PROCESS FOR THE CONTINUOUS SEPARATION OF ISOMER MIXTURES OF THE NITRO-,CHLORO-AND NITRO-CHLORO BENZENE AND TOLUENE SERIES

摘要

1322020 Separation of isomers FARBWERKE HOECHST AG 19 Nov 1970 [21 Nov 1969] 55063/70 Heading C2C A process for the separation of an isomer mixture of the nitro-, chloro-, or nitrochlorobenzene or toluene series comprises cooling a melt of the isomer mixture to obtain a crystal mass consisting of one isomer and a substantially eutectic residual melt, separating the crystal mass from the melt by filtration and/or centrifugation, purifying the crystal mass by pressing.