Patent ID: 6734329
Filing Date: 2004-05-11
Classification: C07C

Abstract:
An improved solvent-free oligomerization process for the oligomerization of an alpha olefin, said process comprises:charging to an oligomerization reaction zone an oligomerization feed mixture comprising said alpha olefin; contacting within said oligomerization reaction zone said oligomerization feed mixture with a catalyst complex consisting essentially of boron trifluoride and an alcohol promoter to thereby yield a polyalphaolefin product; and providing a concentration in said oligomerization feed mixture of a modifier consisting essentially of carboxylic acid wherein said concentration is sufficient to significantly increase the yield of trimer and tetramer in said polyalphaolefin product as compared to the yield when there is no said concentration of said modifier, wherein said concentration of said modifier is in the range of from about 0.08 mole percent to about 5.0 mole percent base on the said alpha olefin of said oligomerization feed mixture, wherein the oligomerization process is solvent-free.