Chevron Phillips Chemical Company LP

Eric R Fernandez

Steven M Bischof

Orson L Sydora

Uriah J Kilgore

Jared T Fern

Steven Ross Hutchison

Ray Rios

Jared Fern

Disclosed herein are processes, systems, and reaction systems for the oligomerization of ethylene to form an ethylene oligomer product in a reaction zone using a catalyst system having i) a chromium component comprising a heteroatomic ligand chromium compound complex of the type disclosed herein, and ii) an aluminoxane. A Colefin can be present in the reaction zone for a period of time, where the Colefin is not an ethylene oligomer formed in-situ within the reaction zone.

Reduced polymer formation for selective ethylene oligomerizations

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

Disclosed are processes, systems, and reaction systems for the oligomerization of ethylene to form an ethylene oligomer product in a reaction zone using a catalyst system comprising (a) 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 (b) an aluminoxane. A Colefin can be present in the reaction zone for a period of time, where the Colefin is not an ethylene oligomer formed in-situ within the reaction zone.

Growing community of inventors

Houston, TX, United States of America

Eric R Fernandez