Polyol resin composition, which is in particular capable of reacting with an isocyanate, characterized in that it comprises the following components: a) at least one polyol resin, in particular an acrylic resin, obtained by polymerization of a mixture of ethylenically unsaturated monomers comprising a1) at least one hydroxylated ethylenically unsaturated monomer, in particular an acrylic monomer or a monomer that is a precursor of a hydroxylated unit, chemically modified during said polymerization or after, and a2) at least one ethylenically unsaturated acrylic monomer of cycloaliphatic structure and said resin a) having the following characteristics: - an OH number ranging from 50 to 200, preferably from 50 to 175 mg KOH/g - an acid number < 10 and more preferentially < 5 mg KOH/g - a Tg calculated according to Fox of greater than 25°C, preferably from 30 to 90°C - an Mn ranging from 1000 to 4000, as measured by GPC b) at least one reactive diluent bearing per molecule at least two groups, preferably from 2 to 4 and more preferentially from 2 to 3 groups that are capable of reacting with an isocyanate group c) at least one urethanization reaction catalyst, optionally in the presence of a cocatalyst, in particular c) being nanoencapsulated, preferably c) being free of tin d) optionally, at least one diluent with a boiling point (b.p.) of less than 250°C, which is chosen from inert or unreactive diluents (i.e. not bearing any group that can react with an isocyanate) or from reactive monofunctional diluents bearing a group that can react with an isocyanate group, in particular said diluent d) being the residual polymerization solvent for said resin a) e) optionally, at least one additive from among: UV stabilizer, antioxidant, pot life extender, conductivity additive or corrosion inhibitor with said composition having a content of compound d) corresponding to the content of volatile organic compounds of less than 300 g/l at 450 mPa.s at 25°C. a) at least one polyol resin, in particular an acrylic resin, obtained by polymerization of a mixture of ethylenically unsaturated monomers comprising a1) at least one hydroxylated ethylenically unsaturated monomer, in particular an acrylic monomer or a monomer that is a precursor of a hydroxylated unit, chemically modified during said polymerization or after, and a2) at least one ethylenically unsaturated acrylic monomer of cycloaliphatic structure and said resin a) having the following characteristics: - an OH number ranging from 50 to 200, preferably from 50 to 175 mg KOH/g - an acid number < 10 and more preferentially < 5 mg KOH/g - a Tg calculated according to Fox of greater than 25°C, preferably from 30 to 90°C - an Mn ranging from 1000 to 4000, as measured by GPC - an OH number ranging from 50 to 200, preferably from 50 to 175 mg KOH/g - an acid number < 10 and more preferentially < 5 mg KOH/g - a Tg calculated according to Fox of greater than 25°C, preferably from 30 to 90°C - an Mn ranging from 1000 to 4000, as measured by GPC b) at least one reactive diluent bearing per molecule at least two groups, preferably from 2 to 4 and more preferentially from 2 to 3 groups that are capable of reacting with an isocyanate group c) at least one urethanization reaction catalyst, optionally in the presence of a cocatalyst, in particular c) being nanoencapsulated, preferably c) being free of tin d) optionally, at least one diluent with a boiling point (b.p.) of less than 250°C, which is chosen from inert or unreactive diluents (i.e. not bearing any group that can react with an isocyanate) or from reactive monofunctional diluents bearing a group that can react with an isocyanate group, in particular said diluent d) being the residual polymerization solvent for said resin a) e) optionally, at least one additive from among: UV stabilizer, antioxidant, pot life extender, conductivity additive or corrosion inhibitor