Invention Grant
- Patent Title: Method for the production of N,N-dimethylacetamide (DMAC)
- Patent Title (中): 制备N，N-二甲基乙酰胺（DMAC）的方法
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Application No.: US11720770Application Date: 2005-12-03
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Publication No.: US08193390B2Publication Date: 2012-06-05
- Inventor: Horst Grafmans , Steffen Maas , Alexander Weck , Heinz Rütter , Michael Schulz , Karl-Heinz Roβ
- Applicant: Horst Grafmans , Steffen Maas , Alexander Weck , Heinz Rütter , Michael Schulz , Karl-Heinz Roβ
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Connolly Bove Lodge & Hutz LLP
- Priority: DE102004058888 20041206
- International Application: PCT/EP2005/012979 WO 20051203
- International Announcement: WO2006/061157 WO 20060615
- Main IPC: C07C231/02
- IPC: C07C231/02
Abstract:
A process for preparing N,N-dimethylacetamide (DMAC) by continuously reacting methyl acetate (MeOAc) with dimethylamine (DMA) in the presence of a basic catalyst, wherein MeOAc is used in the form of a methanolic solution and the continuous distillative workup is effected in such a way that methanol and any other low boilers are initially removed overhead in a column A and the bottom effluent of column A is fed to a column B in which DMAC is removed via a side draw a purity of ≧99.7% by weight.
Public/Granted literature
- US20100130781A1 METHOD FOR THE PRODUCTION OF N,N-DIMETHYLACETAMIDE (DMAC) Public/Granted day:2010-05-27
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