Trigonox® B Di-tert-butyl peroxide (dtbp peroxide) is an efficient initiator for the production of Low Density Polyethylene (LDPE). It is used both for tubular and autoclave processes. In most cases a combination with other peroxides is used to ensure a broad reactivity range. Trigonox® B (dtbp chemical) may also be used for the polymerization and copolymerization of styrene in the temperature range of 95-185°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.