The aim of this work is to generate both a master curve of resol resins based on the time-temperature superposition principle and their TTT cure diagrams. The samples used for this purpose were lignin-phenolic and phenol-formaldehyde resol resins. A TMA technique was employed to study the gelation of resol resins. In addition, a DSC technique was employed to determine the kinetic parameters through the Ozawa method, which allowed us to obtain isoconversional curves from the data fit to the Arrhenius expression. Establishing the relationship between the glass-transition temperature and curing degree allowed the determination of the vitrification lines of the resol resins. Thus, using the experimental data obtained by TMA and DSC, we generated a TTT cure diagram for each of resins studied. (c) 2006 Wiley Periodicals, Inc.