Foam control agents for the food, paint and paper industries

US5725815A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Horst-Werner Wollenweber · Goldkronach, DE
• Thomas Moeller · Goldkronach, DE
• Hans-Juergen Sladek · Krefeld, DE
• Heinz-Guenther Schulte · Zwingenberg, DE
• Wolfgang Gress · Wuppertal, DE
• Ulrich Eicken · Korschenbroich, DE
• Herbert Fischer · Goldkronach, DE
• Christian De Haut · Saint-Fargeau-Ponthierry, FR

Key dates

• Filing date: Nov 9, 1995
• Grant date: Mar 10, 1998
• Expiry date: Nov 9, 2015

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21H21/12
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The process of controlling foam in a foam-generating system by adding to the system a foam-inhibiting effective amount of a block copolymer containing alkylene oxide units obtained by reacting a homopolymer or copolymer of alkylene oxides with a diisocyanate or a dicarboxylic acid derivative containing 2 to 44 carbon atoms.