyl monomer (a1) by hydrolysis, and a crosslinking agent (b) as an essential constituting unit, wherein the following formulae (1) and (2) are satisfied; a process for its production, and absorbers and absorbent articles made by the water absorbing agent.(Y) ≥ -1.14 (X) + 69.5(X) = ((x1)2 + 4 × (x2)2)1/2 wherein (x1) denotes a water-retention amount (g/g) of the water absorbing agent after being soaked in a physiological saline for one hour; (x2) denotes an absorption amount (g/g) of the water absorbing agent after being soaked in a physiological saline under loading of 0.9 psi for one hour; and (Y) denotes a liquid permeation speed (ml/min) of a physiological saline after the water absorbing agent is soaked in a physiological saline under loading of 0.3 psi for one hour. The water-absorbing agent enables easy production of absorbent articles exhibiting high absorption performance in any state, and is suitable for use in disposable diapers, sanitary napkins, and other sanitary goods.
一种吸水剂,由交联聚合物组成,交联聚合物包括水溶性乙烯基单体(a1)和/或通过水解形成水溶性乙烯基单体(a1)的乙烯基单体(a2),以及作为基本构成单元的交联剂(b),其中交联剂(b)满足下式(1)和(2);一种吸水剂的生产工艺,以及由该吸水剂制成的吸水剂和吸水物品。 (Y) ≥ -1.14 (X) + 69.5(X) = ((x1)2 + 4 × (x2)2)1/2 其中,(x1) 表示吸水剂在生理盐水中浸泡一小时后的保水量(克/克);(x2) 表示吸水剂在生理盐水中以 0.吸水剂在生理盐水中浸泡一小时后的液体渗透速度(毫升/分钟)。这种吸水剂可以轻松生产出在任何状态下都具有高吸水性能的吸水物品,适用于一次性尿布、卫生巾和其他卫生用品。