C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 201/16 (2006.01) C07D 201/08 (2006.01)
Patent
CA 2324305
The invention relates to a process for the purification of crude .epsilon.- caprolactam, wherein crude .epsilon.-caprolactam prepared by cyclization of alkyl 6-aminocaproate, 6-aminocapronitrile, 6-aminocaproic acid, 6 aminocaproic amide and/or oligomers thereof, is subjected to a crystallization process.
L'invention concerne un procédé de purification de .epsilon.-caprolactame brut dans lequel on soumet à un procédé de cristallisation un .epsilon.-caprolactame brut préparé par cyclisation de 6-aminocaproate d'alkyle, 6-aminocapronitrile, un acide 6-aminocaproïque, un amide 6- aminocaproïque et/ou leurs oligomères.
Agterberg Frank Petrus Willibrord
Guit Rudolf Philippus Maria
Haasen Nicolaas Franciscus
Dsm Ip Assets B.v.
Dsm N.v.
E.i. Du Pont de Nemours And Company
Fetherstonhaugh & Co.
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