Aqueous suspensions of fine-particulate fillers, method for the manufacture thereof and use thereof for the manufacture of fluid-containing papers

US8449721B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Juergen Schmidt-Thuemmes · Schifferstadt, DE
• Anton Esser · Mannheim, DE
• Joerg Nieberle · Monsheim, DE

Key dates

• Filing date: Jun 30, 2009
• Grant date: May 28, 2013
• Expiry date: Jan 3, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2982
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

Aqueous slurries of finely divided fillers which are at least partly covered by anionic latices, the slurries being obtainable by treating aqueous slurries of finely divided fillers with at least one anionic latex which comprises, incorporated in the form of polymerized units, at least one monomer comprising phosphonic and/or phosphoric acid groups, preparation of the aqueous slurries and their use as an additive to the paper stock in the production of filler-containing paper, filler-containing cardboard or filler-containing board by draining the paper stock.