发明名称 |
Process to prepare epsilon-caprolactam from 6-aminocaproic acid |
摘要 |
Process to prepare epsilon -caprolactam starting from a liquid aqueous mixture containing an alcohol and 6-aminocaproic acid by cyclization of 6-aminocaproic acid in the aqueous mixture at an elevated temperature. The alcohol is separated from the starting aqueous mixture before performing the cyclization to such extent that the concentration of alcohol in the aqueous mixture during the cyclization is less than 1 wt. %. The advantages include reduced amounts of undesirable by-product. |
申请公布号 |
AU1676097(A) |
申请公布日期 |
1997.09.10 |
申请号 |
AU19970016760 |
申请日期 |
1997.02.12 |
申请人 |
DSM N.V.;E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
RUDOLF PHILIPPUS MARIA GUIT;SAMUEL LIVINGSTON LANE;WIM BUIJS |
分类号 |
C07D201/08 |
主分类号 |
C07D201/08 |
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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