| abstract |
[PROBLEMS] To provide a functional group capable of imparting functions such as reactivity, radical polymerizability, flame retardancy, and adhesion to various substrates, which is useful for improving the properties of various polymer materials, at one end. And a metathesis ring-opened polymer of dicyclopentadiene having a reduced molecular weight. In a metathesis ring-opening polymerization of dicyclopentadiene, a molecular weight is suppressed by using an allyl compound having a functional group in the presence of a carbene complex catalyst of ruthenium or osmium, and a dicyclopentane having a functional group at one end is used. A ring-opened polymer of pentadiene is obtained. |