Abstract: For increasing in the transmittancy of rare earth metal-containing polymer,ten alkoxylneodymium-containing monomers, which have good compatibility with MMA,are synthesized by the reactions of neodymium alkoxides with maleic anhydride.Then ten alkoxylneodymium-containing copolymers are prepared by the copolymerizatons of these monomers with MMAusing AIBNas an initiator.Studies on optical properties of these copolymers indicate that, in comparison with PMMA, alkoxylneodymium-containing copolymers have higher transmittancy and refractive indexes,and their refractive indexes increase linearly with increasing Nd content.Moreover, they have Nd³⁺) ion characteristic light selective absorbability.So they may be a series of new type optical plastics.

Key words: Rare earth metal-containing polymer, Alkoxylneodymium-containing copolymers, Synthesis, Optical property