Benzophenoneoxime(BZPO), ethyloximinocyanoacetate(EOCA), and terephthaldio- xime(TPDO) were synthesized from benzophenone, ethylcyanoacetate, and terephthalaldehyde, respectively. Oxime derivatives were synthesized from 6ximes with benzoylchloride, toluoylchlo-ride, anisoylchloride, ethylchlorocarbonate, and acetylchloride. And oxime monomer, benzophe-none-g-methacryloyloxime (BZMO), was synthesized from methacrylolychloride with BZPO. Photodegradation of oxime derivatives was carried out by the irradiation of W light in which the free radicals, produced during the photodegradation, could initiate vinyl monomer. The relative decomposition efficiency of oxide derivatives was estimated by comparing UV absorbance decreasing at Lmax in function of irradiation time. In addition, polymers containing oxime ester in pendant group, p(BZMO- MMA), were photografted with vinyl monomer. The graft yield of polymers increased with the mole fraction of BZMO.