发明授权
- 专利标题: Process for the production of a superabsorbent polymer
- 专利标题(中): 用于生产超吸收性聚合物的方法
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申请号: US12575124申请日: 2009-10-07
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公开(公告)号: US08063121B2公开(公告)日: 2011-11-22
- 发明人: Daniel Fricker , Herbert Gartner , Marc Hager , Jörg Harren , Hans-Peter Kohler , Harald Plöchinger
- 申请人: Daniel Fricker , Herbert Gartner , Marc Hager , Jörg Harren , Hans-Peter Kohler , Harald Plöchinger
- 申请人地址: DE Krefeld
- 专利权人: Evonik Stockhausen GmbH
- 当前专利权人: Evonik Stockhausen GmbH
- 当前专利权人地址: DE Krefeld
- 代理机构: Smith Moore Leatherwood LLP
- 主分类号: C08G18/08
- IPC分类号: C08G18/08
摘要:
The present invention relates to a process for the production of a superabsorbent polymer comprising preparing an aqueous mixture of monomers selected to provide after polymerization a superabsorbent polymer; feeding said monomer mixture to a reactor; subjecting the aqueous monomer mixture in the reactor to free-radical polymerization to obtain a superabsorbent polymer gel; removing the superabsorbent polymer gel from the reactor; and drying the superabsorbent polymer gel. Where at least one off-gas stream removed from any stage of the process is subjected to scrubbing with a basic aqueous solution prior to venting to obtain an aqueous scrubber solution that is at least partially recycled to any of the above steps of the process.
公开/授权文献
- US20100105809A1 PROCESS FOR THE PRODUCTION OF A SUPERABSORBENT POLYMER 公开/授权日:2010-04-29
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