Coating composition comprising a polyacrylate polyol, a polyester polyol, and an isocyanate-functional crosslinker

A kit of parts for preparation of a coating composition having a non-volatile content which is higher than 50 weight-% based on the total composition, comprising

• (i) a binder component comprising a polyacrylate polyol obtained by polymerization of olefinically unsaturated monomers wherein at least 40 weight-% of the monomers comprises linear or branched alk(en)yl or alk(en)ylene groups having at least 4 carbon atoms wherein the number average molecular weight (Mn) of the polyacrylate polyol does not exceed 5,000, and the polydispersity (Mw/Mn) is below 2.8, and a polyester polyol obtained by esterification of building blocks having ester-forming functional groups wherein at least 30 weight-% of the building blocks comprises linear or branched alk(en)yl or alk(en)ylene groups with at least 4 carbon atoms per ester-forming functional group, the polyester polyol having a hydroxy value above 280 mg KOH/g and a hydroxy functionality of at least 2,
• (ii) a crosslinker component comprising an isocyanate-functional crosslinker, and
• (iii) a reducer component comprising a volatile organic diluent wherein at least 60 weight-% of the volatile organic diluent comprises alk(en)yl or alk(en)ylene groups having at least 4 carbon atoms.