RADIATION-CURABLE URETHANE ACRYLATES, BASED ON A BLEND OF VARIOUS OXYALKYLATED POLYOLS

摘要

A urethane acrylate is prepared from a diisocyanate and/or polyisocyanate, and a hydroxyfunctional partial ester which is the reaction product of acrylic acid and/or methacrylic acid with oxalkylated polyols containing /- 3 hydroxyl groups. A urethane acrylate is prepared from a diisocyanate and/or polyisocyanate, and a hydroxyfunctional partial ester. The ester is the reaction product of acrylic acid and/or methacrylic acid with oxalkylated polyols containing /- 3 hydroxyl groups. The oxalkylated polyols comprise 25-75 mole % polyol having a degree of oxalkylation of 3-5, and 75-25 mole % of a polyol having a degree of oxalkylation of 8-25. Independent claims are also included for: (1) a method for making a low viscosity, radiation-hardenable urethane acrylate comprising partially esterifying oxalkylated polyols with acrylic acid and/or methacrylic acid, and reacting the resulting product with a diisocyanate and/or polyisocyanate; and (2) a material coated with the inventive coating composition.