Nonaqueous coating composition comprising at least one hydroxyl group-containing compound having a hydroxyl number of 100 to 400 mg KOH/g and a Tg > -35°C, measured according to the description, which is present at not less than 25 wt%, based on the binder fraction of the coating composition, at least one isocyanate group-containing compound having free or blocked isocyanate groups, component comprising at least one structural unit of the formula -NR-(X-SiR" x (OR') 3-x), and/or at least one structural unit of the formula -N(X-SiR'' x (OR') 3-x) n (X'-SiR'' y (OR') 3-y) m, where R = hydrogen, alkyl, cycloalkyl, aryl, or aralkyl, it being possible for the carbon chain to be interrupted by nonadjacent oxygen, sulfur, or NRa groups, with Ra = alkyl, cycloalkyl, aryl, or aralkyl, R' = hydrogen, alkyl, or cycloalkyl, it being possible for the carbon chain to be interrupted by nonadjacent oxygen, sulfur, or NRa groups, X, X' = linear and/or branched alkylene or cycloalkylene radical having 1 to 20 carbon atoms, R'' = alkyl, cycloalkyl, aryl, or aralkyl, it being possible for the carbon chain to be interrupted by nonadjacent oxygen, sulfur, or NRa groups, n = 0 to 2, m = 0 to 2, m + n = 2, and x, y = 0 to 2, and at least one catalyst for the crosslinking of silane groups, characterized in that additionally there is at least one alkoxysilyl-functional siloxane of the formula R 1 -SiR 2 2 -A x -B y -O-SiR 3 2 -R 4 in which A is a group -[O-SiR 5 2] - and B is a group -[O-SiR 6 R 7]-, R 2, R 3, R 5, and R 6 independently of one another are linear or branched alkyl groups having 1 to 4 carbon atoms, R 1, R 4, and R 7 independently of one another are a group -L-R 8, in which L = a linear or branched divalent alkyl group and R 8 = H or -Si (R 9) z (OR 10) 3-z with R 9, R 10 = a linear or branched alkyl group having 1-4 carbon atoms and z = 0, 1, or 2, preferably z = 0, with the proviso that at least one of the radicals R 1 or R 4 and/or at least one group B constitutes a group R 8 = -Si (R 9) z (OR 10) 3-z, x independently is an integer of 1-20, y independently is an integer of 0-10, and preferably x + y ≤ 20. at least one hydroxyl group-containing compound having a hydroxyl number of 100 to 400 mg KOH/g and a Tg > -35°C, measured according to the description, which is present at not less than 25 wt%, based on the binder fraction of the coating composition, at least one isocyanate group-containing compound having free or blocked isocyanate groups, component comprising at least one structural unit of the formula -NR-(X-SiR" x (OR') 3-x), and/or at least one structural unit of the formula -N(X-SiR'' x (OR') 3-x) n (X'-SiR'' y (OR') 3-y) m, where R = hydrogen, alkyl, cycloalkyl, aryl, or aralkyl, it being possible for the carbon chain to be interrupted by nonadjacent oxygen, sulfur, or NRa groups, with Ra = alkyl, cycloalkyl, aryl, or aralkyl, R' = hydrogen, alkyl, or cycloalkyl, it being possible for the carbon chain to be interrupted by nonadjacent oxygen, sulfur, or NRa groups, X, X' = linear and/or branched alkylene or cycloalkylene radical having 1 to 20 carbon atoms, R'' = alkyl, cycloalkyl, aryl, or aralkyl, it being possible for the carbon chain to be interrupted by nonadjacent oxygen, sulfur, or NRa groups, n = 0 to 2, m = 0 to 2, m + n = 2, and x, y = 0 to 2, and R = hydrogen, alkyl, cycloalkyl, aryl, or aralkyl, it being possible for the carbon chain to be interrupted by nonadjacent oxygen, sulfur, or NRa groups, with Ra = alkyl, cycloalkyl, aryl, or aralkyl, R' = hydrogen, alkyl, or cycloalkyl, it being possible for the carbon chain to be interrupted by nonadjacent oxygen, sulfur, or NRa groups, X, X' = linear and/or branched alkylene or cycloalkylene radical having 1 to 20 carbon atoms, R'' = alkyl, cycloalkyl, aryl, or aralkyl, it being possible for the carbon chain to be interrupted by nonadjacent oxygen, sulfur, or NRa groups, n = 0 to 2, m = 0 to 2, m + n = 2, and x, y = 0 to 2, at least one catalyst for the crosslinking of silane groups, characterized in that additionally there is at least one alkoxysilyl-functional siloxane of the formula R 1 -SiR 2 2 -A x -B y -O-SiR 3 2 -R 4 in which A is a group -[O-SiR 5 2] - and B is a group -[O-SiR 6 R 7]-, R 2, R 3, R 5, and R 6 independently of one another are linear or branched alkyl groups having 1 to 4 carbon atoms, R 1, R 4, and R 7 independently of one another are a group -L-R 8, in which L = a linear or branched divalent alkyl group and R 8 = H or -Si (R 9) z (OR 10) 3-z with R 9, R 10 = a linear or branched alkyl group having 1-4 carbon atoms and z = 0, 1, or 2, preferably z = 0, with the proviso that at least one of the radicals R 1 or R 4 and/or at least one group B constitutes a group R 8 = -Si (R 9) z (OR 10) 3-z, x independently is an integer of 1-20, y independently is an integer of 0-10, and preferably x + y ≤ 20. A is a group -[O-SiR 5 2] - and B is a group -[O-SiR 6 R 7]-, R 2, R 3, R 5, and R 6 independently of one another are linear or branched alkyl groups having 1 to 4 carbon atoms, R 1, R 4, and R 7 independently of one another are a group -L-R 8, in which L = a linear or branched divalent alkyl group and R 8 = H or -Si (R 9) z (OR 10) 3-z with R 9, R 10 = a linear or branched alkyl group having 1-4 carbon atoms and z = 0, 1, or 2, preferably z = 0, with the proviso that at least one of the radicals R 1 or R 4 and/or at least one group B constitutes a group R 8 = -Si (R 9) z (OR 10) 3-z, x independently is an integer of 1-20, y independently is an integer of 0-10, and preferably x + y ≤ 20.