| 摘要 |
<p>A composition consisting essentially of a solution in an aliphatic diisocyanate of the reaction product of at least two moles of said aliphatic diisocyanate, preferably 4,4 min -methylenebis (cyclohexylisocyanate), with the addition product formed from one mole of a diprimary aliphatic diamine, preferably 4,4 min -methylenebis (cyclohexylamine), and at least one mole of an activated monoethylenic compound, e.g. methylacrylate.
<??>A polyurethane prepolymer based on this compositions and a polyhydroxy compound, e.g. a polypropylene ether triol, may be moisture cured in the presence of a catalyst, preferably dibutyltin dilaurate.
<??>Such moisture-curable polyurethan compositions are useful in polyurethane coatings, especially for decorative surfaces, such as flooring. </p> |
