2021-11-10
A hydrogenated resin which is produced by hydrogenating a polymer containing repeating units of linear poly-addition type comprising cyclopentadiene monomer, wherein at least 90 % of the carbon-carbon double bonds in the repeating units are hydrogenated, and which has the limiting viscosity of 0.1-10 dl/g as measured in toluene at 25 °C. This resin does not contain cross-linked gel, is excellent in clarity, lightfastness, moisture resistance, moldability, mechanical strengths and chemical resistance, and has a low birefringence, thus being suitable as optical materials, medical polymer materials, electrical insulation materials, electronic component materials, and so forth.
