| 摘要 |
<p>A description is given of prepolymers consisting of an aliphatic or alicyclic polyurethane chain, the chain ends of which consist partly of free isocyanate groups and partly of radically polymerisable unsaturated groups. These prepolymers are thermally pregelifiable and postpolymerisable with moisture. Adhesive mastics are made from them which are themselves pregelifiable and postpolymerisable, valued in particular for sticking glass onto a metal or composite substrate in automobile bodywork (coach building).</p> |
