Invention Grant
- Patent Title: Process for agglomeration of superabsorbent polymer fine particles
- Patent Title (中): 超吸收性聚合物细颗粒聚集的方法
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Application No.: US12789644Application Date: 2010-05-28
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Publication No.: US08367774B2Publication Date: 2013-02-05
- Inventor: Markus Frank
- Applicant: Markus Frank
- Applicant Address: DE Krefeld
- Assignee: Evonik Stockhausen GmbH
- Current Assignee: Evonik Stockhausen GmbH
- Current Assignee Address: DE Krefeld
- Agency: Smith Moore Leatherwood LLP
- Agent Philip P. McCann
- Priority: DE10334271 20030725
- Main IPC: C08F8/00
- IPC: C08F8/00

Abstract:
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.
Public/Granted literature
- US20100234531A1 PROCESS FOR AGGLOMERATION OF SUPERABSORBENT POLYMER FINE PARTICLES Public/Granted day:2010-09-16
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