| 摘要 |
A two-part curable urethane composition is provided to maintain coating property after the long-term preservation and to ensure excellent storage stability because time to need until it is hardened after the completion of working is not changed. A two-part curable urethane composition comprises a basic material(I) and a hardener(II). The basic material (I) comprises a urethane prepolymer(A) having at least two isocyanate groups at the end, which is obtained by reacting polyisocyanate and polyoxyalkylene polyol and a urethane compound(B) having at least oxazolidine group at the end. The hardener(II) comprises a retarder(C) consisting of at least one kind of an organic acid metal salt and water-in-oil emulsion(D). The at least one kind of an organic acid metal salt is selected from the group consisting of organic acid potassium, organic acid cobalt, organic acid manganese, organic acid copper, organic acid iron, organic acid calcium, organic acid zinc, organic acid aluminium, organic acid zirconium, organic acid barium, organic acid lithium, organic acid nickel, organic acid neodymium and organic acid tin. The water content of (D) is 0.1~1.5 weight% based on the two-part curable urethane composition. |
