Patent ID: 8044149

Claim:
A process of producing a hydrogenated polymer, which comprises: subjecting, in the presence of a ruthenium carbene complex, at least one kind of a cyclic olefin selected from a cyclic monoolefin represented by formula 1 wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 and R 10 are each a hydrogen atom, a halogen atom, an optionally substituted alkyl group, an optionally substituted cycloalkyl group, an optionally substituted aryl group, a hydroxyl group, an alkoxy group, a carbonyl group, an ester group, a carboxyl group or a salt of a carboxyl group, wherein any plural members thereof optionally form a cyclic structure together with carbon atoms bonded thereto, and m and n are each an integer of 0 to 4, wherein the total number of m and n is not less than 3, and a cyclic diolefin represented by formula 2 wherein R 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R 17 and R 18 are each a hydrogen atom, a halogen atom, an optionally substituted alkyl group, an optionally substituted cycloalkyl group, an optionally substituted aryl group, a hydroxyl group, an alkoxy group, a carbonyl group, an ester group, a carboxyl group or a salt of a carboxyl group, wherein any plural members thereof optionally form a cyclic structure together with carbon atoms bonded thereto, and p and q are each an integer of 0 to 4, wherein the total number of p and q is not less than 3, to a ring-opening metathesis polymerization; hydrogenating the resulting ring-opening metathesis polymer to obtain a reaction mixture comprising a hydrogenated polymer; and mixing the reaction mixture with a poor solvent of the hydrogenated polymer under a hydrogen atmosphere to contact the hydrogenated polymer with the poor solvent in the presence of dissolved hydrogen and to allow precipitation.