Abstract: The invention relates to a hydroxyl-functional polyester containing a perfluoropolyether block prepared by a method comprising the following steps: a) subjecting a carboxyl-terminated perfluoropolyether C to a reaction with an epoxy-functional compound D, and b) subjecting the reaction product of step a) to a reaction with a lactone E. The polyester thus prepared can be used in a coating composition, comprising further (b) an OH-functional or epoxy-functional resin, and (c) a hardener comprising groups reactive to the OH or epoxy-functional groups of resin (b).

Abstract: The invention relates to a hydroxyl-functional polyester containing a perfluoropolyether block prepared by a method comprising the following steps: a) subjecting a carboxyl-terminated perfluoropolyether C to a reaction with an epoxy-functional compound D, and b) subjecting the reaction product of step a) to a reaction with a lactone E. The polyester thus prepared can be used in a coating composition, comprising further (b) an OH-functional or epoxy-functional resin, and (c) a hardener comprising groups reactive to the OH or epoxy-functional groups of resin (b).

Abstract: Embodiments herein provide for a waterborne PVDF coating composition, the preparation method and use thereof. The coating composition includes a waterborne polyvinyl fluoride dispersion, a waterborne carboxyl acrylic resin, and a crosslinking agent. The resulting coating gives excellent film performance which is comparative to that of solvent borne PVDF formulations. Meanwhile, the coating composition requires smaller amount of crosslinking agent in the formulation, and lower heating temperature for curing process, as compared with solvent borne PVDF formulations.