Substrate including a surface coated with an epilame agent and method for coating such a substrate with epilame

A method for coating with epilame at least one part of a substrate surface, the method comprising:

• a) preparing an epilame-coating bath containing an epilame agent comprising at least one copolymer;
• b) optionally, preparing the substrate surface;
• c) monitoring the concentration of epilame agent in the epilame-coating bath by means of the tracer group;
• d) optionally readjusting the concentration of epilame agent in the epilame-coating bath;
• e) placing the substrate surface in contact with the epilame agent in the epilame-coating bath;
• and
• f) drying,
• wherein the copolymer comprises V units, N units, optionally at least one M unit and optionally at least one P unit, linked by covalent bonds by their main chains, wherein
• where R1 ,R2, R3, R4,which may be identical or different, are each selected from the group consisting of H, a C1-C10 alkyl group, and a C1-C10 alkenyl group,
• W, X, Y, Z, which may be identical or different, are spacer arms formed of a heteroatom or of a hydrocarbon chain that may contain at least one linear or branched heteroatom group comprising at least one carbon atom
• T, which may be identical or different, is a tracer group arranged to determine the concentration of copolymer in a medium
• L, which may be identical or different, is a halogenated C1-C20 carbon moiety
• A, which may be identical or different, forms an anchoring moiety for the substrate, and is chosen from the group consisting of thiols, thioethers, thioesters, sulphides, thioamides, silanols, alkoxysilanes, silane halides, hydroxyls, phosphates, protected or non-protected phosphoric acids, protected or non-protected phosphonates, amines, ammoniums, nitrogenated heterocycles, carboxylic acids, anhydrides, and catechol
• Q, which may be identical or different, is selected from the group consisting of H, CH3, and a hydrocarbon chain that may contain at least one linear or branched, saturated or unsaturated heteroatom group, comprising at least 2 carbon atoms.

A substrate comprising a surface at least one part of which is coated with an epilame agent, wherein said epilame agent comprises at least one compound in the form of a copolymer comprising V units, N units, at least one M unit and optionally at least one P unit, linked by covalent bonds by their main chains, wherein

• where R1, R2, R3, R4, which may be identical or different, are selected from the group consisting of H, a C1-C10 alkyl group, and a C1-C10 alkenyl group
• W, X, Y, Z, which may be identical or different, are spacer arms formed of a heteroatom or of a hydrocarbon chain that may contain at least one linear or branched heteroatom group comprising at least one carbon atom
• T, which may be identical or different, is a tracer group arranged to determine the concentration of epilame agent in an epilame-coating bath
• L, which may be identical or different, is a halogenated C1C20 carbon moiety
• A, which may be identical or different, forms an anchoring moiety for the substrate, and is chosen from the group consisting of thiols, thioethers, thioesters, sulphides, thioamides, silanols, alkoxysilanes, silane halides, hydroxyls, phosphates, protected or non-protected phosphoric acids, protected or non-protected phosphonates, amines, ammoniums, nitrogenated heterocycles, carboxylic acids, anhydrides, and catechol
• Q, which may be identical or different, is selected from the group consisting of H, CH3 and a hydrocarbon chain that may contain at least one linear or branched, saturated or unsaturated heteroatom group, comprising at least 2 carbon atoms,
• wherein the copolymer comprises, in molar percent, between 3% and 10% of V units, between 70% and 95% of N units, between 1% and 20% of M units, and between 0% and 20% of P units.