Abstract: The invention relates to a kit of parts for preparation of a crosslinkable coating composition comprising a) a binder module comprising a film-forming binder comprising crosslinkable functional groups A, b) a crosslinker module comprising a crosslinker comprising at least two functional groups B capable of reacting with the crosslinkable functional groups A of the binder, c) a thermal activator module comprising one or more components which exhibit an accelerating effect on the reaction between functional groups A and B of the mixture of the binder module and the crosslinker module, d) an ultraviolet activator module comprising one or more components which after irradiation with ultraviolet light exhibit a greater accelerating effect on the reaction between functional groups A and B of the mixture of the binder module and the crosslinker module than before irradiation with ultraviolet light.