公开(公告)号：EP0570110A1

公开(公告)日：1993-11-18

申请号：EP93302948.0

申请日：1993-04-15

申请人： SUMITOMO CHEMICAL COMPANY, LIMITED

发明人： Higashio, Yasuhiko ,  Kajikuri, Hiroshi ,  Sugita, Keisuke ,  Doi, Hideki ,  Matsubara, Masanobu

IPC分类号： C07D201/16

CPC分类号： C07D201/16

摘要： A process for producing a high purity caprolactam is disclosed in which a crude caprolactam obtained by a catalytic rearrangement of cyclohexanone oxime is subjected

(1) to mixing, while stirring, with at least one hydrocarbon selected from the group consisting of aliphatic hydrocarbons and alicyclic hydrocarbons to form a liquid-liquid , two-layer liquid mixture, and then crystallizing caprolactam out of the liquid mixture;
(2) to mixing with both at least one hydrocarbon selected from the group consisting of aliphatic hydrocarbons and alicyclic hydrocarbons, and water to form a liquid mixture, separating the liquid mixture into a hydrocarbon layer and a water layer, and then recovering caprolactam from the water layer; or
(3) to distillation in the co-presence of at least one aliphatic saturated hydrocarbon of 10 to 18 carbon atoms.

摘要翻译： 公开了一种制备高纯度己内酰胺的方法，其中通过环己酮肟的催化重排获得的粗己内酰胺在搅拌下与至少一种选自脂族烃和脂环族烃的烃进行混合 形成液液两层液体混合物，然后从己烷溶液中混合出己内酰胺; （2）与选自脂族烃和脂环族烃的至少一种烃和水混合以形成液体混合物，将液体混合物分离成烃层和水层，然后从其中回收己内酰胺 水层; 或（3）在至少一种10至18个碳原子的脂族饱和烃的共存下进行蒸馏。