CAS number: 13122-18-4

EINECS/ELINCS No: 236-050 7

Applications: For Polymer Production: Polymerization of ethylene: Trigonox 42S is an efficient initiator for the ethylene polymerization under high pressure in both autoclave and tubular processes. To obtain a wide spectrum of polymerization temperatures, combinations with other peroxides are applied in practice. Depending on reaction conditions, Trigonox 42S is active in the temperature range of 210-240°C. Polymerization of acrylates and methacrylates: Trigonox 42S can be used as initiator for the solution (co)polymerization of acrylates and methacrylates in the temperature range of 90-175°C, amongst others for the manufacture of coatings. Trigonox 42S can also be applied as an initiator for the bulk and suspension (co)polymerization of acrylates and methacrylates in the temperature range of 90-130°C. Polymerization of styrene: Trigonox 42S may be used for the (co)polymerization of styrene in the temperature range of 90-140°C. For Thermoset: Trigonox 42S, tert-butylperoxy-3,5,5-trimethylhexanoate, is a perester which is used for the curing of unsaturated polyester resins at elevated temperatures. Trigonox 42S is preferred for the curing of UP resin based Hot Press Moulding formulations (SMC, DMC, BMC etc.) in the temperature range of 120 - 170°C. In combination with a cobalt accelerator (e.g. Accelerator NL-53N, 10% cobalt) Trigonox 42S is also applicable for the cure of UP resins in the temperature range of 70°C and higher. Application area can be air drying lacquers, diplacquers, filament winding etc. Trigonox 42S has in comparison with Trigonox C, tert-butylperbenzoate, a somewhat higher reactivity in the pure resin as well as in HPM formulations.

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