| 摘要 |
<p>Urethane-(meth)acrylates (I), obtd. by reacting (A) isocyanates with (B) polyether-, polyester- or epoxide-(meth)acrylates with at least one free OH gp., in which 0.5-60 mole% of the (meth)acrylate gps. are in the form of a Michael adduct with prim. or sec. amine. Also claimed is (i) the above process for the prodn. of (I) (in this case 0.5-30 mole% of the (meth)acrylate gps. are stated to be in the form of the Michael adduct); (ii) radiation-hardenable materials (II) contg. (I).</p> |
