| 摘要 |
<p>A tough polymer of relatively high glass transition temperature and low crosslink density comprises the product of a ring-opening polymerization of 5-(3-cyclohexen-1-yl)-2-norbornene in the presence of a hindered-alkylphenoxy substituted tungsten halide and a cocatalyst and in the optional presence of dicyclopentadiene or norbornene-type crosslinking monomers.</p> |
