Perkadox® PF-MT40 can be used as for the ambient temperature curing of MMA resins. Without the addition of an accelerator, the cure of the acrylate resin starts only above the activation temperature of 90°C. For the cure at ambient temperature, Perkadox® PF-MT40 must be accelerated with a combination of special accelerators. Together with the Accelerators R-913 and Ca(OH)2, a reasonable geltime is obtained with a fast cure at ambient temperatures. The most important advantage of a cure system based on Perkadox® PF-MT 40 is the absence of yellow discoloration and a lower residual monomer content compared to results obtained with a BPO/amine curing system.