Using a 3 mm thick mold trying to reproduce common industrial situations, a general purpose UPR was cured with styrene, methyl ethyl ketone peroxide (MEKP) and cobalt naphthenate. Modelling of the curing reaction (using a 2 k with 5 central points design), tensile and impact strength and glass transition temperature was accomplished. To obtain close fitting, parameters interaction was considered for modelling
