Patent ID: 8747954

Claim:
Process for the preparation of an organic film on a portion of the surface of a solid support made of (co)polymer, comprising the successive steps of: i) subjecting said surface portion to an oxidizing treatment, wherein said oxidizing treatment oxidizes said surface by attaching to the surface, and/or by introducing into the surface, oxygen rich groups; ii) grafting an organic film to said surface portion by radical chemical grafting, wherein said organic film is a (co)polymer mainly resulting from one or more distinct monomer units which can be polymerized by the radical route, wherein a molecular entity resulting from an adhesion primer is bonded by a covalent bond to said surface of said solid support and by another covalent bond to said organic film wherein the adhesion primer is different from the one or more distinct monomer units, wherein said adhesion primer is a cleavable aryl salt chosen from the group consisting of aryldiazonium salts, arylammonium salts, arylphosphonium salts and arylsulfonium salts.