Patent ID: 6524987
Filing Date: 2003-02-25
Classification: C08F,Y10S

Abstract:
A process to produce a catalyst composition, said process comprising:1) contacting at least one organometal compound and at least one organoaluminum compound to produce an organometal/organoaluminum mixture; wherein said organometal compound has the following general formula: (X1)(X2)(X3)(X4)M1 wherein M1 is selected from the group consisting of titanium, zirconium, and hafnium; wherein (X1) and (X2) are cyclopentadienyl derivatives and at least one is fluorenyl or substituted fluorenyl; wherein cyclopentadienyl derivatives are selected from the group consisting of cyclopentadienyls, indenyls, fluorenyls, substituted cyclopentadienyls, substituted indenyls, and substituted fluorenyls; wherein substituents on said substituted cyclopentadienyls, substituted indenyls, and substituted fluorenyls of (X1) and (X2) are selected from the group consisting of aliphatic groups, cyclic groups, combinations of aliphatic and cyclic groups, silyl groups, alkyl halide groups, halides, organometallic groups, phosphorus groups, nitrogen groups, boron groups, germanium groups, and hydrogen; wherein (X1) and (X2) are connected by a bridge having one or two atoms between (X1) and (X2); and further wherein said one or two atoms in said bridge can contain substitutents; wherein (X3) and (X4) are independently selected from the group consisting of halides, aliphatic groups, substituted aliphatic groups, cyclic groups, substituted cyclic groups, combinations of aliphatic groups and cyclic groups, combinations of substituted aliphatic groups and cyclic groups, combinations of aliphatic groups and substituted cyclic groups, combinations of substituted aliphatic groups and substituted cyclic groups, amido groups, substituted amido groups, phosphido groups, substituted phosphido groups, alkyloxide groups, substituted alkyloxide groups, aryloxide groups, substituted aryloxide groups, organometallic groups, and substituted organometallic groups; wherein said first organoaluminum compound is selected from the group consisting of triethyl aluminum, tripropyl aluminum and tri-n-butyl aluminum; 2) contacting said organometal/organoaluminum mixture with a treated solid oxide compound and optionally, a second organoaluminum compound; wherein said second organoaluminum compound has the general formula: Al(X5)n(X6)3âˆ’n wherein (X5) is a hydrocarbyl having from 1 to about 20 carbon atoms; wherein (X6) is a halide, hydride, or alkoxide; and wherein â€œnâ€  is a number from 1 to 3 inclusive; and wherein said treated solid oxide compound is produced by a process comprising: a) contacting at least one solid oxide compound with at least one electron-withdrawing anion source compound; b) optionally, also contacting said solid oxide compound with at least one metal salt compound; and c) calcining said solid oxide compound before, during, or after contacting with said electron-withdrawing anion source or metal salt to produce said treated solid oxide compound.