The New Jersey Institute of Technology's
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Title:	Synthesis of trimethylpropane-tolylene-2,4-diisocyanate adduct and its blocked monomers
Author:	Forohar, Farhad
View Online:	njit-etd1984-025 (vi, 66 pages ~ 2.2 MB pdf)
Department:	Department of Chemical Engineering and Chemistry
Degree:	Master of Science
Program:	Engineering Science
Document Type:	Thesis
Advisory Committee:	Kristol, David S. (Committee chair) Lei, George Y. (Committee member) Perlmutter, Howard David (Committee member)
Date:	1984-09
Keywords:	Monomers Isocyanates
Availability:	Unrestricted
Abstract:	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.