Extending the Temperature Range of RIM Materials

The evolution of new generation flexible RIM urethane fascia formulations has resulted in improved performance over wider temperature ranges. The new formulations have exhibited resistance to fracture at -20°F(-29°C) in 180 degree mandrel bend tests, falling Dart impacts and pendulum impacts when painted with low extension polymer coatings. Firebird fascia produced from one of the improved formulations and painted with D-100 white topcoat finish have completed numerous series of nine pendulum impacts at -20°F (-29°C) without damage. This formulation is now in commercial production on Model Year 1978 bumper fascia.