The present invention relates to a coating composition comprising (A) at least one hydroxyl-containing component which [lacuna] of (A1) from 5 to 60% by weight of at least one polyester and (A2) from 40 to 95% by weight of at least one polyacrylate resin which has been prepared at least partially in the presence of component (A1) and (B) at least one crosslinking agent, characterized in that component (A2) is obtainable from the monomer units: (a) a cycloaliphatic ester of (meth)acrylic acid, (b) a hydroxyl-containing alkyl ester of (meth)acrylic acid, (c) a monomer which is different from (a) and (b) and has at least two polymerizable, olefinically unsaturated double bonds, (d) optionally a further hydroxyl-containing, ethylenically unsaturated monomer which is different from (a), (b) and (c), (e) an aliphatic ester of (meth)acrylic acid which is different from (a), (b), (c) and (d), (f) a vinyl-aromatic hydrocarbon which is different from (a), (b), (c), (d) and (e), and (g) a further ethylenically unsaturated monomer which is different from (a), (b), (c), (d), (e) and (f).
The present invention relates to partially branched polymers having a number-average molecular weight M.sub.n in the range from 500 to 20 000 daltons and synthesized from ethylenically unsaturated monomers including: i) from 80 to 99.9% by weight of monoethylenically unsaturated monomers A, and ii) from 0.1 to 20% by weight of monomers B containing at least two nonconjugated ethylenically unsaturated double bonds, the weight fraction of the monomers A and B being based on the total amount of the ethylenically unsaturated monomers that constitute the polymer.
