Non-aqueous cross-linkable composition

A polyol component (A) comprising at least one polyacrylate polyol (A1) obtained from:

• 10 to 60 wt % of hydroxyalkyl (meth)acrylate monomers (a1), wherein the hydroxylated alkyl group contains from 1 to 20 carbon atoms;
• optionally from 0 to 70 wt % of linear or branched alkyl (meth)acrylate monomers (a2) wherein the alkyl group contains from 1 to 20 carbon atoms;
• 10 to 60 wt % of vinyl monomers (a3);
• 5 to 50 wt % of cycloaliphatic (meth)acrylate monomers (a4), optionally the cycloaliphatic group of the cycloaliphatic (meth)acrylate (a4) contains from 5 to 16 carbon atoms;
• and
• optionally from 0 to 5 wt % (meth)acrylic acid (a5);
• based on the sum of (a1), (a3) and (a4), and, if present, (a2) and (a5);
• the polyacrylate polyol (A1) having:
• a number averaged molecular weight Mn of between 500 and 2,000 Dalton;
• a weight averaged molecular weight Mw of between 1,000 and 2,900 Dalton;
• an acid value (AV) of lower than 10 mg KOH per gram of the polyol (A1);
• and
• a glass transition temperature Tg of lower than 50° C.,
• wherein a viscosity according to ASTM D 4287 of the polyol component (A) is less than 400 mPa·s at 100 s−1 when diluted with butyl acetate to 70% solid content of the at least one polyacrylate polyol (A1) comprised in the polyol component (A).