Trigonox® C tbpb(tert butyl peroxybenzoate) may be used for the (co)polymerization of styrene in the temperature range of 100-140°C. In practice, combinations of two or more peroxides with diverging activities are used to reduce the residual monomer content in the final polymer and to increase reactor efficiency. Trigonox® C tbpb(tert butyl peroxybenzoate) is also an efficient initiator for the ethylene polymerization at high pressure in both autoclave and tubular processes. To obtain a wide spectrum of polymerization temperatures, Trigonox® C tbpb(tert butyl peroxybenzoate) is often used in combination with other peroxides. Depending on reaction conditions, Trigonox® C is active in the temperature range of 220-270°C.