发明授权
US4718988A Separation of 2-butyl acetate from 2-butanol by extractive distillation
失效
通过萃取蒸馏从2-丁醇中分离乙酸2-丁酯
- 专利标题： Separation of 2-butyl acetate from 2-butanol by extractive distillation
- 专利标题（中）： 通过萃取蒸馏从2-丁醇中分离乙酸2-丁酯
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申请号： US844683申请日： 1986-03-27
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公开(公告)号： US4718988A公开(公告)日： 1988-01-12
- 发明人: Lloyd Berg , An-I Yeh
- 申请人： Lloyd Berg , An-I Yeh
- 专利权人： Lloyd Berg,Yeh An I
- 当前专利权人： Lloyd Berg,Yeh An I
- 主分类号： C07C29/84
- IPC分类号： C07C29/84 ; B01D3/40 ; C07C67/48
摘要：
2-Butyl acetate cannot be completely removed from 2-butyl acetate-2-butanol-water mixtures by distillation because of the presence of the minimum ternary azeotrope. 2-butyl acetate can be readily removed from mixtures containing it, 2-butanol and water by using extractive distillation in which the extractive distillation agent is a higher boiling oxygenated, nitrogenous and/or sulfur containing organic compound or a mixture of these. Typical examples of effective agents are N,N-dimethylacetamide; dimethylformamide and ethylene glycol; acetamide, dimethylsulfoxide and ethylene glycol.
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