If main features of the resin kinetic crystallization behavior are properly described by the model, at room temperature volume fractions of each of the two phases would reach maximum value within very short times, of the order of those reported in Fig. 14. Thus, also at the highest cooling rates to room temperature the a crystallization phase can be prevented from crystallizing to xm,a only by effect of a faster kinetic process toward the mesomorphic phase, competing for the available amorphous.