| abstract |
Disclosed is a catalyst system for the selective trimerization of olefins, the catalyst system is 1 3 wherein the formula (Cp-B (R) n Ar) TiR, Cp is optionally A substituted cyclopentadienyl-type ligand, B is a bridging group based on a single atom selected from Groups 13 to 16 of the periodic system, and Ar is an optionally substituted aromatic group R is independently hydrogen or an optionally substituted hydrocarbon residue, optionally containing a heteroatom, or R and B are linked together to form a ring; N is an integer equal to (valence of B-2), and R 1 is a monoanionic group] and a catalyst system further comprising an activator. The catalyst system prevents the use of toxic chromium compounds. |