Coating composition based on a hydroxyl-containing addition polymer and an amino resin crosslinking agent, agent and containing acid catalysts having hydroxy groups

摘要

The invention relates to a coating composition containing P PA) 50 to 90% by weight of one or more hydroxyl-containing addition polymers, prepared by copolymerization of ethylenically unsaturated monomers which are in part hydroxyalkyl esters of &agr;,&bgr;- ethylenically unsaturated carboxylic acids andPPB) 10 to 50% by weight of one or more amino resin crosslinking agentsP Pthe sum of the proportions by weight of A and B being 100% by weight, and suitable auxiliaries and additives, optionally pigments, optionally fillers, organic solvent and an acid catalyst.PPThe coating composition is one wherein the acid catalyst used comprises PP1) sulfo- or sulfonio[sic]-succinic esters which each contain at least one hydroxyl group and/orPP2) sulfo- or sulfonio[sic]-succinic polyesters which each contain at least one hydroxyl group.PPThe invention furthermore relates to a process for the preparation of the coating compositions according to the invention and to their use as an automobile repair finish or as a stoving paint.