Process for producing aqueous dispersions of thermoplastic polyesters

US8604101B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Liqun Ren · Mannheim, DE
• Gimmy Alex Fernandez Ramirez · Ludwigshafen, DE
• Motonori Yamamoto · Mannheim, DE
• Hermann Seyffer · Heidelberg, DE
• Gabriel Skupin · Speyer, DE

Key dates

• Filing date: Mar 24, 2011
• Grant date: Dec 10, 2013
• Expiry date: Aug 9, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2377/12
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for producing aqueous dispersions of thermoplastic polymers which have a plurality of ester groups and/or carbonate groups in the main polymer chain and which have an acid number of less than 5 mg KOH/g, in particular at most 3 mg KOH/g, and which have a zero-shear viscosity η0 (180° C.) of at least 60 Pa·s at 180° C. The invention also relates to the polymer dispersions obtainable by said process, and to the use thereof.