Polyurethane networks based on polyesteramide polyol using castor oil and diethanolamide (DEA) were proposed to study doing this wide. To utilize oil in the preparation of polyesteramide polyol (PEA). The chemical structure of the synthesized resin was characterized by spectroscopic techniques like FTIR, NMR etc. Various physical properties such as acid value, saponification value, iodine value, hydroxyl value, the amine value of resin were also determined. CO was then converted into diethanolamide castor oil of mixed fatty acid using 0.5 % sodium methoxide as a catalyst and converted to polyesteramide resin after with various dibasic acid in presence of xylene as azeotropic solvent. PU themselves were prepared from the reaction of polyester amide polyol of castor oil (PEA) and isocyanate-terminated polyurethane prepolymer. The PU coating obtained was then analyzed for its physical-chemical, film performance properties and resistance to the various chemical.