发明名称 |
PROCESS FOR PRODUCING epsilon-CAPROLACTAME |
摘要 |
<p>A process for producing epsilon -caprolactam, characterized by subjecting cyclohexanone oxime to the vapor-phase Beckmann rearrangement reaction in the presence of an alcohol using a solid catalyst and treating the resultant reaction product containing a 1-aza-2-alkoxy-1-cycloheptene with water to remove the 1-aza-2-alkoxy-1-cycloheptene from the reaction product. The thus-obtained epsilon -caprolactam has a 1-aza-2-alkoxy-1-cycloheptene content of generally 100 ppm or lower, desirably 25 ppm or lower, preferably 10 ppm or lower. It hence has a low basicity with respect to free bases and is of desirable quality.</p> |
申请公布号 |
EP1076054(A1) |
申请公布日期 |
2001.02.14 |
申请号 |
EP19990917076 |
申请日期 |
1999.04.21 |
申请人 |
SUMITOMO CHEMICAL COMPANY, LIMITED |
发明人 |
FUKAO, MASAMI;TAKAMINE, KAN;NAKAMURA, TOMOKAZU |
分类号 |
C07D201/04;(IPC1-7):C07D201/16 |
主分类号 |
C07D201/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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