aqueous coating composition, in particular to the coating of finish - foils and endless edges, as well as a method for the coating of finish - foils and endless edges

摘要

The invention relates to acid-cured aqueous coating compositions, in particular for coating finish films and continuous edges, which contain aminoplast resin and hydroxylated polyester, characterized in that the polyester is produced from: (a) 33 to 55 mol % of dicarboxylic acid constituents consisting of: (a1) 50 to 100 mol % of olefinically unsaturated aliphatic dicarboxylic acids, (a2) 0 to 50 mol % of saturated aliphatic dicarboxylic acids, (a3) 0 to 50 mol % of saturated aromatic dicarboxylic acids and (b) 67 to 45 mol % of polyol constituents consisting of (b1) 20 to 90 mol % of at least one monomeric and/or oligomeric glycol with 2 to 4 carbon atoms per glycol segment and mean molecular weights less than or equal to 200, (b2) 5 to 30 mol % of at least one polymeric glycol with 2 to 4 carbon atoms per glycol segment and a mean molecular weight between 300 and 1000 and (b3) 0 to 70 mol % of at least one polyol with 2 to 4 OH groups and 4 to 10 carbon atoms per molecule, with the exception of the glycols used as constituent (b1).