In the present study, unsaturated polyester resins based on castor oil was synthesized. Structure
elucidation of the synthesized unsaturated polyester resin was done by FTIR and 1H NMR spectroscopy.
Thermogravimetric analysis was used to evaluate the thermal stability of cured unsaturated polyester
resin. Thermogram plot was further utilized to calculate various other parameters such as statistic
heat-resistant index (Ts) and the integral procedural decomposition temperature (IPDT). Comparable
properties with respect to commercial resins were reported for the synthesized polymers