The addition of 2-acetoacetoxyethyl methacrylate (AAEMA) to aromatic isocyanate such as phenyl isocyanate or tolylene 2,4-diisocyanate, and the Knoevenagel condensation of AAEMA with aromatic aldehydes, respectively, yield polymerizable products. These monomers were characterized by elemental analyses, IR, H-1 NMR and partially by C-13 NMR spectroscopy. The radical polymerization of synthesized AAEMA-isocyanates adducts forms polymeric blocked isocyanates. The Knoevenagel condensate of AAEMA with benzaldehyde is radically polymerizable and tends to crosslink during its homopolymerization.