Preparation of caprolactam

Details Preparation of caprolactam Preparation of caprolactam

C - Chemistry, Metallurgy

07

D

C07D 223/10 (2006.01) C07D 201/12 (2006.01)

Patent

CA 2207315

The invention concerns the preparation of caprolactam by decomposing oligomers or polymers, which essentially contain the recurrent unit -[-N(H)-(CH2)5-C(O)- ]-, in the presence of a catalyst and at high temperature. Decomposition is carried out in the fluid phase in the presence of a heterogeneous catalyst and an organic solvent.

L'invention concerne la préparation de caprolactame par dissociation d'oligomères ou de polymères, contenant principalement l'unité récurrente -[-N(H)-(CH¿2?)¿5?-C(O)-]-, en présence d'un catalyseur, à température élevée. La dissociation s'effectue en phase liquide en présence d'un catalyseur hétérogène et d'un solvant organique.

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