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

Patent ·
OSTI ID:873862
;

The (polyfluoroaryl)fluoroanions of aluminum, gallium, and indium are novel weakly coordinating anions which are 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 interefere in the ethylene polymerization process, while affecting the 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 Univ., Evanston, IL (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FG02-86ER13511
Assignee:
Northwestern University (Evanston, IL)
Patent Number(s):
6,262,200
Application Number:
09/329,764
OSTI ID:
873862
Resource Relation:
Patent File Date: 1999 Jun 10
Country of Publication:
United States
Language:
English

References (9)

Perfluorophenyl derivatives of the elements journal December 1964
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
Reactive cationic dicyclopentadienyl zirconium(IV) complexes journal April 1986
Very Large Counteranion Modulation of Cationic Metallocene Polymerization Activity and Stereoregulation by a Sterically Congested (Perfluoroaryl)fluoroaluminate journal March 1997
Surface-bound metal hydrocarbyls. Organometallic connections between heterogeneous and homogeneous catalysis journal February 1992
How coordinating are non-coordinating anions? journal January 1995
“Constrained Geometry” Dialkyl Catalysts. Efficient Syntheses, C−H Bond Activation Chemistry, Monomer−Dimer Equilibration, and α-Olefin Polymerization Catalysis journal August 1997
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
Organo-Lewis Acids As Cocatalysts in Cationic Metallocene Polymerization Catalysis. Unusual Characteristics of Sterically Encumbered Tris(perfluorobiphenyl)borane journal January 1996

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Related Subjects

polyfluoroaryl
fluoroanions
aluminum
gallium
indium
enhanced
utility
products
based
thereon
novel
weakly
coordinating
anions
highly
fluorinated
type
contain
substituent
fluorine
solubility
organic
solvents
coordinative
ability
essentially
equal
corresponding
fluoroanion
replaced
1-3
perfluorinated
fused
2-0
perfluorophenyl
cocatalyst
formation
catalytic
complexes
d-
f-block
metal
compounds
leaving
methyl
weak
coordination
center
interefere
ethylene
polymerization
process
affecting
propylene
favorably
isotactic
polypropylene
desired
useful
various
processes
described
based thereon
essentially equal
organic solvents
metal compound
metal compounds
organic solvent
metal center
type contain
various polymerization
products based
novel catalytic
perfluorinated fused
catalytic complexes
weakly coordinating
polymerization processes
novel weakly
enhanced utility
f-block metal
highly fluorinated
various poly
polymerization process
coordinating anion
coordinating anions
/526/502/999/