Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1993-03-12
1995-06-27
Pal, Asok
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502117, 502152, 502155, 502159, 526131, 526160, 526163, B01J 3100
Patent
active
054279917
ABSTRACT:
Ionically activated metallocene catalyst compositions which are useful in the polymerization of olefins comprise transition metal cationic components associated with and stabilized by a polyanionic moleties constituted of non-coordinating anionic groups chemically bonded to core components. The transition metal cationic components typically are cyclopentadienyl-group containing Group 4, 5, and 6 metal compounds having a hydrolyzable ligand such that they react with the activator compounds so as to form the cationic components in non-coordinating association with bulky, labile anions derived from the activator compound which in turn is chemically bound to the core component, such as a polymeric or metal oxide support.
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patent: 5055438 (1991-10-01), Canich
patent: 5057475 (1991-10-01), Canich et al.
patent: 5096867 (1992-03-01), Canich
patent: 5120867 (1992-06-01), Welborn, Jr.
Exxon Chemical Patents Inc.
Muller W. G.
Pal Asok
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