Claims
- 1. In a process for the preparation of thermoplastically workable fluoro-polyolefins and their copolymers by polymerization or copolymerization of fluorine-containing olefins in the aqueous phase in the presence of a water-soluble radical-forming catalyst and a polymerization regulator, the improvement which comprises employing as such regulator a halogenated hydrocarbon having one carbon atom and having 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.
- 2. A process according to claim 1 wherein the regulator is selected from the group consisting of CHFBr.sub.2, CF.sub.2 Br.sub.2, CHF.sub.2 Br, CBr.sub.3 F, CHFI.sub.2, CHFBrCl, CFBrCl.sub.2, and CFBr.sub.2 Cl.
- 3. A process according to claim 1 wherein said polymerization regulator is CF.sub.2 BrCl.
- 4. A process according to claim 1 wherein said polymerization regulator is dibromodifluoromethane.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2229607 |
Jun 1972 |
DT |
|
CROSS-REFERENCE TO RELATED PATENT APPLICATION
This application is a continuation-in-part of application Ser. No. 367,902, filed June 7, 1973, now U.S. Pat. No. 3,939,690, for "Process for the Preparation of Thermoplastically Workable Fluoro-Olefin Polymers."
Foreign Referenced Citations (1)
Number |
Date |
Country |
883,850 |
Dec 1961 |
UK |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
367902 |
Jun 1973 |
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