发明授权
- 专利标题： Postcrosslinking of water-absorbing polymers
- 专利标题（中）： 吸水聚合物的后交联
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申请号： US13171107申请日： 2011-06-28
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公开(公告)号： US08258223B2公开(公告)日： 2012-09-04
- 发明人: Ulrich Riegel , Thomas Daniel , Matthias Weismantel , Mark Elliott , Dieter Hermeling
- 申请人： Ulrich Riegel , Thomas Daniel , Matthias Weismantel , Mark Elliott , Dieter Hermeling
- 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： DE102004009438 20040224
- 主分类号： C08J3/24
- IPC分类号： C08J3/24 ; C08F20/06 ; C08F8/42
摘要：
The invention concerns a process for producing water-absorbing polymer, which comprises a base polymer A being mixed with a first aqueous solution B of at least one surface postcrosslinker and a second aqueous solution C of at least one polyvalent cation and thermally treated, wherein said base polymer A is based on at least 50% neutralized acid-functional monomer and said solutions B and C are metered wholly or partly concurrently through separate nozzles whereby a water-absorbing polymer having a high saline flow conductivity value is obtained.
公开/授权文献
- US20110257341A1 Postcrosslinking of Water-Absorbing Polymers 公开/授权日：2011-10-20
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