The invention relates to
coating material compositions for, for example, metallic, mineral substrates or for substrates of wood, paper and plastics, which comprise yellowing-resistant, low-
viscosity, unsaturated, amorphous polyesters which are very largely free of
benzene and
formaldehyde, as a result of which the adhesion of these
coating material compositions is improved even under critical ambient conditions, and to a preparation process and use of said compositions. More specifically, the invention relates to
coating material compositions, substantially including 1, yellowing-resistant, low-
viscosity, unsaturated, amorphous polyesters which are very largely free of
benzene and
formaldehyde; 2, at least one other
adhesive; 3, at least one accessory ingredient and / or additive; 4, at least one colorant and / or stuffing. The yellowing-resistant, low-
viscosity, unsaturated, amorphous polyesters are composed by the following components: I. acid components, made up of A) at least one alpha, beta-unsaturated dicarboxilic acid, and B) at least one linear and / or
branch fatty group and / or alicyclic and / or aromatic
bifunctional and / or polyfunctional carboxyl acid, which is not provided with alpha, beta-unsaturated part; II.
alcohol components, made up of C) bis(
hydroxymethyl)tricyclo compounds and D) at least one
bifunctional and / or polyfunctional
alcohol, wherein, based on the polyesters, the content of
benzene is lower than 10mg / kg and the content of
formaldehyde is lower than 10mg / kg, the molecular
weight distribution polydispersity of the polyesters is 1.3-4.5, the content of tricyclodecane(mono- / di-)
aldehyde in the bis(
hydroxymethyl)tricyclo
compound C) is lower than 2 weight percent; mono(
hydroxymethyl)tricyclo [5.2.1.0<2,6>]
decane in the
compound C) is lower than 10 weight percent, and the content of
chromium,
nickel,
copper,
cadmium and plumbum in the
compound C) is lower than 2mg / kg.