Trigonox® 21S, tert-Butyl peroxy 2 ethylhexanoate, is a perester which is used for the curing of unsaturated polyester resin at elevated and high temperatures. Trigonox® 21S is preferred for the curing of UP resin based Hot Press Molding formulation (such as SMC and BMC) in the temperature range of 120 - 160°C. As Trigonox® 21S is a high reactive peroxide, it is very suitable as a kicker in formulations for pultrusion and SMC/BMC. In combination with a cobalt accelerator, Trigonox® 21S is also applicable for the cure of UP resins in the temperature range of 60°C and higher. Application area can be air drying lacquers, diplacquers, wall panels, filament winding, etc.
Hot press molding,
Acrylic solid surface