Patent ID: 8784635
Filing Date: 2014-07-22
Classification: A61F,A61L,C09D,C25D

Abstract:
1. A method for grafting an organic film onto an electrically conductive or semiconductive surface by electro-reduction of a solution, comprising the following steps: a) preparing a solution containing at least one diazonium salt, glycerol, one monomer bearing at least one chain polymerizable functional group, that are precursors of said organic film, and a solvent selected from the group consisting of dimethylformamide, dimethylsulfoxide, ethyl acetate, acetonitrile, tetrahydrofuran, propylene carbonate, dichloroethane and chlorinated solvents, b) electrolyzing said solution in an electrolysis cell using the conducting or semiconducting surface to be coated as working electrode and at least one counterelectrode, so as to result, by application of at least one protocol consisting of an electrical polarization of the surface by applying a variable potential over at least a range of values which are more cathodic than the reduction or peak potential of all diazonium salts in said solution, in a grafted coating of said organic film on said surface.