| abstract |
The invention relates to the use of a copolymer (A) in a base coat that is used to produce color and/or effect-producing base coatings and multi-layer coatings. Said copolymer (A) is obtained by radically polymerizing in an aqueous medium a) at least one olefinically unsaturated monomer and b) at least one olefinically unsaturated monomer of the general formula (I) R<1>R<2>C=CR<3>R<4> that is different from the olefinically unsaturated monomer (a), wherein the residues R<1>, R<2>, R<3> and R<4> are independently hydrogen atoms or substituted or unsubstituted alkyl, cycloalkyl, alkylcycloalkyl, cycloalkylalkyl, aryl, alkylaryl, cycloalkylaryl, arylalkyl or arylcycloalkyl groups, with the proviso that at least two of the variables R<1>, R<2>, R<3> and R<4> represent substituted or unsubstituted aryl, arylalkyl or arylcycloalkyl groups, especially substituted or unsubstituted aryl groups. |