Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1997-02-11
1997-12-02
Caldarola, Glenn A.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502104, 502116, 502114, 502128, 526129, B01J 3100, B01J 3700, C08F 402, C08F 460
Patent
active
056935838
ABSTRACT:
A catalyst composition for copolymerizing ethylene and alpha-olefins is prepared by treating a silica carrier, in a non-polar hydrocarbon solvent, with a dialkyl magnesium compound, a halogen-containing compound and titanium tetrachloride, to form a catalyst precursor and activating the precursor with dimethylaluminum chloride.
Also disclosed is a process for copolymerizing ethylene and alpha-olefins in the presence of the catalyst of the invention. The polymer products have multimodal molecular weight distributions unlike unimodal molecular weight distributions of polymers prepared with similar catalyst precursors but activated with different alkylaluminum activators, e.g., triethylaluminum or trimethylaluminum.
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Hagerty Robert O.
Husby Per K.
Kissin Yury V.
Mink Robert I.
Nowlin Thomas E.
Caldarola Glenn A.
Mobil Oil Corporation
Pasterczyk J.
Santini Dennis P.
Schneller Marina V.
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