Hyperbranched multimethacrylate resins of low viscosity and low oxygen inhibition for dental applications

摘要

This work presents the syntheses and characterization of new low viscosity and low oxygen inhibition hyperbranched multimethacrylate macromonomers capable of photopolymeriza-tion, for application in dental composites. Two types of multimethacrylate resins were synthesized. One based on bisphenol A core and polyether branches and the other one based on trimethylol-propane (TMP) and polyether structure containing urethane bonds, obtained with isocyanate or non-isocyanate method. The monomers were characterized by spectroscopic methods. The conversion of double bonds was investigated by FTIR. The physical properties of the multimethacrylate resins such as viscosity, density and polymerization shrinkage were determined. Based on the results obtained it has been shown that such resins are attractive materials to use in composites, especially dental ones.