Patent ID: 6680417
Filing Date: 2004-01-20
Classification: C07C,C08F

Abstract:
A process for the production of a viscous oligomer oil having predetermined properties comprising:(i) polymerizing a feed comprising one or more linear C3 to C20 olefins having at least one hydrogen on the 2-carbon atom, at least two hydrogens on the 3-carbon atom and at least one hydrogen on the 4-carbon (if at least 4 carbon atoms are present in the olefin), in the presence of a solid metallocene catalyst system comprising a bulky ligand transition metal complex component of the stoichiometric Formula 1 and an activator comprising an organoaluminum compound or a hydrocarbylboron compound or a mixture thereof: LmMXnXâ€²pâ€ƒâ€ƒFormula 1 wherein L is the bulky ligand, M is the transition metal, X and Xâ€² may be the same or different and are independently selected from the group consisting of halogen, hydrocarbyl group or hydrocarboxyl group having 1-20 carbon atoms, wherein m is 1-3, n is 0-3, p is 0-3 and the sum of the integers m+n+p corresponds to the transition metal valency, to thereby form the aforesaid a viscous oligomer oil product mixture comprising an essentially terminally unsaturated viscous, essentially 1-olefin-containing poly (1-olefin) or copoly (1-olefin) of molecular weight between about 300 and about 10,000 that exhibits a terminal vinylidene content of more than 50%; wherein the aforesaid solid metallocene catalyst system is formed by a process comprising: (a) combining at a temperature in the range of from about âˆ’40 0Â° C. to about 150Â° C. in a an organic solvent boiling from âˆ’40 to 250Â° C. at atmospheric pressure a soluble metallocene and a soluble activator comprising at least one of an organoaluminum and a hydrocarbylboron to form a soluble metallocene- and activator-containing catalyst system as the combination product; and (b) removing the aforesaid solvent to thereby form the aforesaid catalyst system as a solid; and (ii) oligomerizing at least a pre-selected fraction of the viscous oligomer oil product mixture formed in step (i) in the presence of an acidic oligomerization catalyst to thereby form the aforesaid viscous oligomer oil having predetermined properties, wherein the resulting product mixture comprises less than 35% oligomers that contain two or less monomeric units and at least 60% of oligomers that contain at least three monomeric units.