METHOD FOR ISOLATING METHYLGLYCINENITRILE-N,N-DIACETONITRILE.

摘要

A method for isolating methylglycinenitrile-N,N-diacetonitrile (MGDN) from an aqueous mixture comprising MGDN is provided The method comprises cooling the aqueous mixture in one or more steps In one of these steps the mixture is cooled at a cooling rate of at least 20K/h from a temperature above the solidification point of MGDN to a temperature below the solidification point of MGDN The method is implemented continuously.