Coating medium, a method of producing multi-layer coatings and the use of the coating medium

摘要

This invention relates to coating media based on one or more styrene- free, unsaturated polyester resins, which containP PA) one or more unsaturated polyesters obtainable by the reaction ofP Pa) 0.5 to 1.0 mole of at least one alpha,beta- ethylenically unsaturated dicarboxylic acid or the anhydride thereof, PP b) 0 to 0.5 mole of at least one aromatic, aliphatic and/or cycloaliphatic saturated dicarboxylic acid or the anhydride thereof, PPc) 0.4 to 0.8 mole of at least one aliphatic saturated dihydric alcohol,PPd) 0.5 to 1.2 mole of at least one hydroxy-functional allyl ether,PPB) one or more polyglycol diacrylates of general formula ##STR1## where n=2-5 and m=2-5, particularly dipropylene glycol diacrylate, C) one or more initiators, andPPoptionally one or more organic solvents, one or more pigments and/or extenders, as well as accelerators, catalysts and/or customary lacquer additives.