NOVELTY - Process (p1) of converting a fluoropolymer having cyano-functionalized perfluoroether-pendate groups into a perfluoroalkyl-crosslinked fluoropolymer having perfluoroether-pendate groups comprises: forming a reaction mixture by combining chlorine monofluoride with a first cyano-functionalized polymer and a second cyano-functionalized polymer at room temperature to 100 degrees C; and heating the reaction mixture to 250-300 degrees C, where the first and second cyano-functionalized polymers can be the same or different.    USE - The process is useful for: converting a fluoropolymer having cyano-functionalized perfluoroether-pendate groups into a perfluoroalkyl-crosslinked fluoropolymer having perfluoroether-pendate groups (claimed); and producing an imageable article which is useful in imaged polymeric articles including photolithography and photovoltaics.    ADVANTAGE - The process: utilizes the first cyano-functionalized polymer and the second cyano-functionalized polymer where each have no crystalline melting point above 180 degrees C that is associated with a latent heat of melting greater than 1 J/g (claimed); is a direct crosslinking process; and enhances the thermal and chemical stability in the thus formed crosslinked polymer.    DETAILED DESCRIPTION - Process (p1) of converting a fluoropolymer having cyano-functionalized perfluoroether-pendate groups into a perfluoroalkyl-crosslinked fluoropolymer having perfluoroether-pendate groups comprises: forming a reaction mixture by combining chlorine monofluoride with a first cyano-functionalized polymer and a second cyano-functionalized polymer at room temperature to 100 degrees C, where each of the cyano-functionalized polymer comprises a backbone chain, each of the backbone chain comprises fluoroalkylene repeat units optionally substituted by ether oxygen which are present at a molar concentration of 0.5-50 mole% and of formula (I); and heating the reaction mixture to 250-300 degrees C, where the first and second cyano-functionalized polymers can be the same or different.    x = 0-3, preferably 1;    y = 0-6, preferably 1;    z = 0-3, preferably 1;    R1a = (CF2)aCFR2a;    a = 0-6, preferably 1;    R2a = F or 1-6C perfluoroalkyl optionally substituted by ether oxygen, preferably CF3; and    R3a = F or 1-6C perfluoroalkyl optionally substituted by ether oxygen, preferably F.    Provided that y and z cannot both be zero, and no repeat unit polymer in the backbone chain of the cyano-functionalized has more than two vinyl hydrogens attached to it. An INDEPENDENT CLAIM is also included for a process (p2) of converting a fluoropolymer having cyano-functionalized perfluoroether-pendate groups into a perfluoroalkyl-crosslinked fluoropolymer having perfluoroether-pendate groups comprising: forming a reaction mixture by adding chlorine monofluoride to an evacuated vessel containing a cyano-functionalized polymer comprising a backbone chain that comprises repeat units of tetrafluoroethylene and perfluoromethylvinyl ether which are present at a molar concentration of 0.5-5 mole% and 3-(2-(2-cyano-1,1,2,2-tetrafluoroethoxy)-1,1,2,3,3,3-hexafluoropropoxy)-1,1,2-trifluoropropane-1,2-diyl, where the cyano-functionalized polymer has no crystalline melting point of above 150 degrees C that is associated with a latent heat of melting greater than 1 J/g; subjecting the reaction mixture to heating at 250-300 degrees C; removing residual chlorine monofluoride following the step of heating, followed by further heating the polymer to greater than 300-350 degrees C in an inert atmosphere.