发明授权
- 专利标题： Separation of methylene chloride 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出二氯甲烷
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申请号： US675817申请日： 1991-03-27
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公开(公告)号： US5152876A公开(公告)日： 1992-10-06
- 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 ; C07C29/84
摘要：
Methylene chloride cannot be completely separated from methanol or ethanol by conventional distillation or rectification because of the mimimum boiling azeotrope. Methyelne chloride can be readily separated from methanol or ethanol by azeotropic or extractive distillation. Typical effective agents are: for methanol by azeotropic distillation, isopropanol or t-butanol; by extractive distillation, 1-nitropropane or n-butanol; for ethanol by extractive distillation, isobutanol or n-propyl acetate.
公开/授权文献
- US6080555A Synthesis of polyketides from diketides 公开/授权日：2000-06-27
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