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发明公开
CN102056877A 生产全氟乙烯基醚的方法 有权

生产全氟乙烯基醚的方法
摘要：
本发明涉及一种通过具有以下通式(I-A)或(I-B)的卤代氟醚(HFE)的加氢脱卤来生产全氟乙烯基醚的方法：RfO-CRf’X-CRf”Rf’”X’(I-A)其中Rf代表一个C1-C6全氟(氧基)烷基基团；Rf’、Rf”和Rf’”彼此相同或不同，独立地代表氟原子或C1-C5全氟(氧基)烷基基团；X和X’彼此相同或不同，独立地选自Cl、Br或I；其中Rf*和Rf*’彼此相同或不同，独立地代表氟原子或C1-C3全氟(氧基)烷基基团；Y1和Y2彼此相同或不同，独立地代表氟原子或C1-C3全氟烷基基团；X和X’是如以上所定义的；所述方法包括在最高340℃的温度下、在含至少一种VIII B族过渡金属的一种催化剂的存在下使所述卤代氟醚(HFE)与氢接触。
摘要（英）：

The invention pertains to 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; formula (I-B) is shown in the specification, wherein Rf* and Rf*', equal or different from each other, independently represent fluorine atoms or C1-C3 perfluoro(oxy)alkyl groups; Y1 and Y2, equal or different from each other, independently represent fluorine atoms or C1-C3 perfluoroalkyl groups; X and X' are as above defined; said process comprising contacting said halofluoroether (HFE) with hydrogen in the presence of a catalyst comprising at least one transition metal of group VIII B at a temperature of at most 340 DEG C.

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