Novel catalyst for hydrogenation of polymer and process for hydrogenating polymer with the catalyst

摘要

A hydrogenation catalyst consisting essential­ly of (A) at least one bis(cyclopentadienyl)titanium compound represented by the formula (1): wherein R¹ and R², which may be the same or different, represent halogen atoms, hydrocarbon groups, aryloxy groups, alkoxy groups or carbonyl groups, and (B) at least one lithium compound represented by the formula (2):R³O-Li      (2)wherein R³ represents a hydrocarbon group, or a reaction mixture of an organolithium compound with an alcoholic or phenolic hydroxyl group-containing compound, the (A) component/the (B) component molar ratio being 1/0.5 to 1/20, and optionally (C) at least one reducing organo­metallic compound selected from the group consisting of aluminum compounds, zinc compounds and magnesium com­pounds, the (A) component/the (C) component molar ratio being 1/0.5 to 1/20. The above hydrogenation catalyst is effectively applied to the hydrogenation of a polymer having olefinic double bonds to produce a hydrogenated polymer having a high degree of hydrogenation at a high hydrogenation rate with a high reproducibility.