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1. 发明授权

US06245907B1 Process for producing a high purity caprolactam 有权
标题翻译：生产高纯度己内酰胺的方法
公开(公告)号：US06245907B1
公开(公告)日：2001-06-12
申请号：US09205900
申请日：1998-12-04
申请人： Myung Suk Suh , Seung Eon Park , Chang Hwang Lee , Myeong Hong Lee , Si Geun Lee , Jung Ho Kim
发明人： Myung Suk Suh , Seung Eon Park , Chang Hwang Lee , Myeong Hong Lee , Si Geun Lee , Jung Ho Kim
IPC分类号： C07D20104
CPC分类号： C07D201/04 , C07D223/10
摘要： Disclosed is a process for producing a high purity caprolactam which comprises converting cyclohexene obtained by the partial hydrogenation of benzene into cyclohexanol through hydration, converting the cyclohexanol into cyclohexanone through dehydrogenation, converting the cyclohexanone into cyclohexanone oxime through oximation and converting the cyclohexanone oxime into caprolactam through the Beckman rearrangement, characterized by comprising isolating and purifying the methylcyclopentanol from the cyclohexanol prior to use of such cyclohexanol in dehydrogenation and feeding the isolated methylcyclopentanol directly to oximation in order that the methylcyclopentanol is not fed to dehydrogenation. The process of the invention advantageously provides an economic method for producing a caprolactam with greater purity.
摘要翻译：公开了一种生产高纯度己内酰胺的方法，其包括将通过水合将苯部分氢化得到的环己烯转化为环己醇，通过脱氢将环己醇转化为环己酮，通过肟化将环己酮转化为环己酮肟，并将环己酮肟转化为己内酰胺，贝克曼重排，其特征在于包括在脱氢中使用这种环己醇之前从环己醇中分离和纯化甲基环戊醇，并将分离的甲基环戊醇直接进料到肟化中，以使甲基环戊醇不进行脱氢。本发明的方法有利地提供了一种制备更高纯度的己内酰胺的经济方法。

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