| 摘要 |
<p>A polyester-modified polydiene/acrylourethane oligomer which is the reaction product of an olefinically unsaturated compound and a polyester-modified polydiene urethane prepolymer. The polyester-modified polydiene urethane prepolymer is the reaction product of a polyisocyanate and a polyester-modified polydiene-polyol. The polydiene polyol is modified to contain polyester functionality by reacting the polydiene polyol with a polyester-forming monomer such as a lactone, a hydroxyl-functional carboxylic acid or a hydroxyl-functional carboxylic acid ester. The acrylourethane oligomer may be utilized in combination with a reactive diluent system to form a radiation-curable composition which does not undergo phase separation upon storage. Upon cure, the radiation-curable composition forms a protective coating which exhibits excellent resistance to stain and wear.</p> |
