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(Polyfluoroaryl) fluoroanions of aluminum, gallium, and indium of enhanced utility, uses thereof, and products based thereon

Patent ·
OSTI ID:873674
;

The (polyfluoroaryl)fluoroanions of aluminum, gallium, and indium are novel weakly coordinating anions which are highly fluorinated. (Polyfluoroaryl)fluoroanions of one such type contain at least one ring substituent other than fluorine. These (polyfluoroaryl)fluoroanions of aluminum, gallium, and indium have greater solubility in organic solvents, or have a coordinative ability essentially equal to or less than that of the corresponding (polyfluoroaryl)fluoroanion of aluminum, gallium, or indium in which the substituent is replaced by fluorine. Another type of new (polyfluoroaryl)fluoroanion of aluminum, gallium, and indium have 1-3 perfluorinated fused ring groups and 2-0 perfluorophenyl groups. When used as a cocatalyst in the formation of novel catalytic complexes with d- or f-block metal compounds having at least one leaving group such as a methyl group, these anions, because of their weak coordination to the metal center, do not interfere in the ethylene polymerization process, while affecting the propylene process favorably, if highly isotactic polypropylene is desired. Thus, the (polyfluoroaryl)fluoroanions of aluminum, gallium, and indium of this invention are useful in various polymerization processes such as are described.

Research Organization:
Northwestern University, Evanston, IL (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FG02-86ER13511
Assignee:
Northwestern University (Evanston, IL)
Patent Number(s):
6,218,332
Application Number:
09/634,144
OSTI ID:
873674
Country of Publication:
United States
Language:
English

References (10)

Sterically Encumbered (Perfluoroaryl) Borane and Aluminate Cocatalysts for Tuning Cation−Anion Ion Pair Structure and Reactivity in Metallocene Polymerization Processes. A Synthetic, Structural, and Polymerization Study journal July 1998
Very Large Counteranion Modulation of Cationic Metallocene Polymerization Activity and Stereoregulation by a Sterically Congested (Perfluoroaryl)fluoroaluminate journal March 1997
“Constrained Geometry” Dialkyl Catalysts. Efficient Syntheses, C−H Bond Activation Chemistry, Monomer−Dimer Equilibration, and α-Olefin Polymerization Catalysis journal August 1997
Perfluorophenyl derivatives of the elements journal December 1964
How coordinating are non-coordinating anions? journal January 1995
Organo-Lewis Acids As Cocatalysts in Cationic Metallocene Polymerization Catalysis. Unusual Characteristics of Sterically Encumbered Tris(perfluorobiphenyl)borane journal January 1996
Surface-bound metal hydrocarbyls. Organometallic connections between heterogeneous and homogeneous catalysis journal February 1992
Cationic Zirconocene Olefin Polymerization Catalysts Based on the Organo-Lewis Acid Tris(pentafluorophenyl)borane. A Synthetic,Structural, Solution Dynamic, and Polymerization Catalytic Study journal November 1994
Polyfluoroaryl organometallic compounds. Part IV. Fluorocarbon derivatives of tricovalent aluminium journal January 1967
Reactive cationic dicyclopentadienyl zirconium(IV) complexes journal April 1986

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