The choice of the DOT degradable monomer unit (simply "green") is dictated by its nonreactivity with radical methacrylate derivative units (simply "blue" units) so that its incorporation should be only directed by the auxiliary comonomer unit (simply "red" unit), either an acrylate or maleimide unit, as shown in Figure (aim of no "green" after "blue" but "green" after "red"). The potential of an auxiliary comonomer to modify the reactivity of methacrylate derivatives has been previously demonstrated by Charleux and Nicolas for nitroxide mediated polymerization, and for efficient enhanced spin-capturing polymerization by Junkers and Barner-Kowollik. Recently, Niu and coworkers as well as Sardon et al. proposed to introduced either maleimides or crotonate esters to increase the incorporation of CKA into methacrylate based polymers.