Water-absorbing composites

US9198996B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Antje Ziemer · Mannheim, DE
• Horst Kaluza · Ludwigshafen, DE
• Ernst Jürgen Bauer · Ludwigshafen, DE
• Stefan Bruhns · Mannheim, DE
• Thomas Daniel · Waldsee, DE
• John C. Schmitt · Indialantic, US
• Kerstin Meyer-Lipp · Bad Nauheim, DE
• Guenter Reinhard Schmidt · Schifferstadt, DE

Key dates

• Filing date: May 15, 2012
• Grant date: Dec 1, 2015
• Expiry date: May 15, 2032

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B32B2555/00
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

This invention relates to a process for producing water-absorbing composites comprising the steps of foaming an aqueous mixture comprising at least one monoethylenically unsaturated monomer bearing acid groups, at least one crosslinker, at least one initiator and at least one surfactant, contacting the foam obtained with at least one web of synthetic fibers and polymerizing, to the composites themselves and to their use for absorbing aqueous fluids.