Daniel Fricker,Hans-Peter Kohler,Harald Plöchinger,Herbert Alfons Gartner,Jörg Harren,Marc Hager
申请号：
BRPI0920652
公开号：
BRPI0920652A2
申请日:
2009.10.01
申请国别(地区):
BR
年份:
2018
代理人:
摘要：
The present invention relates to a process for the production of a superabsorbent polymer comprising: (a) preparing an aqueous mixture of monomers selected to provide after polymerization a superabsorbent polymer, (b) feeding said monomer mixture to a reactor, (c) subjecting the aqueous monomer mixture in the reactor to free-radical polymerization to obtain a superabsorbent polymer gel, and (d) removing the superabsorbent polymer gel from the reactor, (e) drying the superabsorbent polymer gel removed from the reactor, whereby at least one off-gas stream removed from any stage of the process is subjected to scrubbing with an basic aqueous solution prior to venting to obtain an aqueous scrubber solution that is at least partially recycled to any step (a) to (e) of the process.
