Transparent coating binder containing nanoparticles having improved scratch resistance, process for their preparation and their use

摘要

Transparent paint binders containing 0.5-25 wt% (based on paint solids) primary nano-scale particles which can be incorporated as solid, produced by jet dispersion of nano-scale particles into the binder. An Independent claim is included for a process for the production of these binders in which the preparation is taken in at least one pass through at least one device comprising at least one nozzle or slot with a bore diameter or width of 0.05-1 mm and a length to diameter ratio or depth to slot-width ratio of 1-10, with a pressure difference of at least 0.5 (preferably 1) Mpa between the nozzle and its outlet.