Organometal catalyst compositions
AssigneeChevron Phillips Chemical Company LP
InventorsMax P. McDaniel, Kathy S. Collins, Elizabeth A. Benham, Anthony P. Eaton, Michael D. Jensen, Joel L. Martin, Gil R. Hawley
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Abstract
This invention provides compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said composition comprises a post-contacted organometal compound, a post-contacted organoaluminum compound, and a post-contacted treated solid oxide compound.
Claims19
A process to produce a catalyst composition, said process comprising contacting an organometal compound, an organoaluminum compound, and a treated solid oxide compound to produce said catalyst composition,
- 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) is independently 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) 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, silicon, phosphorus, boron, germanium, and hydrogen;
- wherein at least one substituent on (X1) can be a bridging group which connects (X1) and (X2);
- 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 (X2) is selected from the group consisting of cyclopentadienyls, indenyls, fluorenyls, substituted cyclopentadienyls, substituted indenyls, substituted fluorenyls, 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 substituents on (X2) are selected from the group consisting of aliphatic groups, cyclic groups, combinations of aliphatic groups and cyclic groups, silyl groups, alkyl halide groups, halides, organometallic groups, phosphorus groups, nitrogen groups, silicon, phosphorus, boron, germanium, and hydrogen;
- wherein at least one substituent on (X2) can be a bridging group which connects (X1) and (X2);
- wherein said organoaluminum compound has the following general formula:
- Al(X5)n(X6)3−n
- wherein (X5) is a hydrocarbyl having from 1 to about 20 carbon atoms;
- wherein (X6) is a halide, hydride, or alkoxide;
- and
- wherein “n” is a number from 1 to 3 inclusive;
- wherein said treated solid oxide compound comprises fluorine, boron, and a solid oxide compound;
- wherein said solid oxide compound comprises silica, and there is a substantial absence of titanium and zirconium.
A process to produce a catalyst composition comprising:
- 1) contacting silica with an aqueous solution containing ammonium fluoroborate or fluoroboric acid to produce a fluorided, boron-containing solid oxide compound having from 1 to 3 millimoles of boron per gram of fluorided, boron-containing solid oxide compound before calcining and having from 4 to 25% by weight fluorine based on the weight of said fluorided, boron-containing solid oxide compound before calcining;
- 2) calcining said fluorided, boron-containing solid oxide compound at a temperature within a range of 250 to 500° C. for 3 to 20 hours to produce a calcined composition;
- 3) combining said calcined composition and bis(n-butylcyclopentadienyl) zirconium dichloride at a temperature within a range of 15° C. to 50° C. for 1 minute to 1 hour to produce a mixture;
- and
- 4) combining said mixture and triethylaluminum to produce said catalyst composition.
A catalyst composition comprising a post-contacted organometal compound, a post-contacted organoaluminum compound, and a post-contacted treated solid oxide compound comprising boron, fluorine, and a solid oxide compound.
Dependencies are inferred from the claim text.