Process for production of hydrogenated polymers and hydrogenated polymers

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 R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 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 R11, R12, R13, R14, R15, R16, R17 and R18 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.