Process for the preparation of thermoplastically workable fluoro-olefin polymers
AssigneeDynamit Nobel Aktiengesellschaft
InventorsGregor Weisgerber, Werner Trautvetter
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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 1 to 3 carbon atoms and at least three halogen atoms of which at least one is a fluorine atom and at least 1 is a bromine or iodine atom.
Claims9
In a process for the preparation of thermoplastically workable fluoro-polyolefins and their copolymers by polymerization of fluorine-containing olefins in the aqueous phase in the presence of water-soluble radical-forming catalysts and a polymerization regulator, the improvement which comprises employing as such regulator a partially or completely halogenated hydrocarbon having from two to three carbon atoms and at least three halogen atoms of which at least one is fluorine and at least another is bromine or iodine said regulator being employed in an amount between 0.05 and 10% by weight.
Dependencies are inferred from the claim text.