Patent ID: 7994376
Filing Date: 2011-08-09
Classification: C07C

Abstract:
1. A method comprising: contacting an oligomerization catalyst system and a feed comprising olefins and a diluent; oligomerizing said feed in at least one continuous reactor; and withdrawing from said at least one continuous reactor an effluent comprising product olefins having at least four carbon atoms, wherein the effluent comprises the diluent and wherein the diluent comprises 1-butene, 1-dodecene, 1-tetradecene, 1-hexadecene, 1-octadecene, or combinations thereof; wherein the oligomerization catalyst system comprises a metal complex activated by a co-catalyst and wherein said metal complex comprises a ligand having chemical structure II: wherein R R Y is a structural bridge between two halves of the structure and is selected from the following group: (A) Y is cyclohexane and W, and Z are each independently hydrogen, hydrocarbyl, an inert functional group, or substituted hydrocarbyl having from about 0 to about 30 carbon atoms; (B) Y, W and Z are selected to provide the following structure: wherein R R Y any two of R wherein R R Y any two of R and wherein said metal complex further comprises iron or cobalt, or combinations thereof; and wherein oligomerization to product olefins having at least four carbon atoms comprises a single pass conversion of ethylene of at least about 40 weight percent.