Quaternary oxalkylated polycondensates

US4730079A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

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

Key dates

• Filing date: Jul 23, 1986
• Grant date: Mar 8, 1988
• Expiry date: Jul 23, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S516/07
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Quaternary oxalkylated polycondensates are described; these are prepared by esterifying, with polycondensation, an oxalkylated primary fatty amine with a diol and with a dicarboxylic acid, and oxalkylating the resulting reaction product in the presence of a carboxylic acid. These polycondensates are used as demulsifiers for breaking crude oil emulsion and as corrosion inhibitors in plants for the recovery and treatment of natural gas and crude oil.