Patent ID: 8206570

Claim:
A method for forming an organic copolymer film on an electrically conductive or semi-conductive cathodic surface, said method comprising the steps (a) and (b) of: (a) performing electrolysis of an electrolytic solution containing an adhesion primer selected from halogenoalkanes and compounds of formula I R—N 2 + , A − (I) in which: A − is a monovalent anion; and R represents an aryl group; until a primer coating is formed on the cathodic surface, the electrolysis being performed at a reduction potential at least equal to the reduction potential of the adhesion primer; and (b) reacting in the presence of a free radical polymerization initiator, in which no electrolysis occurs, a solution comprising: (i) at least one protic solvent, (ii) at least one radically polymerizable monomer having a solubility in said at least one protic solvent of less than 0.1M at 25° C. and 1×10 5 Pa, and (iii) at least one surfactant, said solution being placed on the surface obtained after performing electrolysis step (a).