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EnglishPerfluorovinylethers are useful monomers for the manufacture of various fluoropolymers, in particular thermoprocessable tetrafluoroethylene (TFE)-based plastics and fluoro elastomer. Methods for manufacturing perfluorovinylethers from halofluoroethers are known in the art. Generally known methods involve dehalogenation of suitable halofluoroether precursors in liquid phase in the presence of transition metals. The object of the present invention a process for the manufacture of a perfluorovinylether by hydrodehalogenation of a halofluoroether (HFE) having general formula (I-A) or (I-B): RfO-CRf’X-CRf’’Rf’’’X’ (I-A) wherein Rf represents a C1-C6 perfluoro(oxy)alkyl group; Rf’, Rf’’ and Rf’’’, equal or different from each other, independently represent fluorine atoms or C1-C5 perfluoro(oxy)alkyl groups; X and X', equal or different from each other, are independently chosen among Cl, Br or I;
| Titolo: | Bimetallic catalysts for the gas-phase hydrodechlorination of fluoroethers |
| Inventore/i: | ALBONETTI, STEFANIA; GREGORI, MANUEL; FORNASARI, GIUSEPPE; S. Millefanti; V. Tortelli; G. Marchionne |
| Inventore/i Unibo: | |
| Anno di deposito: | 2011 |
| Numero Brevetto: | EP11153426.9 |
| Breve descrizione (Abstract): | Perfluorovinylethers are useful monomers for the manufacture of various fluoropolymers, in particular thermoprocessable tetrafluoroethylene (TFE)-based plastics and fluoro elastomer. Methods for manufacturing perfluorovinylethers from halofluoroethers are known in the art. Generally known methods involve dehalogenation of suitable halofluoroether precursors in liquid phase in the presence of transition metals. The object of the present invention a process for the manufacture of a perfluorovinylether by hydrodehalogenation of a halofluoroether (HFE) having general formula (I-A) or (I-B): RfO-CRf’X-CRf’’Rf’’’X’ (I-A) wherein Rf represents a C1-C6 perfluoro(oxy)alkyl group; Rf’, Rf’’ and Rf’’’, equal or different from each other, independently represent fluorine atoms or C1-C5 perfluoro(oxy)alkyl groups; X and X', equal or different from each other, are independently chosen among Cl, Br or I; |
| Data prodotto definitivo in UGOV: | 12-giu-2013 |
| Appare nelle tipologie: | 6.01 Brevetto |
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