Method of producing polyphenylene oxides using morpholinium bromide as activator

US4429106A · kind A · utility

Assignee

• Chemische Werke Huels Aktiengesellschaft · US

Inventors

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

Key dates

• Filing date: May 23, 1983
• Grant date: Jan 31, 1984
• Expiry date: May 23, 2003

Classification

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

Abstract

A high molecular-weight polyphenylene oxide is produced by the oxidative coupling of a diortho-substituted phenol in the presence of a copper amine complex and an activator of morpholinium bromide and an alkali metal hydroxide or alkaline earth hydroxide.