发明申请
US20100105809A1 PROCESS FOR THE PRODUCTION OF A SUPERABSORBENT POLYMER 有权
制备超吸收聚合物的方法

PROCESS FOR THE PRODUCTION OF A SUPERABSORBENT POLYMER
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.
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