Polymer-analogous conversions of polymers with anhydride structures are interesting reactions which produce polymers with increased or reduced thermal stability dependent on the introduced side chains. Polymer reactions in the melt are performed in the kneader (discontinuous) and in the extruder (continuous). In contrast to chemical conversions in solution or suspension, solvents and detergents are not necessary. The reactions of MA copolymers with omega-amino acids have, until now, only been studied in solution with alternating S/MA copolymers.