In this work, modified UV curable polyurethane was developed from isophorone diisocyanayte (IPDI) and 4, 4-methylene diisocyanate(MDI). The rigid moiety was incorporated into the polyurethane's main chain to enhance its heat resistance. The structure of the copolymer was verified by Fourier transform infrared spectroscopy (FT-IR). The prepared coating is utilized to examine features like gel time, surface dry, tack-free, and hard surface drying times. The physicochemical characteristics of castor oil-based modified polyols produced using phenolic resin and diethyleneglycol were discovered to have undergone considerable alterations. Variation in the physico-chemical parameters of synthesised polyol gives information for achieving appropriate polyurethane curing.