Abstract: The present invention relates to a water-dilutable polyester comprisinga) at least 25 mol-% of cycloaliphatic structural units, preferably from 30 to 50 mol-%,b) up to 20 mol-% of aromatic structural units, preferably from 10 to 15 mol-%,c) at least 30 mol-%, preferably from 35 to 50 mol-%, of aliphatic diols having a number of carbon atoms .gtoreq.4, andd) at least 20 mol-%, preferably from 25 to 40 mol-%, of polyols containing branched aliphatic chains.

Abstract: The invention relates to a method of priming or one-coat painting of plastics using water-borne paints which comprises employing a water-borne paint which contains an at least partially protonated product of the reaction of(A) a butadiene- and acrylonitrile-based copolymer containing primary and/or secondary amino groups, or a mixture of such copolymers, and(B) an organic compound which has a number average molecular weight of from 140 to 10,000 and contains, on statistical average, at least 1.5 epoxide groups per molecule, or a mixture of such organic compounds.