MITTEL 6777 is an additive specifically formulated to reduce the greening effect in unsaturated polyesters that are cross-linked using the redox system. This property is highly beneficial for white pigmented polyester primers and transparent primers intended for light-colored woods like beech, ash, or pine. The use of MITTEL 6777 might lead to a reduction in the drying speed of unsaturated polyesters, making the dosage choice critical to balance benefits and disadvantages. It can be incorporated by simple stirring without special precautions.