Patent ID: 7910670
Filing Date: 2011-03-22
Classification: B01J,C07C,C08F,Y02P

Abstract:
1. A method of making an olefin oligomerization catalyst, comprising contacting a chromium-containing compound, a heteroatomic ligand, and a metal alkyl, wherein the chromium-containing compound comprises less than about 5 weight percent chromium oligomers, and wherein the chromium-containing compound comprises a chromium(III) carboxylate selected from the group consisting of chromium(III) isooctanoate, chromium(III) tris(2-ethylhexanoate), chromium(III) oxy-2-ethylhexanoate, chromium(III) dichloroethylhexanoate, chromium(III) butyrate, chromium(III) neopentanoate, chromium(III) laurate, chromium(III) stearate, chromium(III) oxalate, chromium(III) benzoate, chromium(III) octanoate, chromium(III) propionate, and combinations thereof.