3M Flame Retardant Additive FR-2025 is an additive for polycarbonate which can be used effectively at low usage levels. FR-2025 flame retardant additive can be formulated to produce optically-clear, haze-free grades of polycarbonate for extrusion and molding. It’s a non-brominated, non-chlorinated additive. 3M Flame Retardant Additive FR-2025 is an additive for polycarbonate which can be used effectively at low usage levels. FR-2025 flame retardant additive can be formulated to produce optically-clear, haze-free grades of polycarbonate for extrusion and molding. It’s a non-brominated, non-chlorinated additive. In addition, it is chemically and thermally stable up to 450°C. It is often use synergistically with fibrillating PTFE (Polytetrafluoroethylene) to achieve V-0 in UL 94 rating. FR-2025 has been found to be effective as a flame retardant without the use of synergists. For most effective incorporation it is recommended that the additive be initially dispersed into a 10% or more masterbatch and then compounded into the final plastic blend.