In order to overcome the current issues of the yellowing resistance，low toxicity，wear resistance，water resistance and other performance in current elastic floor coatings，a two-component elastic floor coatings with excellent performance of yellowing resistance，abrasion resistance，high elasticity had been developed. By using the low viscosity HDI biuret（HB-200）and modified castor oil polyester resin as raw materials，combined with suitable pigment，filler and additives. The effects of types of HDI curing agent and modified castor oil polyester resin on various properties of the paint film were investigated，and the product formulation
process was determined. The results showed that coatings prepared from modified castor oil polyester resin JL C330 and HB-200 has excellent elasticity，abrasion resistance，water resistance and other properties.