The New Jersey Institute of Technology's
Electronic Theses & Dissertations Project

Title:	Synthesis and characterization of a novel blocked isocyanate dental adhesive based on diphenylmethane - 4, 4' - diisocyanate
Author:	Lin, Yangming
View Online:	njit-etd1988-042 (iv, 59 pages ~ 1.5 MB pdf)
Department:	Department of Chemical Engineering, Chemistry and Environmental Science
Degree:	Master of Science
Program:	Chemical Engineering
Document Type:	Thesis
Advisory Committee:	Kristol, David S. (Committee chair) Lei, George Y. (Committee member) Lin, Chen-Chong (Committee member)
Date:	1988-01
Keywords:	Dental adhesives Isocyanates Monomers
Availability:	Unrestricted
Abstract:	The dental adhesive monomers based on diphenylmethane - 4,4 - diisocyanate (MDI) were prepared and studied in this research. The diisocyanate, MDI, was first reacted with hydroxyethyl methacrylate (HEMA) to form an intermediate adduct. This adduct had an active isocyanate end group. It was then bonded with o-chlorophenol (OCP), a blocking agent, to produce a blocked isocyanate monomer. The new blocked isocyanate (HEMA-MDI-OCP) was found to have an average value of more than 1200 psi in tensile tests measuring its adhesion to dentin slices.