Abstract: The present invention relates to a coating composition comprising a fluoropolymer and a dopamine derivative. Further, the present invention relates to a process for coating a substrate, comprising the steps of (a) providing a coating composition comprising a fluoropolymer, a dopamine derivative and a solvent; (b) locating the coating composition on a substrate; (c) heating the coated substrate to remove the solvent; and (d) optionally pressing the heated coated substrate against another material surface to bond these to each other. The present coating composition allows the bonding of fluoropolymers through a process that eliminates the need for mechanical keying and hazardous or costly etching processes.