Process for continuous mass polymerization of alkenyl-aromatic compounds

US4275177A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Wilfried Walkenhorst · Königstein, DE
• Richard Gauer · Hewitt, US
• Gerhard Wild · Frankfurt am Main, DE
• Walter Muller · Allendorf (Eder), DE

Key dates

• Filing date: Sep 10, 1979
• Grant date: Jun 23, 1981
• Expiry date: Sep 10, 1999

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F28D2021/0052
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Styrene-containing polymers are produced by one- or multi-stage prepolymerization and subsequent continuous, one- or multi-stage main polymerization with final working up. In the main polymerization stage(s) the mixture is subjected simultaneously to a heat exchange and a static mixing procedure.