Process for the preparation of thermoplastically workable fluoro-olefin polymers

US4000356A · kind A · utility

Assignee

• Dynamit Nobel GmbH · DE

Inventors

• Gregor Weisgerber · Rübhausen, DE
• Werner Trautvetter

Key dates

• Filing date: Jun 18, 1975
• Grant date: Dec 28, 1976
• Expiry date: Jun 18, 1995

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2438/01
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

An improvement in a process for the preparation of thermoplastically workable fluoro-polyolefins and their copolymers wherein a fluorine containing olefin is polymerized or copolymerized in the aqueous phase in the presence of a water-soluble, radical-forming catalyst and a polymerization regulator, the improvement residing in employing as the polymerization regulator a halogenated hydrocarbon having from one to three carbon atoms and at least three halogen atoms of which at least one is a fluorine atom and at least one is a bromine or iodine atom.