PROCESS TO SEPARATE (PERMITTIVY)-CAPROLACTAM FROM 6-AMINOCAPROAMIDE AND 6- AMINOCAPROAMIDE OLIGOMERS

摘要

PROCESS TO SEPARATE -CAPROLACTAM FROM 6- AMINOCAPROAMIDE AND 6-AMINOCAPROAMIDE OLIGOMERS, WHEREIN ( )-CAPROLACTAM , 6-AMINOCAPROAMIDE AND 6-AMINOCAPROAMIDE OLIGOMERS ARE PRESENT IN A FIRST AQUEOUS STARTING MIXTURE, WHICH MIXTURE IS CONTACTED WITH AN ALCOHOL EXTRACTION SOLVENT, RESULTING IN A FIRST AQUEOUS RAFFINATE PHASE WHICH IS POOR IN ( )-CAPROLACTAM AND AN ALCOHOL PHASE WHICH IS IN ( ) CAPROLACTAM AND WHICH ALCOHOL PHASE CONTAINS 6-AMINOCAPROAMIDE AND/OR 6-AMINOCAPROAMIDE OLIGOMERS, WHEREIN THE LATTER ALCOHOL PHASE IS SUBSEQUENTLY CONTACTED WITH WATER (BACKWASH WATER) RESULTING IN AN ALCOHOL EXTRACT PHASE POOR IN 6--AMINOCAPROAMIDE AND/OR 6-AMINOCAPROAMIDE OLIGOMERS AND A SECOND AQUEOUS RAFFINATE PHASE RICH IN 6-AMINOCAPROAMIDE AND/OR 6-AMINOCAPROAMIDE OLIGOMERS.