C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 201/08 (2006.01) C07D 201/12 (2006.01)
Patent
CA 2399220
A process for the preparation of .epsilon.-caprolactam starting from 6- aminocaproic acid, 6-aminocaproamide, 6-aminocaproic ester, 6- aminocapronitrile, oligomers or polymers of these compounds or mixtures comprising at least two of these compounds, which process is performed in the presence of N-(5-carboxypentyl)-.epsilon.-caprolactam and/or derivative thereof in an amount of less than 50 wt.% and more than 0.1 wt.% (based on the total reaction mixture).
L'invention concerne un procédé de préparation de .epsilon.-caprolactame commençant par l'acide 6-aminocaproïque, 6-aminocaproamide, l'ester 6-aminocaproïque, 6-aminocapronitrile, des oligomères ou des polymères de ces composés ou des mélanges renfermant au moins deux de ces composés. Le procédé est exécuté en mis en oeuvre en présence de N-(5-carboxypentyl)-.epsilon.-caprolactame et/ou de l'un de ses dérivés en quantités inférieures à 50 % en pds et supérieures à 0,1 % en pds (sur la base du mélange de réaction total).
Agterberg Frank Petrus Willibrord
Guit Rudolf Philippus Maria
Offermanns Matthias Robert Jozef
Dsm Ip Assets B.v.
Dsm N.v.
Fetherstonhaugh & Co.
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