Patent · US Expired

Method for the purification of dimethylacetamide (DMAc)

US7547378B2 · kind B2 · utility

0Cited by

4References

18Claims

0Family size

Assignee

BASF SE

Inventors

Werner Peschel · Lohr am Main, DE
Hartmut Schoenmakers · Heidelberg, DE
Klaus Althaus · Mannheim, DE
Tanja Kirchner · Nierstein, DE
Hartmut Staatz · Heidelberg, DE

Key dates

Filing date	Apr 5, 2004
Grant date	Jun 16, 2009
Priority date	—
Expiry date	Jan 31, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S203/20
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention relates to a process for distillatively purifying crude dimethylacetamide (crude DMAc) comprising DMAc, low boilers and high boilers 5 by removing the low boilers and the high boilers to obtain pure DMAc in one of the column configurations listed hereinbelow:

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.