Process for the production of polyphenylene oxides

US4537948A · kind A · utility

Assignee

• Chemische Werke Huels Aktiengesellschaft · US

Inventors

• Martin Bartmann · Recklinghausen, DE
• Hanns-Jorg Bax · Marl, DE
• Klaus Burzin · Marl, DE
• Wilfried Ribbing · Dorsten, DE

Key dates

• Filing date: Feb 23, 1984
• Grant date: Aug 27, 1985
• Expiry date: Feb 23, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G65/44
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for the production of polyphenylene oxides by the oxidative coupling of a diorthosubstituted phenol of the formula: ##STR1## wherein R and R' are an n-alkyl radical with 1 to about 6 carbon atoms or a phenyl radical in the presence of an oxidizing gas and an activated copper(II)-amine catalyst made of copper(II) salts, secondary aliphatic or cyclic amines having about 4 to 10 carbon atoms, and hydrobromides of the same or different secondary aliphatic or cyclic amines having about 4 to 10 carbon atoms, in a solvent mixture of a C.sub.6 -C.sub.8 aromatic hydrocarbon and a C.sub.1 -C.sub.4 aliphatic alcohol.