Use of alkoxylation products of epoxidized fats as antifoaming agents

US6057375A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Horst-Werner Wollenweber · Goldkronach, DE
• Klaus Hornfeck · Mettmann, DE
• Dieter Kaps · Leverkusen, DE
• Bernhard Nellessen · Kaarst, DE
• Rita Koester · Goldkronach, DE
• Wolfgang Drees · Goldkronach, DE
• Peter Daute · Beverstedt, DE

Key dates

• Filing date: Sep 2, 1997
• Grant date: May 2, 2000
• Expiry date: Sep 2, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02W30/64
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method of controlling or preventing foam in an aqueous system is provided, wherein an effective amount of an alkoxylated, epoxidized fatty compound that has been ring-opened with a nucleophile is determined and added to the system. After ring opening with the nucleophile, the epoxidized fatty compound is alkoxylated with an alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide, and butylene oxide.