Liquid coating composition containing vinyl fluoride-hexafluoropropylene resin

A liquid coating composition which is stable at room temperature in the form of a solvent solution comprising a vinyl fluoride-hexafluoropropylene copolymer having an inherent viscosity of 0.2 to 2 and composed of 5 to 50 mol% of units derived from hexafluoropropylene, 0 to 10 mol% of units derived from a vinyl ester of an aliphatic carboxylic acid having 1 to 6 carbon atoms or 0 to 1 mol% of units derived from a nonomer selected from the group consisting of unsaturated aliphatic carboxylic acids having 3 to 6 carbon atoms, lower alkyl esters of acrylic acid having an epoxy group, and lower alkyl esters of methacrylic acid having an epoxy group, and the remainder being units derived from vinyl fluoride, a solvent for said vinyl fluoride-hexafluoropropylene copolymer said solvent selected from the group consisting of (1) aliphatic ketones having not over 9 carbon atoms, (2) alkyl esters having not over 10 carbon atoms of aliphatic monocarboxylic acids and halides thereof, (3) lower alkyl esters of aliphatic dicarboxylic acids having 2 to 7 carbon atoms, (4) aliphatic monocarboxylic acids having 2 to 4 carbon atoms and anhydrides thereof, (5) cyclic esters and (6) aliphatic nitriles having 2 to 6 carbon atoms, a cross-linking agent selected from the group consisting of aliphatic polyamines, aromatic polyamines and carbamate derivatives thereof, and a cross-linking promoter selected from oxides of alkaline earth metals, the amount of said copolymer being 1 to 50% by weight as solids content, based on the weight of the composition.