Substrate comprising a surface coated with an epilamization agent and method for epilamization of such a substrate

A substrate comprising a surface, at least part of which is coated with an epilamization agent, wherein said epilamization agent comprises at least one compound in the form of a block copolymer comprising at least one block of M units linked by covalent bonds by their main chains, and at least one block of N units linked by covalent bonds by their main chains, said blocks being connected to each other by covalent bonds by their main chains in linear sequences, where:

• where R1, R2, which may be identical or different, are H, a C1-C10 alkyl group, a C1-C10 alkenyl group,
• Y, X, which may be identical or different, are spacer arms formed of a heteroatom or of a linear or branched hydrocarbon chain comprising at least one carbon atom, and that may contain at least one heteroatom,
• A, which may be identical or different, forms an anchoring moiety to the substrate, and is chosen from the group comprising thiols, thioethers, thioesters, sulphides, thioamides, silanols, alkoxysilanes, silane halides, hydroxyls, phosphates, protected or non-protected phosphonic acids, protected or non-protected phosphonates, amines, ammoniums, nitrogenated heterocycles, carboxylic acids, anhydrides, catechol,
• L, which may be identical or different, is a halogenated C1-C20 carbon moiety;
• and
• wherein the block of M units comprises at least two different A anchoring moieties.