CPC C07C 2/36 (2013.01) [B01J 31/143 (2013.01); B01J 31/2447 (2013.01); B01J 2231/20 (2013.01); C07C 2531/14 (2013.01); C07C 2531/24 (2013.01)] | 20 Claims |
1. A process comprising:
a) contacting in a reaction zone
i) ethylene at a partial pressure in a range of from 5 psi to 2500 psi;
ii) a catalyst system comprising;
(a)(1) a bicyclic 2-[(phosphinyl)aminyl] cyclic imine chromium salt complex having Structure BPACICr I or Structure BPACICr II
or
(a)(2) a chromium salt and a bicyclic 2-[(phosphinyl)aminyl] cyclic imine having Structure BPACI I or Structure BPACI II
wherein
R21, R22, R23, and R24 independently are a hydrogen or a C1 to C30 organyl group,
L1, L2, and L3 independently are a C1 to C30 a hydrocarbylene group,
R4 and R5 independently are a C1 to C30 organyl group and
R4 and R5 optionally are combined to form L45 forming a ring or ring system including the phosphorus atom where L45 is a C1 to C30 organylene group,
CrXp is a chromium salt wherein X is a monoanion, and wherein p is an integer from 2 to 6, and
(b) an organoaluminum compound;
iii) optionally an organic reaction medium; and
b) forming an oligomer product in the reaction zone.
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