Method for producing highly functional, hyper branched polyester by means of enzymatic esterification

US7317065B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Eva Wagner · Bad Dürkheim, DE
• Bernd Bruchmann · Ludwigshafen, DE
• Dietmar Haering · Edingen-Neckarhausen, DE
• Peter Keller · Bruchmühlbach-Miesau, DE
• Thomas Pouhe · Ludwigshafen, DE

Key dates

• Filing date: Apr 18, 2006
• Grant date: Jan 8, 2008
• Expiry date: Apr 18, 2026

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2848
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention provides a highly functional hyperbranched polyester which may be obtained by a process which comprises reacting a reaction solution containing solvent and reactants in the presence of an enzyme at a temperature above 60° C. and a pressure above 500 mbar.