Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1994-11-30
1996-08-20
Beck, Shrive
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502103, 502118, 502120, 502121, 502122, 502123, 502125, 502126, B01J 3114
Patent
active
055476759
ABSTRACT:
This invention comprises a catalyst system and a process using such catalyst system for the production of high molecular weight polyolefins, particularly polyethylene and higher poly-.alpha.-olefin, and copolymers of ethylene and/or .alpha.-olefins with other unsaturated monomers, including diolefins, acetylenically unsaturated monomers and cyclic olefins. The catalyst system comprises three components, a monocyclopentadienyl Group IV B transition metal compound, an alumoxane, and a modifier. The catalyst system is highly active, at low ratios of aluminum to the Group IV B transition metal, hence catalyzes the production of a polyolefin product containing low levels of catalyst metal residue.
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Beck Shrive
Exxon Chemical Patents Inc.
Meeks Timothy H.
Smith Charles E.
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