The monomeric diglycidyl ether of bisphenol-A cured with methylenedianiline has been studied by pulsed NMR. Values of the proton relaxation times T 1 , T 1 p , and T 2 have been measured over the temperature range 160 to 200°C. The system was studied after being fully postcured at 180...
In the above condensation the aniline and formaldehyde react to form, as a highly transient intermediate, methylene dianiline (I). It is believed that the symmetrical N,N',N"-triphenylhexahydrotriazine (II) is also formed at this stage and that its subsequent behavior parallels the behavior of...
Journal of Polymer Science Polymer Physics EditionD. W. Larsen and J. H. Strange, "Diglycidyl ether of bisphenol-A with 4,4′-methylenedianiline: a pulsed NMR study of the curing process," Journal of Polymer Science Part A-2: Polymer Physics, vol. 11, no. 7, pp. 1453-1459, 1973....
proton spectrumThe application of Fourier transform two-dimensional n.m.r. spectroscopy to the study of the epoxy resin monomer, tetraglycidyl methylenedianiline, TGMDA, is reported. The combination of homonuclear proton 2D-J resolved and shift correlated SUPERCOSY experiments permits the complete ...