PURPOSE: To obtain a hydrogenated ring-opening polymer at a high degree of hydrogenation by hydrogenating nonarom. carbon-carbon double bonds of a ring-opening norbornene polymer in the presence of a hydrogenation catalyst contg. a specific ruthenium compd.
CONSTITUTION: A norbornene deriv. of formula I (wherein A and B are each H or a 1-10C hydrocarbon group; X and Y and each, H halogen, or a monovalent org. group, and m is 0 or 1) alone or together with a copolymerizable monomer is subjected to ring-opening polymn. to give a ring-opening polymer. Then, nonarom. carbon-carbon double bonds of the polymer are hydrogenated in the presence of a hydrogenation catalyst comprising a ruthenium compd. of formula II (wherein Q is halogen; T is CO, NO, etc.; and Z is PR1R2R3 wherein, R1, R2 and R3 are each alkyl, etc.), an alkali metal compd. of formula III (wherein R4 is alkyl, etc.; and M1 is Li, Na, or K), and an organoaluminum compd. of formula IV (wherein R5, R6, and R7 are each alkyl, etc.), giving the objective polymer.
YOSHINARI MASAJI
OSHIMA NOBORU
