Production of water-absorbing polymeric particles by dropletization polymerization in the gas phase

US7727586B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Stefan Bruhns · Mannheim, DE
• Volker Frenz · Hochheim, DE
• Dennis Lösch · Altrip, DE
• Volker Seidl · Mannheim, DE
• Uwe Stueven · Bad Soden, DE
• Carolin Nadine Dücker · Ludwigshafen, DE
• Matthias Weismantel · Bad Orb, DE
• Wilfried Heide · Freinsheim, DE
• Stefan Blei · Mannheim, DE

Key dates

• Filing date: Jan 24, 2006
• Grant date: Jun 1, 2010
• Expiry date: Apr 10, 2026

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2982
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for producing water-absorbing polymeric particles by dropletization polymerization in the gas phase, which comprises drying the polymeric particles after the polymerization in a fluidized bed, the water-absorbing polymeric particles themselves, hygiene articles comprising these water-absorbing polymeric particles and also apparatus for implementing the process.