For the modeling, we started from the benchmarked CMMC model of De Smit et al. This kinetic model is the leading model for radical homo-and copolymerization with MMA as main monomer, accounting for diffusional limitations, specifically the gel-effect. In the present work, we have enhanced this model with (cross-)propagation reactions involving DOT and MA/PhMal as well as chain transfer reactions, particularly chain transfer to MMA with a DOT terminal active chain.