Method for the purification of dimethylacetamide (DMAc)

Method for the purification of dimethylacetamide (DMAc)

Disclosed is a method for the distillative purification of aqueous raw dimethylacetamide (raw DMAc) containing DMAc as well as low-boiling and high-boiling components. According to the inventive method, the low-boiling and high-boiling components are eliminated in one column or several columns that...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: PESCHEL WERNER,RUST HARALD,KIRCHNER TANJA
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:Disclosed is a method for the distillative purification of aqueous raw dimethylacetamide (raw DMAc) containing DMAc as well as low-boiling and high-boiling components. According to the inventive method, the low-boiling and high-boiling components are eliminated in one column or several columns that are mounted in series so as to obtain pure DMAc. The disclosed method is characterized in that the pure DMAc is withdrawn from the single column or the last of several columns as a liquid side stream.