Process for the preparation of polyarylene sulphides

US4424339A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Karsten-Josef Idel · Krefeld, DE
• Edgar Ostlinning · Goldkronach, DE
• Dieter Freitag · Krefeld, DE
• Ludwig Bottenbruch · Krefeld, DE

Key dates

• Filing date: Sep 13, 1982
• Grant date: Jan 3, 1984
• Expiry date: Sep 13, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G75/0231
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Process for preparing polyarylensulfides by reacting dihalogenobenzenes, optionally substituted with polyhalogenoaromatic compounds with 3 or 4 halogeno substituents, and alkali metal sulfide in polar solvents using alkali metal sulfites and/or alkaline earth metal sulfites as catalysts.