wire with a curable coating composition and curing the coating composition to form a coating having high partial discharge resistance and good mechanical properties application_number US 91399901 A description the nanomer of component a according to the invention is composed of an element oxygen network on the surface of which the reactive functions r 1 and optionally non reactive or partially reactive functions r 2 and r 3 are bound by way of the oxygen of the network the nanomers with the described functions r 1 to r 4 are particles whose average radius is in the range from 1 nm to 300 nm preferably in a range from 2 mm to 80 nm particularly preferably in a range from 4 nm to 50 nm the nanomer according to the invention is contained in an amount from 1 wt to 60 wt preferably 5 wt to 30 wt in the coating composition the element oxygen network of the nanomer according to the invention contains the above mentioned elements which are bound by way of oxygen the network may contain one or more identical or different elements in a regular and or irregular sequence bound to the oxygen in each case the inorganic network preferably contains the elements of the series comprising titanium silicon aluminium and or zirconium for example compounds based on the.