Peroxide initiator used for curing of unsaturated polyester polyester, vinyl ester and acrylic resins. For curing at ambient temperature, it is required to add tertiary amine e.g. DMA as accelerator. Above 80°C it can be used without addition of the accelerator. Especially recommended for curing of polyester putties, resin concretes and hot moulding. Characterized by high reactivity even at low temperatures. The product is available with red and green pigment.