Chevron Phillips Chemical Company LP

Ray Rios

Steven M Bischof

Orson L Sydora

Uriah J Kilgore

Jared T Fern

Steven Ross Hutchison

Eric R Fernandez

Brooke L Small

Uriah Kilgore

Steven Hutchison

Steven Bischof

Jared Fern

Eric Fernandez

Disclosed are processes, systems, and reaction systems for the oligomerization of ethylene to form an oligomer product in a reaction zone using a catalyst system having i) a chromium component comprising an N-phosphinyl amidine chromium compound complex, an N-phosphinyl formamidine chromium compound complex, an N-phosphinyl guanidine chromium compound complex, or any combination thereof, and ii) an aluminoxane. Ethylene can be contacted with an organic reaction medium to form an ethylene feedstock mixture prior to contact with the catalyst system. The ethylene feedstock mixture can be contacted with the catalyst system inside or outside of the reaction zone.

Process improvements in selective ethylene oligomerizations

Processes for oligomerizing olefins utilizing a catalyst system including a) a transition metal complex that is transition metal compound complexed to a pyridine bisimine ligand and b) a metal alkyl and controlling the olefin oligomer product distribution K value by adjusting i) a transition metal of the transition metal complex concentration in the reactor, ii) a metal of the metal alkyl concentration in the reactor, iii) a metal of the metal alkyl to transition metal of the transition metal complex molar ratio in the reactor, and iv) any combination thereof.

Olefin oligomerization methods

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Cypress, TX, United States of America

Ray Rios