Process for producing crystalline poly--olefins with a monocyclopentadienyl transition metal catalyst system
Patent 5026798 Issued on June 25, 1991. Estimated Expiration Date: 
September 13, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 13, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.InventorAssigneeApplicationNo. 581817 filed on 09/13/1990US Classes:526/127, Contains non-transition free metal, hydride thereof, or carbon to non-transition metal atom bond502/103, Component A metal is Group IA, IIA or IIIA and component B metal is Group IVB to VIIB or VIII (i.e., alkali metal, alkaline earth Metal, Be, Mg, Al, Ga, In or Tl and Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Tc, Re, iron Group or Platinum group) (e.g., Ziegler Catalyst, etc.)502/117, Component B metal is other than titanium or vanadium526/132, Contains non-transition elemental metal, hydride thereof, or carbon to non transition metal atom bond526/150, At least one atom of Ge, Sn, or Pb in elemental form or bonded to hydrogen or carbon atom526/160, Transition metal bonded to carbon atom526/943POLYMERIZATION WITH METALLOCENE CATALYSTSExaminersPrimary: Garvin, Patrick P.Attorney, Agent or FirmForeign Patent References
International ClassC08F 004/642AbstractThe invention is a catalytic process using a Group IV B transition metal component and an alumoxane component to polymerize -olefins to produce high crystallinity and high molecular weight poly--olefins.Field of SearchContains non-transition free metal, hydride thereof, or carbon to non-transition metal atom bondContains non-transition elemental metal, hydride thereof, or carbon to non transition metal atom bond At least one atom of Ge, Sn, or Pb in elemental form or bonded to hydrogen or carbon atom Transition metal bonded to carbon atom |
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