Process for the alkaline saponification of crosslinked...

Details Process for the alkaline saponification of crosslinked... Process for the alkaline saponification of crosslinked...

B - Operations, Transporting

01

J

B01J 39/20 (2006.01) C08F 8/12 (2006.01)

Patent

CA 2467314

The alkaline saponification of acrylonitrile bead polymers provides weakly acidic cation exchangers with little intrinsic color and with reduced residual nitrogen content if the saponification is begun at a temperature T1 of from 70 to 120°C and, once a degree of saponification of at least 65% has been reached, is completed at a temperature T2 of from 120 to 180°C.

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