Process for the preparation of aromatic sulfur-containing polymers

US5688908A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Michael Haubs · Bad Kreuznach, DE
• Andreas Schleicher · Runkel, DE
• Thorsten Niklas · Marburg, DE

Key dates

• Filing date: Apr 12, 1996
• Grant date: Nov 18, 1997
• Expiry date: Apr 12, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G75/025
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

In the process for the preparation of aromatic sulfur-containing polymers, the polymer is formed from a prepolymer having halogen end groups. The process can be carried out in two stages: 1. Preparation of the prepolymer and 2. conversion of the prepolymer into the polymer. The process is particularly suitable for the preparation of polyphenylene sulfide.