Trifluorochloroethylene, vinyl

The volume of commercial fluorine containing polymers is not large when compared with other polymers, such as poly(vinyl chloride). Fluoropolymers, however, are required in many important applications. The main monomers are tetrafluoroethylene, trifluorochloroethylene, vinyl fluoride, vinylidine fluoride, and hexafluoropropylene. 

The discovery of fluoropolymers by Plankett, started in 1941 with polytetraflnoroethylene (PTFE). The most important polymers of this group are the homopolymers of tetrafluoroethylene, trifluorochloroethylene, vinyl flnoride and various copolymers based on these and other monomers [11]. 

Poly(vinyl fluoride) Poly(vinyl chloride) Poly(trifluorochloroethylene) Poly(vinylidene fluoride)... 

The increased solubility of vinyl polymers in solvents at elevated temperatures enables very high solids to be obtained for application techniques like hot airless spraying or curtain coating. Figure 33 illustrates this property with a vinyl chloride-trifluorochloroethylene copolymer at 25° to 95°C. Since the solubility of the resin improves with... 

Rempp and Franta [3] described the synthesis of macromonomers either by using redox catalysis with halogenated monomers (vinyl chloride, vinyl dichloride, or even trifluorochloroethylene) or by using a radical initiation with (meth)acrylates. In the latter case, thiol compounds were used as transfer agents (Scheme 46) [251] ... 

Poly(vinyl halides) (PVC etc.) and PoIy(vinyl alcohol) (PVA).—A series of papers has appeared concerned with the photo-dehydrochlorination, discoloration, and sensitized photolysis of model compounds of PVC,819 and its copolymers.220 The photolysis of poly(vinyl bromide)221 and a trifluorochloroethylene-vinylidene fluoride copolymer228 has been described. The photo-oxidative destruction of PVA has been reported in a series of papers.223... 

PCTFE Poly(trifluorochloroethylene) VC/A Poly(vinyl chloride-co-acrylate)... 

Chlorotrifluoroethylene is a colorless gas at room temperature and pressure. It is the monomer for poly-chlorotrifluoroethylene and is also known as trifluoro-vinyl chloride and trifluorochloroethylene. Physical properties of CTFE are listed in Table 4.5. It is fairly toxic with an LC50 (rat), 4 h of4,000 ppm.[" l... 

When conducting the reaction in the presence of monomer, the formed free radicals can initiate the pol5mierization reaction. The method is used for pol5mierization of styrene, butadiene, isoprene, vinyl acetate and methyl methacrylate. Similar effects can be achieved by the use of other active radicals such as trifluoromethyl CFj, or fluorine F. These radicals are formed at the anode as a result of the electrolysis of trifluoroacetic or hydrofluoric acid. Application of these systems allows performing the free radical pol5mierization of tetrafluoroethylene and trifluorochloroethylene at the anode, at normal pressure and at a temperature below 273 K. The polymerization of these compoimds, when initiated by peroxides, takes place at high pressures and at high temperatures. The effect of temperature... 

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