发明名称 |
Dewatering and purification of crude pyrrolidine |
摘要 |
In a process for purifying crude pyrrolidine to give a pyrrolidine composition comprising more than 99% (m/m) of pyrrolidine and less than 0.3% (m/m) of water, crude pyrrolidine comprising from 40 to 98% (m/m) of pyrrolidine and having a water content of more than 2% (m/m) is subjected to continuous distillation at a pressure at the top of less than 950 hPa in a column having a stripping section and a rectifying section.
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申请公布号 |
US6353118(B1) |
申请公布日期 |
2002.03.05 |
申请号 |
US20000716835 |
申请日期 |
2000.11.20 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
SIMON JOACHIM;WAHL PETER;SCHMIDT WILLI |
分类号 |
C07D295/02;C07D295/023;(IPC1-7):C07O295/023 |
主分类号 |
C07D295/02 |
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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