Hydrogenated ring-opening polymer and process for producing same.

摘要

The present invention provides a hydrogenated polycyclic norbornene ring-opening polymer which is excellent in heat resistance, optical characteristics and processability which comprises recurring units represented by the following formula [I] and [II] or these recurring units substituted with alkyl in an amount of at least 10 mol% based on total polymer units and has an intrinsic viscosity [ eta ] of 0.01-20 dl/g measured in toluene at 20 DEG C, with at least 50% of C --- C bonds which constitute main chain being single bonds: <CHEM> wherein --- denotes a double bond or a single bond. o