申请人:SANYO CHEMICAL INDUSTRIES, LTD.
公开号:EP0839841A2
公开(公告)日:1998-05-06
An anti-bacterial water absorbing agent having excellent water absorption, anti-bacterial activity, and powder flow properties. The agent is useful in the manufacture of absorbent materials particularly for absorbing urine, blood, and body fluids and the like. The agent comprises a water absorbing resin (A) having pendant acid groups, at least on acid group being in the form of a quaternary ammonium salt having the general formula (1).
wherein -X- is an anionic pendant group covalently bonded to backbone in the water absorbing resin (A) and R1, R2, R3, and R4 are organic groups. In embodiments, at least one of the organic groups on the ammonium ion is an aliphatic alkyl group having 5 to 20 carbons. At least one of R1, R2, R3 and R4 is a C5 to C20 aliphatic alkyl group. The resin has a quaternary nitrogen atom content of about 2 x 10-4% to about 0.8% by weight.
一种具有优异吸水性、抗菌活性和粉末流动性的抗菌吸水剂。该吸水剂可用于制造吸水材料,特别是用于吸收尿液、血液和体液等。该制剂包括一种吸水性树脂(A),它具有悬垂酸基,至少有一个酸基是通式(1)的季铵盐形式。
其中 -X- 是与吸水性树脂(A)中的骨架共价键合的阴离子悬垂基团,R1、R2、R3 和 R4 是有机基团。在实施例中,铵离子上的至少一个有机基团是具有 5 至 20 个碳原子的脂肪族烷基。R1、R2、R3 和 R4 中至少有一个是 C5 至 C20 脂肪族烷基。按重量计,该树脂的季氮原子含量约为 2 x 10-4% 至约 0.8%。