Method for coagulating polymer dispersions using expandable microspheres

US9624408B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Ines Pietsch · Speyer, DE
• Lars Heckhoff · Ludwigshafen am Rhein, DE
• Meik Ranft · Bensheim, DE
• Peter Schuler · Karlsruhe, DE
• Andrea KUNTZ · Heidelberg, DE

Key dates

• Filing date: Mar 12, 2014
• Grant date: Apr 18, 2017
• Expiry date: Mar 12, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09J2475/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Method for coagulating an aqueous polymer dispersion, where the aqueous polymer dispersion comprises at least one polymer in dispersion in aqueous phase, and also comprises thermally expandable, thermoplastic microspheres, the polymer dispersion is coagulated by energy input, and the coagulated composition is delivered via an outlet aperture, preferably in the form of a nozzle.