Aqueous slurries of finely divided fillers, their preparation and their use for the production of filler-containing papers

US7951265B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Anton Esser · Mannheim, DE
• Volker Braig · Weinheim, DE
• Martin Wendker · Ludwigshafen am Rhein, DE
• Rainer Blum · Ludwigshafen, DE
• Peter G. Baumann · Stuttgart, DE
• Josef Neutzner · Neustadt, DE
• Jacques Dupuis · Ludwigshafen, DE
• Hans-Joachim Haehnle · Neustadt, DE

Key dates

• Filing date: Mar 18, 2005
• Grant date: May 31, 2011
• Expiry date: Jan 4, 2027

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21H17/675
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

Aqueous slurries of finely divided fillers which are at least partly coated with polymers and which are obtainable by treating aqueous slurries of finely divided fillers with at least one water-soluble amphoteric copolymer