Properties of UV curable polyurethane acrylates synsthesized by nonyellowing polyisocyanate

UV curable polyurethane for iron sheet coating was synsthesized by using nonyellowing polyisocyanates. The effect was investigated of the chemical structrue of the Polyisocyanates and hydroxyacrylates, and the compositions of the prepolymer or diluent on the properies of the UV curable polyurethane acrylates.