A two-component, solvent-based coating composition comprising: i) a base component comprising one or more polyester diols having a hydroxyl value in the range of from 150 to 500 mg KOH/g polyester diol; optionally one or more hydroxyl-functional acrylate resins having a hydroxyl value in the range of from 75 to 500 mg KOH/g resin; and one or more organosilane-modified inorganic fillers and ii) a curing component comprising one or more polyisocyanates, in such amounts that the coating composition comprises: - 5 to 50 wt% of the one or more polyester diols - 0 to 25 wt% of the one or more hydroxyl-functional acrylate resins; - 10 to 70 wt% of the one or more organosilane-modified inorganic fillers; - 5 to 40 wt% of the one or more polyisocyanates wherein the coating composition comprises one or more organic solvents in an amount in the range of from 5 to 35 wt%, and has a viscosity in the range of from 50 to 2,000 mPa.s, as measured by means of a rotary viscometer at a shear rate of 1,000 s -1, a temperature of 23 °C, 30 seconds after combining and mixing the base component and the curing component. i) a base component comprising one or more polyester diols having a hydroxyl value in the range of from 150 to 500 mg KOH/g polyester diol; optionally one or more hydroxyl-functional acrylate resins having a hydroxyl value in the range of from 75 to 500 mg KOH/g resin; and one or more organosilane-modified inorganic fillers and one or more polyester diols having a hydroxyl value in the range of from 150 to 500 mg KOH/g polyester diol; optionally one or more hydroxyl-functional acrylate resins having a hydroxyl value in the range of from 75 to 500 mg KOH/g resin; and one or more organosilane-modified inorganic fillers ii) a curing component comprising one or more polyisocyanates, in such amounts that the coating composition comprises: - 5 to 50 wt% of the one or more polyester diols - 0 to 25 wt% of the one or more hydroxyl-functional acrylate resins; - 10 to 70 wt% of the one or more organosilane-modified inorganic fillers; - 5 to 40 wt% of the one or more polyisocyanates wherein the coating composition comprises one or more organic solvents in an amount in the range of from 5 to 35 wt%, and has a viscosity in the range of from 50 to 2,000 mPa.s, as measured by means of a rotary viscometer at a shear rate of 1,000 s -1, a temperature of 23 °C, 30 seconds after combining and mixing the base component and the curing component. in such amounts that the coating composition comprises: - 5 to 50 wt% of the one or more polyester diols - 0 to 25 wt% of the one or more hydroxyl-functional acrylate resins; - 10 to 70 wt% of the one or more organosilane-modified inorganic fillers; - 5 to 40 wt% of the one or more polyisocyanates - 5 to 50 wt% of the one or more polyester diols - 0 to 25 wt% of the one or more hydroxyl-functional acrylate resins; - 10 to 70 wt% of the one or more organosilane-modified inorganic fillers; - 5 to 40 wt% of the one or more polyisocyanates wherein the coating composition comprises one or more organic solvents in an amount in the range of from 5 to 35 wt%, and has a viscosity in the range of from 50 to 2,000 mPa.s, as measured by means of a rotary viscometer at a shear rate of 1,000 s -1, a temperature of 23 °C, 30 seconds after combining and mixing the base component and the curing component.