| abstract |
Catalysts and Procedures for the Hydrogenation of Olefins or Polymers. The present invention relates to catalyst compositions which comprise at least: a) a metal compound cation of the formula [(A) (B) ML +] where M represents titanium, zirconium, or hafnium, where A and B represent binders with structure I or II. Wherein R1 independently represents the same or different hydrocarbyl groups optionally containing heteroatoms, and R3 independently represents the same or different hydrocarbyl groups optionally containing heteroatoms, or a halide, and in which the substituents R may be options between A and B to provide a bridge, where M is an integer from 0-5, p is an integer from 0-4, and q is an integer from 0-3, where L represents the hydrogen or hydrocarbyl group which optionally they contain heteroatoms, with the proviso that if A and B are both binders with structure I and II, at least one of m, p or q is at least 1, and b) a different stable anion. The present invention further relates to a process for the preparation of a catalyst composition and to a process for the catalytic hydrogenation of olefins, oligomers, polymers or copolymers. |