Curable fluorine-containing copolymers and coatings and coating methods

A method for coating a flexible substrate by applying the curable fluorine-containing copolymer A, the curable fluorine-containing copolymer A, FC and M1) is at least one polycarboxylic anhydride and / or M2) the reaction product of at least one monofunctional isocyanate, FC is At least one fluorinated olefin having FC1) 2 to 10 carbon atoms, Wherein at least have no one nonfluorinated olefins and FC3) hydroxyl, optionally a curable fluorine-containing copolymer based on at least one non-fluorinated olefin having a carboxyl group having a carboxyl group by FC2) OH group and optionally.