crosslinkable compositions of polyurethanes 2 ka low VOC.

The present invention firstly relates to a composition of polyol resin comprising a specific acrylic polyol resin obtained from a monomer mixture comprising a1) at least one ethylenically unsaturated monomer or a hydroxylated monomer precursor to a hydroxylated unit and a2) at least one ethylenically unsaturated monomer cycloaliphatic, b) a diluent carrier at least two reactive groups with an isocyanate group, c) a urethanization reaction catalyst, and optionally d) at least one inert diluent or monofunctional reagent point lower boiling at 250 ° C and optionally at least one additive selected from: anti-UV, antioxidant, extender "pot life", the conductivity additive composition having a VOC content <300 g / I with a reference viscosity Application of 450 mPa.s at 25 ° C. The invention also relates to a crosslinkable composition comprising said polyurethane resin composition polyol as component A) and a polyisocyanate as component B) and its use in the crosslinkable compositions of polyurethane coatings having a VOC content <250 g / I without allocation of application performance and usage.