Method for producing an aqueous dispersion of particles that are made up of polymers and inorganic solid matter which consists of fine particles

US6833401B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Zhijian Xue · Ludwigshafen, DE
• Harm Wiese · Heidelberg, DE

Key dates

• Filing date: Mar 29, 2002
• Grant date: Dec 21, 2004
• Expiry date: Nov 11, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F212/30
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for preparing an aqueous dispersion of particles composed of addition polymer and finely divided inorganic solid (composite particles), in which process a mixture of ethylenically unsaturated monomers is dispersely distributed in aqueous medium and is polymerized by the method of free-radical aqueous emulsion polymerization by means of at least one free-radical polymerization initiator in the presence of at least one dispersely distributed, finely divided inorganic solid and at least one dispersant.