| 摘要 |
<p>A norbornene polymer comprising 20 to 100 mole % (based on the total amount of the repeating units) of repeating units derived from a norbornene monomer which has a cyclic hydrocarbon structure (I) derived from a norbornene ring which constitutes at least part of the main chain, a cyclic C4-C6 hydrocarbon structure sharing one carbon-carbon bond with the structure (I), and a mono- or polycyclic hydrocarbon structure (III) sharing at least one carbon-carbon bond with the structure (II), characterized in that the number-average molecular weight is 1,000 to 1,000,000 and that the 13C-NMR spectrum as determined in heavy chloroform (with TMS as reference) has areas (A) and (B) of the peaks assignable to the methylene present in the structure (III) as found on the higher and lower magnetic field sides, respectively, satisfy the relationship: B/(A + B) ≤ 0.30 and a process for the preparation thereof.</p> |
