Patent ID: 6743960
Filing Date: 2004-06-01
Classification: C07C

Abstract:
A method for producing oligomers having less than 40 carbon atoms using at least one olefinic monomer selected from the group consisting of ethylene, propylene, butenes, hexenes, octenes and mixtures thereof, the method comprising the step of contacting a feed comprising the olefinic monomer under oligomerizution conditions with a catalyst composition comprising the reaction product of:(a) a compound having a formula selected from the group consisting of M[S2C2(RaRb)]2 and M[S2C6(R1R2R3R4)]2, wherein M is a late transition metal, Ra, Rb, R1, R2, R3 and R4 are independently selected and may be the same or different and are selected from hydrogen, electron-withdrawing groups and unsubstituted and substituted hydrocarbyl groups; and (b) an alkylaluminoxane activating cocatalyst, whereby an oligomer is formed.