Curing reaction of bisphenol-A based benzoxazine with cyanate ester resin and the properties of the
two peaks (x, 79.1ppm and y, 50.7ppm) assigned to the carbon of benzoxazine ring and a peak (z, 108.8 ppm) assigned to the carbon of cyanate ester group were not detected. The peak (p) assigned to C1 carbon of the benzene ring adjacent to phenolic hydroxy...