Use of trialkanolamine polyethers as demulsifiers for oil-in-water emulsions

US5393463A · kind A · utility

Assignee

• BASF SE

Inventors

• Rolf Fikentscher · Ludwigshafen, DE
• Knut Oppenlaender · Ludwigshafen, DE
• Johannes P. Dix · Schifferstadt, DE
• Wilfried Sager · Mutterstadt, DE
• Hans-Henning Vogel
• Klaus Barthold · Mannheim, DE
• Guenther Elfers · Birkenau, DE

Key dates

• Filing date: Sep 29, 1993
• Grant date: Feb 28, 1995
• Expiry date: Sep 29, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L71/02
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention relates to the use of trialkanolamine polyethers obtained by condensation of one or more trialkanolamines in the presence of phosphorous acid and/or hypophosphorous acid as demulsifiers for oil-in-water emulsions.