发明授权
- 专利标题: Process for agglomeration of superabsorbent polymer fine particles
- 专利标题(中): 超吸收性聚合物细颗粒聚集的方法
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申请号: US12789644申请日: 2010-05-28
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公开(公告)号: US08367774B2公开(公告)日: 2013-02-05
- 发明人: Markus Frank
- 申请人: Markus Frank
- 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
- 代理商 Philip P. McCann
- 优先权: DE10334271 20030725
- 主分类号: C08F8/00
- IPC分类号: C08F8/00
摘要:
Among other things, a process for producing an agglomerated superabsorbent polymer particle and an agglomerated superabsorbent polymer particle are disclosed. The process comprises the steps of: (A) bringing superabsorbent polymer fine particles having at least about 40 wt. %, a particle size of less than about 150 μm into contact with a fluid comprising to more than about 10 wt. % a cross-linkable, uncrosslinked polymer based on polymerized, ethylenically unsaturated, acid group-bearing monomers or salts thereof; and (B) cross-linking the uncrosslinked polymer by heating the superabsorbent polymer fine particles and the fluid to a temperature from about 20 to about 300° C., so that the cross-linkable, uncrosslinked polymer at least partially crosslinks.
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