Superabsorbent foam, method for the production thereof, and use thereof

US7923479B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Samantha Champ · Ludwigshafen, DE
• Mariola Wanior · Niederrodenbach, DE
• Andreas Reifschneider · Mannheim, DE

Key dates

• Filing date: Aug 4, 2008
• Grant date: Apr 12, 2011
• Expiry date: Aug 4, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2300/14
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Superabsorbent foam comprising superabsorbent fiber and/or fruit fiber, processes for producing superabsorbent foam having improved wet strength by foaming a crosslinkable aqueous mixture comprising at least 50 mol % neutralized acid-functional monoethylenically unsaturated monomer or at least one basic polymer, crosslinker, superabsorbent synthetic fiber and/or fruit fiber and at least one surfactant and subsequently polymerizing the monomer in the foamed mixture or crosslinking the basic polymer to form a hydrogel foam and use of the thus obtainable foam in hygiene articles to absorb body fluids, in dressing material to cover wounds, as a sealing material, as a packaging material, as a soil improver, as a soil substitute, to dewater sludges, to thicken waterborne paints or coatings in the course of disposing of residual quantities thereof, to dewater water-containing oils or hydrocarbons or as a material for filters in ventilation systems.