Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1994-03-10
1996-03-26
Cross, E. Rollins
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502117, 502154, B01J 3114
Patent
active
055020178
ABSTRACT:
An ionic metallocene catalyst for olefin polymerization which comprises: (1) a cyclopentadienyl-type ligand, a Group IVB transition metal, and alkyl, aryl, or hydride substituents, as a cation, and (2) a weakly coordinating anion comprising boron substituted with halogenated, such as tetra fluoro, aryl substituents preferably containing silylalkyl substitution, such as para-silyl t-butyldimethyl.
REFERENCES:
patent: 5153157 (1992-10-01), Hlatky et al.
patent: 5296433 (1992-04-01), Siedle et al.
patent: 5387568 (1995-02-01), Ewen et al.
Ja Li
Marks Tobin J.
Yang Xinmin
Cross E. Rollins
Fennelly Richard P.
Meeks Timothy H.
Morris Louis A.
Northwestern University
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