Patent ID: 7906179

Claim:
A coating formulation (B), comprising: a) 20%-90% by weight, based on the solids fraction, of at least one hydroxyl-functional film-forming resin (L), b) 1%-90% by weight, based on the solids fraction, of at least one coating curative (H) which contains free and/or protected isocyanate groups which on thermal treatment eliminate a protective group to release an isocyanate function, c) 0.05%-40% by weight, based on the solids fraction, of particles (P) which on their surface bear isocyanate-reactive functions, with more than 50% of the reactive functions of the particles (P) possessing a greater reactivity toward isocyanates than do at least 60% of the hydroxyl groups of the film-forming resin(s) (L), and d) 0%-90% by weight, based on the overall coating formulation (B), of a solvent or a solvent mixture, wherein the particles (P) are surface-modified fumed silica particles, colloidal silica particles, or surface-modified silicone resin particles.