Process for the preparation of high molecular weight optionally branched polyarylenesulphides

US4837301A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Volker Glock · Krefeld, DE
• Wolfgang Ebert · Krefeld, DE
• Rolf-Volker Meyer · Krefeld, DE

Key dates

• Filing date: Jan 6, 1988
• Grant date: Jun 6, 1989
• Expiry date: Jan 6, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G75/14
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

This invention relates to a process for the preparation of high molecular weight, optionally branched polyarylenesulphides from alkali metal sulphides, optionally in admixture with alkali metal hydrogen sulphides and aromatic dihalogen compounds, in a polar solvent in the presence of from 0.1 to 6.0 mol-%, preferably from 0.25 to 4.0 mol-%, of an aromatic monoalkoxy or monoalkylthio compound. The polyarylenesulphides obtained have reproducibly adjustable melt viscosities and molecular weights and are distinguished by their reduced tendency to corrosion.