Oxalkylated polyester-amines, a process for their preparation and their use

US4734523A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Manfred Hofinger · Altötting, DE
• Willibald Bose · Altötting, DE
• Martin Hille · Liederbach, DE
• Roland Bohm · Altenberge, DE
• Friedrich Staiss · Wiesbaden, DE

Key dates

• Filing date: Jul 23, 1986
• Grant date: Mar 29, 1988
• Expiry date: Jul 23, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G63/6856
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Oxalkylated polyester-amines which are prepared by esterifying, with polycondensation, an oxalkylated primary fatty amine with a diol and with a dicarboxylic acid, are described. These polyester-amines are used as demulsifiers for breaking crude oil emulsions.