| abstract |
A thermosetting coating material comprisingn (A) at least 50% by weight, based on the amount of nonvolatile substances in the coating material of (A1) from 0% to 50% by weight, based on the entirety of components (A1) and (A2), of a polymethacrylate copolymer containing more than 50% by weight, based on the entirety of comonomers in the copolymer (A1), of free-radically polymerizable, ethylenically unsaturated compounds (a1) containing at least one reactive group of the formula In n—X—SiR″ x (OR′) 3-x (I)n nand (A2) from 50% to 100% by weight, based on the entirety of components (A1) and (A2), of an adduct of polyisocyanate and alkoxysilane, (A2) containing at least one reactive group of the formula II:n n—NR—C(O)—N—(X—SiR″ x (OR′) 3-x ) n (X′—SiR″ y (OR′) 3-y ) m (II)n (B) a catalyst for the crosslinking of the —Si(OR′) 3-x units, and (C) an aprotic solvent or a mixture of aprotic solvents. |