Patent ID: 6476283
Filing Date: 2002-11-05
Classification: C08C,C08F

Abstract:
A process for selectively hydrogenating a polymer, copolymer or mixture thereof containing olefinic unsaturation comprising (a) contacting the polymer, copolymer or mixture with a hydrogenating agent in the presence of a catalytic amount of a divalent Group IV metal compound, which is represented by the structure:CpCpâ€²Mâ€¢Dâ€ƒâ€ƒ(Formula 1) wherein M is titanium, zirconium or hafnium, Cp and Cpâ€² are each substituted or unsubstituted cyclopentadienyl ligands, which are optionally the same or different from each other, and D represents a conjugated, neutral diene, which is coordinated via &pgr; complexation to the M atom.