发明授权
- 专利标题: Water-absorbing polymeric particles and method for the production thereof
- 专利标题(中): 吸水性聚合物颗粒及其制备方法
-
申请号: US12668183申请日: 2008-07-21
-
公开(公告)号: US08846565B2公开(公告)日: 2014-09-30
- 发明人: Ulrich Riegel , Thomas Daniel , Dieter Hermeling , Mark Elliott , Stefan Bruhns
- 申请人: Ulrich Riegel , Thomas Daniel , Dieter Hermeling , Mark Elliott , Stefan Bruhns
- 申请人地址: DE Ludwigshafen
- 专利权人: BASF SE
- 当前专利权人: BASF SE
- 当前专利权人地址: DE Ludwigshafen
- 代理机构: Marshall, Gerstein & Borun LLP
- 优先权: EP07113326 20070727
- 国际申请: PCT/EP2008/059496 WO 20080721
- 国际公布: WO2009/016055 WO 20090205
- 主分类号: B01J20/26
- IPC分类号: B01J20/26 ; B01J20/22 ; A61L15/60 ; A61L15/42 ; A61L15/58
摘要:
The present invention relates to a water absorbing material obtainable by a process comprising the steps of bringing particles of a non surface-crosslinked water-absorbing polymer in contact with a) at least one postcrosslinker, b) 10-1000 ppm, based on the non surface-crosslinked water-absorbing polymer, of at least one Nitrogen-containing water-soluble polymer of which the Nitrogen can be protonated, and c) at least one hydrophobic polymer and heat-treating the particles thus obtained at a temperature in the range from 120° C. to 300° C. and a method for the production thereof.
公开/授权文献
信息查询