Methods of preparation of an olefin oligomerization catalyst (Chevron Phillips)

CATEGORY: OLEFIN CATALYST 
Methods of preparation of an olefin oligomerization catalyst (Chevron Phillips)

Type	Patent
Inventor	Ronald D. Knudsen
Inventor	Bruce E. Kreischer
URL	Free Full Text Source:  http://www.google.com/patents/US8993822
Assignee	Chevron Phillips Chemical Company Lp
Patent Number	US8993822 B2
Issue Date	Mar 31, 2015
Abstract	A method of making a catalyst for use in oligomerizing an olefin comprising a chromium-containing compound, a pyrrole-containing compound, a metal alkyl, a halide-containing compound, and optionally a solvent, the method comprising contacting a composition comprising the chromium-containing compound and a composition comprising the metal alkyl, wherein the composition comprising the chromium-containing compound is added to the composition comprising the metal alkyl.