| abstract |
The invention relates to coating materials comprising (A) a (meth)acrylate(co)polymer that contains hydroxyl groups (hydroxyl value: 100 to 250 mg KOH/g, acid value: 0 to 35 mg KOH/g, average value molecular weight: 1,200 to 20,000 daltons, glass transition temperature: maximum +70<O_>C), (B) a compound containing carbamate groups and hydroxyl groups (hydroxyl value: 10 to 150 mg KOH/g, carbamate equivalent weight CEW: 250 to 700 g/equivalent, equivalent ratio of hydroxyl groups to carbamate groups = 1:20 to 1:0.5), (C) an amino resin and; (D) a compound of general formula (I), in which the variable R represents an organic group and the variable X represents an imino group, an oxygen atom or a sulphur atom. According to the invention, (I) at least 10 equivalent % of the hydroxyl groups contained in (A) and/or (B) are primary hydroxyl groups and (II) the coating materials after curing have a storage modulus E' in the rubber-elastic range of at least 1.5*10<7> Pa, whereby the storage modulus E' is measured using a dynamic mechanical thermal analysis (DMTA) on homogeneous free films with a layer thickness of 40 +/- 10 mu m. The invention also relates to a method for producing said materials and to their use. |