| http://www.w3.org/ns/prov#value | - A process for producing a perfluoro unsaturated nitrile compound represented by the following general formula: CF2 ═CFO(CF2)n OCF(CF3)CN where n is an integer of 2, 3, 4 or 5, which process comprises subjecting a halogenated perfluoro saturated carboxylic acid amide compound represented by the following general formula: CF2 XCFXO(CF2)n OCF(CF3)CONH2 where X is a chlorine atom or a bromine at
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