发明授权
US08906824B2 Water-absorbing polymer structures produced using polymer dispersions
有权
使用聚合物分散体制备的吸水聚合物结构
- 专利标题: Water-absorbing polymer structures produced using polymer dispersions
- 专利标题(中): 使用聚合物分散体制备的吸水聚合物结构
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申请号: US12516745申请日: 2007-12-18
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公开(公告)号: US08906824B2公开(公告)日: 2014-12-09
- 发明人: Frank Loeker , Heinz Bremus , Rüdiger Gerlach , Scott J. Smith
- 申请人: Frank Loeker , Heinz Bremus , Rüdiger Gerlach , Scott J. Smith
- 申请人地址: DE Essen
- 专利权人: Evonik Degussa GmbH
- 当前专利权人: Evonik Degussa GmbH
- 当前专利权人地址: DE Essen
- 代理机构: Smith Moore Leatherwood LLP
- 代理商 Philip P. McCann; John P. Zimmer
- 优先权: DE102006060156 20061218
- 国际申请: PCT/EP2007/011093 WO 20071218
- 国际公布: WO2008/074456 WO 20080626
- 主分类号: B01J20/26
- IPC分类号: B01J20/26 ; C08F2/10 ; A61L15/60 ; C08F220/06 ; C08J3/24 ; C08L31/04 ; C08L33/02 ; C08L33/08 ; C08L35/06 ; C08F222/10
摘要:
The present invention relates to a process for the production of water-absorbing polymer structures, comprising the process steps of providing of an aqueous monomer solution comprising a polymerizable, monoethylenically unsaturated monomer (α1) carrying acid groups or a salt thereof; free-radical polymerization of the aqueous monomer solution to give a polymer gel, drying of the optionally comminuted polymer gel to give water-absorbing polymer structures, and surface post-crosslinking of the optionally ground and sieved water-absorbing polymer structures, wherein a thermoplastic polymer is added to the aqueous monomer solution before process step ii) or during process step ii), preferably before process step ii), or II) the polymer gel after process step ii) and before process step iv) or during process step iv), preferably before process step iv), or III) the water-absorbing polymer structure after process step iv).