Use of certain polyphenylene oxides for the production of aromatic block polyether-poly(ester) carbonates by the interfacial process

US4645806A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Dieter Freitag · Krefeld, DE
• Ludwig Bottenbruch · Krefeld, DE
• Klaus G. Wilms · Dormagen, DE
• Peter Tacke · Krefeld, DE

Key dates

• Filing date: Dec 9, 1985
• Grant date: Feb 24, 1987
• Expiry date: Dec 9, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G63/66
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

This invention relates to the use of polyphenylene oxides corresponding to the following general formula: ##STR1## for the production of aromatic block polyether-poly(ester) carbonates by the interfacial process and also to the block polyether-poly(ester) carbonates obtainable by the process.