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Flutec process

The industrial scale procedure probably most important for synthesis of per-fluorocarbon-based solvents was developed during the Manhattan Project [12] (Figure 2.2). In the so-called cobalt trifluoride process (recently commercialized by F2 Chemicals as the Flutec process) [13] the large fluorination enthalpy is harnessed by dividing the reaction into two less exothermic steps. In the first step, CoFj is oxidized with fluorine, at 350 °C, to CoFj. In the second step, the organic... [Pg.27]

Scheme 2.3 Two-step perfluorination of organic substrates by the cobalt trifluorlde (Flutec) process. The mechanism is assumed to involve single electron transfers and carbocationic Intermediates [8]. Scheme 2.3 Two-step perfluorination of organic substrates by the cobalt trifluorlde (Flutec) process. The mechanism is assumed to involve single electron transfers and carbocationic Intermediates [8].
The preparation of perfluorinated compounds is largely based on the exhaustive fluorination of the corresponding hydrocarbon species and three synthetic procedures have been widely used. Two of these processes, electrochemical fluorination [27] (ECF), successfully used for the preparation of perfluoroacids (3M), and fluorination by high valent metal fluorides [28] such as cobalt trifluoride (itself prepared from cobalt difluoride and fluorine), used for the preparation of perfluorocarbons (Flutec fluids, BNFL), have been reviewed elsewhere. The third major process for the preparation of perfluorinated compounds involves direct fluorination. [Pg.3]

Perfluorocarbon fluids, such as the Flutec range (F2 Chemicals Ltd), find many uses in the electronics industry. For instance, the complete immersion of electronic components in a bath of perfluorocarbon fluid can efficiently cool overheated circuits and, by a similar process, the airtight packaging aroimd highly valuable and sensitive equipment can be tested in complete safety for leaks. [Pg.4]




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