Preparation of readily water-redispersible and water-wettable polymer powders

US6872773B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Joachim Pakusch · Ludwigshafen, DE
• Ines Pietsch · Speyer, DE
• Hans-Jurgen Denu · Friedelsheim, DE
• Heinrich Sack · Haßloch, DE
• Bernd Reck · Arnstadt, DE

Key dates

• Filing date: Apr 2, 2004
• Grant date: Mar 29, 2005
• Expiry date: Apr 2, 2024

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J3/124
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A readily water-redispersible and water-wettable polymer powder is prepared by spray-drying of an aqueous dispersion of polymer particles with admixing of a hydrophilic and of a hydrophobic antiblocking agent.