发明名称 |
Recovery of aprotic amides |
摘要 |
The present invention relates to the recovery of three aprotic amide solvents from their water solutions by extraction with a selected class of organic solvents characterized generally by having two electron withdrawing substituents, exemplified by fluorine and chlorine, located on a carbon atom which also contains a hydrogen atom.
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申请公布号 |
US4316846(A) |
申请公布日期 |
1982.02.23 |
申请号 |
US19780908275 |
申请日期 |
1978.05.22 |
申请人 |
CUSTOM ORGANICS, INC. |
发明人 |
GAVLIN, GILBERT;CESAS, ROMAS |
分类号 |
C07C233/00;(IPC1-7):C07C103/12;C07C103/34;C07C103/36;C07D207/06 |
主分类号 |
C07C233/00 |
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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