Synthesis and characterization of alkyd resin based on soybean oil and glycerin using zirconium octoate as catalyst

Abstract

A one pot synthesis of alkyd resins based on the soybean oil and glycerin with  the zirconium octoate (zirconium 2-ethyl hexanoate) as a new renewable raw material was performed. The alcoholysis reaction of soybean oil and glycerin carried out in absence of nitrogen gas inlet in the presence of zirconium octoate. The alkyd resin was obtained from polycondensation of the alcoholysis products with phthalic anhydrid at 250 °C. The structure confirmed by FT-IR and H1-NMR spectroscopy. Flexibility, drying time, hardness, adhesion test, impact resistance, gloss test and chemical resistance of synthesized alkyd resins was invesitigated. The prepared resin was formulated in white lacqure and yellowing resistance tested with commercial resins.