Process for the purification of caprolactam

Details Process for the purification of caprolactam Process for the purification of caprolactam

C - Chemistry, Metallurgy

07

D

260/241.95

C07D 223/10 (2006.01) C07D 201/16 (2006.01)

Patent

CA 1038384

PROCESS FOR THE PURIFICATION OF LACTAMS Abstract of the Disclosure Object of the invention is a process for the purification of .epsilon.-caprolactam prepared either by Beckmann rearrangement or by rearrangement of cyclohexanoxime in the gaseous phase or by depolymerisation of polyamide waste comprising treating the solid, finely-divided crude lactam with an organic solvent for a period of up to 60 hours at a tem- perature from 0 to 50°C. According to the purification process many impurities could be removed without a sub- stantial decrease in the yield of the purified caprolactam.

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