For the purpose of developing an effective surface finish for copper, imidazole-silane copolymers were synthesized by radical copolymerization of 1-vinylimidazole and methacryl or styryl silane coupling agents. It was found that the reactivity of 1-vinylimidazole was very low as in the case of the copolymerization with styrene or other vinyl monomers. Monomer reactivity ratios obtained from Kelen-Tudus plots were 0.079 (r(1); imidazole) and 1.39 (r(2); methacryl silane), and 0.002 (r(1); imidazole) and 6.9 (r(2); styryl silane). According to the reactivity ratios, it was presumed that the imidazole moiety was sandwiched between the silane groups in the early stage of the copolymerization.