Abstract: A binder vehicle composition which is suitable for coating media, containing: A) 20 to 77% by weight of one or more binder vehicles based on oligomeric or polymeric polyol compounds with a hydroxyl number of 80 to 300, an acid number of 0 to 30, a number average molecular weight (Mn) of 500 to 10,000, and a glass transition temperature of −20 to +70° C.; B) 77 to 20% by weight of crosslinking agents based on aliphatic and/or cycloaliphatic polyisocyanates; C) 3 to 20% by weight of oligo- or polyesters, which contain carboxyl groups, as catalyst resins, which have an acid number of 210 to 300 mg KOH/g and a number average molecular weight (Mn) of 420 to 3000; and one or more organic solvents and/or water.

Abstract: A coating medium suitable for multilayer coatings, containing, as a binder vehicle:______________________________________ A) 10 to 90% by weight of one or more hydroxy-functional (meth)acrylic copolymers, obtained from a1) 20 to 40% by weight of hydroxyalkyl esters of (meth)acrylic acid a2) 10 to 30% by weight of non-functionalised (meth) acrylates a3) 0 to 5% by weight of unsaturated carboyxlic acids a4) 10 to 60% by weight of non-functionalised monomers a5) 0 to 15% by weight of amino-functional monomers, and a6) 0 to 5% by weight of multiply-unsaturated monomers B) 90 to 10% by weight of hydroxy-functional polyesters, C) 0 to 40% by weight of hydroxy-functional binder vehicles D) 5 to 50% by weight of blocked polyisocyanates, E) 5 to 40% by weight of components based on triazine which crosslink with the hydroxyl groups of components A), B) and C) with the formation of ether and/or ester groups, ______________________________________wherein at least 50% by weight of the (meth)acrylic copolymers, with respec