Emulsion-breaking composition

US4416796A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Roland Bohm · Altenberge, DE
• Martin Hille · Liederbach, DE

Key dates

• Filing date: Dec 10, 1979
• Grant date: Nov 22, 1983
• Expiry date: Dec 10, 1999

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D17/047
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Use of surface-active neutral salts of sulfonic acids of the formula I ##STR1## wherein A stands for a saturated aliphatic hydrocarbon radical or an aliphatic hydrocarbon radical having one olefinic double bond each having 3 carbon atoms, or a mononuclear or binuclear aromatic radical, especially phenyl or naphthyl, C.sub.6 H.sub.2 or C.sub.10 H.sub.4, R.sub.1 stands for alkyl or alkenyl having from 1 to 21 carbon atoms, especially 1 to 18 carbon atoms and R.sub.2 and R.sub.3 each stand for hydrogen or alkyl having from 1 to 4 carbon atoms, and of oxethylated aliphatic amines of the formula II ##STR2## wherein R' stands for a saturated aliphatic hydrocarbon radical or an aliphatic hydrocarbon radical having one or two olefinic double bonds each radical having from 8 to 25, preferably 10 to 2, carbon atoms, z stands for 0 or 1 and m, n and x each stand for integers of from 0 to 20, the sum of m, n and X amounting to an integer of from 2 to 40, as demulsifiers for the demulsification of water-containing crude oil and oil sludge emulsions.