Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1989-05-26
1991-09-03
Garvin, Patrick P.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502103, 502104, 502112, 502115, 502120, 502126, 502132, 502134, 526129, C08F 4645
Patent
active
RE0336831
ABSTRACT:
A catalyst composition for polymerizing alpha-olefins is prepared by reacting a transition metal compound, e.g., titanium, with trimethylaluminum catalyst activator. In a preferred embodiment, the catalyst is supported on a porous refractory support and is prepared by additionally reacting a magnesium compound or an organomagnesium composition with the support.
Also disclosed is a process for polymerizing alpha-olefins in the presence of the catalyst of the invention. The polymer products have higher bulk density and produce films of greater strength than polymers prepared with similar catalysts utilizing different alkyl-aluminum activators, e.g., triethylaluminum and triisobutylaluminum.
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Allen et al., U.S. patent application Ser. No. 037,680, filed 04/13/87.
Allen Louanne M.
Hagerty Robert O.
Mohring Richard O.
Garvin Patrick P.
McKillop A. J.
Mobil Oil Corporation
Schneller M. V.
Speciale C. J.
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