Patent · US Active

Process for purifying wastewaters from the workup of crude aromatic nitro compounds

US8697921B2 · kind B2 · utility

1Cited by

0References

19Claims

0Family size

Assignee

BASF SE

Inventors

Petra Deckert · Bammental, DE
Leo Denissen · Brasschaat, BE
Bart Van De Voorde · Antwerpen, BE
Julia Leschinski · Mannheim, DE
Stefan Robert Deibel · Hoeilaart, BE
Matthias Fankhaenel · Ludwigshafen, DE
Samuel Neto · Brussels, BE

Key dates

Filing date	Aug 8, 2012
Grant date	Apr 15, 2014
Priority date	—
Expiry date	Aug 8, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C201/16
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention relates to a process for purifying crude aromatic nitro compounds which originate from the nitration of aromatic compounds, comprising the single or multiple performance of the following wash stage (a):

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