Polyesteramide (PEA) resin was synthesized by following step. The reaction mixture of diethanol amine (0.01 mol) and sodium methoxide (0.5 %) added with respect to the oleic acid (0.141 g) were charged in a four-necked round-bottom flask with fitted a dropping funnel, a nitrogen purging system. Oleic acid (0.01 mol, 2.82 g) dropwise added into the above reaction mixture up to 35 min with constant mechanical stirring as well as in the presence of N2 gas at 145–155 0 C. The progress of polyesteramide reaction was monitored by determination of the acid value. The reaction was continued until the theoretically calculated amount of water of the reaction was removed from reaction mixture and the acid value has been reached less than 10. Later than
