TREATMENT OF ADIPONITRILE WITH WEAK-ACID CATION EXCHANGE RESINS

摘要

ABSTRACT OF THE DISCLOSUREA process for reducing the amount of basic impurities,especially N-heterocyclic compounds, in adiponitrile is disclosed.The process comprises treating adiponitrile with a weak-acidcation exchange resin in the presence of water. The cationexchange resin is used in its hydrogen form. The process isparticularly useful in the purification of adiponitrile manu-factured from adipic acid and ammonia.