PURPOSE: To obtain a novel polymer, containing dimethano-decahydro-fluorene as constituent units, having excellent heat resistance and transparency, chemical, solvent resistance, dielectric characteristics and well balanced mechanical properties, such as rigidity, and useful as a material for various molded articles.
CONSTITUTION: The aimed polymer, consisting of (A) 1.4,5.8-dimethano-1,2,3,4,4 a,4b,5,8,8a,9a-decahydro-9H-fluorene expressed by formula I and, as necessary (B) ethylene at 95/5W0/100 molar ratio (B/A) of the components (B) to (A) and having 0.005W20dl/g intrinsic viscosity [η] measured in toluene at 25°C. Furthermore, the above-mentioned polymer is preferably obtained by polymerizing the component (A) along or the components (A) and (B), normally using a Ziegler catalyst in a hydrocarbon medium, such as hexane, at -30W+200°C polymerization temperature under 0W20kg/cm2 polymerization pressure.
OSHIMA MASAYOSHI
NATSUUME YOSHIO
