发明名称 |
Cross-linked, water-absorbing polymer and its use in the production of hygiene items |
摘要 |
The invention relates to a cross-linked, water-absorbent polymer obtainable by the polymerization of a mixture consisting of a) 60-99%-wt. unsaturated, polymerizable monomers with acid groups which are neutralized to the extent of at least 30 mol-%, b) 0-37%-wt. monomers copolymerizable with a), c) 0.1-3.0%-wt. of a cross-linking agent and d) 0-10%-wt. of a water-soluble polymer, in which polymerization is conducted with a redox catalyst system containing formamidine sulfinic acid as reducing agent. The polymer is distinguished by a retention of greater than or equal to 28 g 0.9% aqueous NaCl-solution per 1 g of polymer, an absorption of greater than or equal to 26 g 0.9% aqueous NaCl-solution per 1 g of polymer at a load of 20 g/cm2 and a residual monomer content of less than 700 ppm, and preferably less than 500 ppm. The invention also relates to the use of this polymer in the production of hygiene articles.
|
申请公布号 |
US5408019(A) |
申请公布日期 |
1995.04.18 |
申请号 |
US19940191742 |
申请日期 |
1994.02.01 |
申请人 |
CHEMISCHE FABRIK STOCKHAUSEN GMBH |
发明人 |
MERTENS, RICHARD;DAHMEN, KURT;BREHM, HELMUT |
分类号 |
A61L15/60;C08F220/04;(IPC1-7):C08F236/22;C08F236/70 |
主分类号 |
A61L15/60 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|