Nonaqueous dispersion copolymerization of 2-isopropenyl 2-oxazoline (IPRO) with methyl methacrylate (MMA) and chloromethylstyrene (CMS) was studied. The resulting copolymers were analyzed with FT-IR and FT-NMR techniques. The morphologies and average diameter were investigated for the characterization of the resulting particles. When the comonomer was MMA the particle size was dependent upon the molar ratio MMA/IPRO in copolymer. MMA content in the resulting copolymers is influenced by the type of stabilizing agent. Narrow size distribution was obtain for copolymer rich in IPRO. When CMS was the commoner, polymerization occurred via two mechanisms: radicalic and cationic with preference for the last one.