IMPACTS OF DIBROM(R) CONCENTRATE AND 3 NEW NALED FORMULATIONS ON 3 1996 DU-PONT AUTOMOTIVE PAINT FINISHES

To investigate potential impacts on automobile finishes, droplets of 4 naled formulations were applied to 3 contemporary automotive paints a nd assessed by means of microscopic and unaided visual inspections. Th ree droplet size ranges simulated ground-and aerial-based ultra-low vo lume applications and were each generated for Dibrom(R) Concentrate, a new formulation of Dibrom Concentrate (VC-1088), and two other new na led formulations (Trumpet VC-1083 and Trumpet VC-1084). Du Pont automo tive paint finishes tested were RK7072, RK8010, and RK7120 used on For d trucks, General Motors cars, and Cadillacs, respectively. Visible sp otting was never produced by small droplets averaging (SE) a volume me dian diameter of 13.12 mu m (0.44), and quantifiable microscopic spots were detected only on the RK8010 paint finish. The latter paint finis h was the most susceptible to spotting, whereas RK7072 was not affecte d by any formulation at each droplet size.