Method of inhibiting polymer deposition on reactor walls during free-radical polymerization

US4661569A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Willi Kleine · Burghausen, DE
• Werner Frey · Thalwil, CH
• Albrecht Daweritz · Bad Aibling, DE

Key dates

• Filing date: Feb 12, 1985
• Grant date: Apr 28, 1987
• Expiry date: Feb 12, 2005

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31529
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

In a process of polymerizing ethylenically unsaturated compounds by polymerization of ethylenically unsaturated monomers in the presence of a free radical-forming initiator system and optionally customary protective colloids and/or emulsifiers and optional known additives in a reactor whose surfaces contact the reaction components, the improvement comprising providing the reactor surfaces with a coating that at least suppresses polymer deposit formation without effecting the color and quality of the polymer.