Liquid coating compositions containing little or no solvent

Claim 1

In a liquid coating composition comprising a small amount of solvent or no solvent, a binder and optionally conventional auxiliary agents, wherein the binder consists essentially of: (A) 45-10% by weight of an aminoplast, the low molecular weight precursors thereof, or mixtures thereof; and (B) 55-90% by weight of an at least difunctional polyester or a mixture of such polyesters; wherein the polyester component B has been produced by the condensation of an alcohol component I with an acid component III, wherein component I consists essentially of: I.1 0-50 molar percent of one or aliphatic polyols of 3 or 4 hydroxy groups and 3-6 carbon atoms; and I.2 100-50 molar percent of a mixture II of aliphatic and cycloaliphatic diols wherein mixture II consists essentially of: II.1 0-90 molar percent of ethylene glycol; II.2 0-90 molar percent of 1,2-propanediol; and II.3 0-40 molar percent of one or more aliphatic or cycloaliphatic diols whose hydroxy functions are separated by 2-8 carbon atoms and up to 2 carbon atoms of which can be replaced by oxygen atoms which are separated from each other and from the hydroxy groups by at least 2 carbon atoms; wherein component III consists essentially of a mixture of: III.1 67-92 molar percent of hexahydroterephthalic acid or a lower alkyl ester thereof; and III.2 8-33 molar percent of an aromatic dicarboxylic acid or a lower alkyl ester derivative thereof; wherein the polyester component B has a molecular weight of 300-1,500 and wherein the binder may be obtained by the cocondensation of aminoplast component A with polyester component B, or by the cocondensation of the starting materials used for the production of aminoplast component A with polyester component B; the improvement wherein component III.2 is terephthalic acid or a lower alkyl ester derivative thereof.