发明名称 |
Process for the preparation of 3-(methylthio)propanal |
摘要 |
A process for the continuous preparation of 3-(methylthio)propanal. A liquid reaction medium is contacted with a gaseous acrolein feed stream in a gas/liquid contact zone. The reaction medium contains 3-(methylthio)propanal, methyl mercaptan and a catalyst for the reaction between methyl mercaptan and acrolein. The gaseous acrolein feed stream comprises acrolein vapor and non-condensable gas. Acrolein is transferred from the acrolein feed stream to the reaction medium and reacts with methyl mercaptan in that medium to produce a liquid reaction product containing 3-(methylthio)propanal. The non-condensable gas is separated from the liquid reaction product. The reaction product is divided into a product fraction and a circulating fraction, and the circulating fraction is recycled to the gas/liquid contact zone.
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申请公布号 |
US5905171(A) |
申请公布日期 |
1999.05.18 |
申请号 |
US19960667099 |
申请日期 |
1996.06.20 |
申请人 |
NOVUS INTERNATIONAL, INC. |
发明人 |
HSU, YUNG C. |
分类号 |
C07C323/50;C07C45/35;C07C45/78;C07C45/81;C07C319/18;C07C323/22;C07C323/51;(IPC1-7):C07C319/00 |
主分类号 |
C07C323/50 |
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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