发明授权
US5196094A Separation of 1,1,1-trichloroethane from the lower alcohols by
extractive distillation
失效
通过萃取蒸馏从低级醇中分离1,1,1-三氯乙烷
- 专利标题: Separation of 1,1,1-trichloroethane from the lower alcohols by extractive distillation
- 专利标题(中): 通过萃取蒸馏从低级醇中分离1,1,1-三氯乙烷
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申请号: US789286申请日: 1991-11-08
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公开(公告)号: US5196094A公开(公告)日: 1993-03-23
- 发明人: Lloyd Berg , Zuyin Yang
- 申请人: Lloyd Berg , Zuyin Yang
- 申请人地址: MT Bozeman
- 专利权人: Berg; Lloyd
- 当前专利权人: Berg; Lloyd
- 当前专利权人地址: MT Bozeman
- 主分类号: C07C17/38
- IPC分类号: C07C17/38
摘要:
1,1,1-Trichloroethane cannot be completely separated from methanol, ethanol, n-propanol, isopropanol, 2-butanol or t-butanol by conventional distillation or rectification because of the minimum boiling azeotropes. 1,1,1-Trichloroethane can be readily separated from these alcohols by extractive distillation. A typical effective agent is dimethylsulfoxide.
公开/授权文献
- US5751662A Illuminating timepiece 公开/授权日:1998-05-12
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