发明名称 |
HYDROLYTICALLY STABLE POSTCROSSLINKED SUPERABSORBENTS |
摘要 |
The present invention relates to a process for producing postcrosslinked water-absorbing polymeric formations, comprising the steps of contacting water-absorbing polymeric formations P1 obtained by polymerization of ethylenically unsaturated acid-functional monomers or salts thereof in the presence of a crosslinker with a fluid F1 comprising a postcrosslinker, - heating the water-absorbing polymeric formations in contact with the fluid F1 to a temperature in a range from 40 to 300°C to obtain postcrosslinked water- absorbing polymeric formations P2, the water-absorbing polymeric formations P1 having a thermal stability, as determined in accordance with the test method described herein, of less than 3.0%. The invention also relates to water-absorbing polymeric formations, to the water-absorbing polymeric formations obtainable by this process, to water-absorbing polymeric formations based on crosslinked carboxyl-bearing monomers, to a composite comprising water-absorbing polymeric formations and a substrate, to a process for producing a composite, to a composite obtainable by this process, to chemical products comprising water-absorbing polymeric formations or a composite, to the use of water-absorbing polymeric formations or of a composite in chemical products and also to the use of triallyl isocyanurate as an internal crosslinker in the production of water-absorbing polymeric formations based on crosslinked carboxyl-bearing monomers. |
申请公布号 |
WO2006094907(A1) |
申请公布日期 |
2006.09.14 |
申请号 |
WO2006EP60250 |
申请日期 |
2006.02.24 |
申请人 |
DEGUSSA AG;HARREN, JOERG;ISSBERNER, JOERG;WALDEN, MIRKO;TENI, RAINER;FURNO, FRANCK;WERLE, PETER;KRIMMER, HANS-PETER |
发明人 |
HARREN, JOERG;ISSBERNER, JOERG;WALDEN, MIRKO;TENI, RAINER;FURNO, FRANCK;WERLE, PETER;KRIMMER, HANS-PETER |
分类号 |
C08J3/24;A61L15/22;C08L33/02 |
主分类号 |
C08J3/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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