发明名称 |
Postcrosslinking of water-absorbing polymers |
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.
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申请公布号 |
US2007161759(A1) |
申请公布日期 |
2007.07.12 |
申请号 |
US20050588671 |
申请日期 |
2005.02.18 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
RIEGEL ULRICH;DANIEL THOMAS;WEISMANTEL MATTHIAS;ELLIOTT MARK;HERMELING DIETER |
分类号 |
C08F8/32;C08F20/06;C08F220/06;C08J3/24 |
主分类号 |
C08F8/32 |
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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