Date of Award
Master of Science in Engineering Science- (M.S.)
Chemical Engineering and Chemistry
David S. Kristol
George Y. Lei
Howard David Perlmutter
A trimethylolpropane adduct of tolylene-2,4-diisocyanate (TMP-TDI) was prepared by reaction in a heterogeneous solvent system. The isocyanate functional groups of the TMP-TDI adduct were blocked with the following blocking agents: p-cresol, eugenol, o-chlorophenol, and one to one mole ratio of mixtures of 2-hydroxyethyl methacrylate (HEMA) and each of the three preceding blocking agents. A sample of TMP-TDI adduct blocked with only HEMA was also prepared. The products were characterized by melting point, infrared spectroscopy, and elemental analysis. Monomers of TMP-TDI blocked with 50% HEMA and 50% blocking agents may be very useful as dental restorative materials.
Forohar, Farhad, "Synthesis of trimethylpropane-tolylene-2,4-diisocyanate adduct and its blocked monomers" (1984). Theses. 2143.