Production of polyester carbonates

US6734278B2 · kind B2 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Silke Kratschmer · Krefeld, DE
• Wolfgang Alewelt · Krefeld, DE
• Friedrich-Karl Bruder · Krefeld, DE
• Wilfried Haese · Rheydt, DE
• Rolf Wehrmann · Krefeld, DE
• Peter Fischer
• Marco Roelofs · Krefeld, DE
• Lothar Bunzel · Kempen, DE

Key dates

• Filing date: Oct 2, 2002
• Grant date: May 11, 2004
• Expiry date: Oct 2, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G63/64
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention provides a two-stage process for the production of polyester carbonates with aliphatic dicarboxylic acids, the polyester carbonates obtained thereby, a process for the production of extrudates and molded articles from the polyester carbonates, and the extrudates and molded articles obtained thereby.