Catalyst for the polymerization of ethylene, its preparation and

Details Catalyst for the polymerization of ethylene, its preparation and Catalyst for the polymerization of ethylene, its preparation and

1989-05-03

1990-11-13

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...

502111, 502112, 502120, 502125, 526125, C08F 4649, C08F 4656

Patent

active

049701843

ABSTRACT:
A catalyst for the copolymerization of ethylene by the gas-phase fluidized-bed method is prepared by a process in which a titanium-containing and magnesium-containing active component, reacted with an alcohol as a complexing agent, is applied to a finely divided silica from homogeneous solution, in the presence of a polysiloxane, by evaporating the solvent, and the resulting homogeneous catalyst intermediate is then preactivated by treatment with the alkylaluminum compound and the Lewis base in an inert hydrocarbon solution, and the copolymers prepared using the above catalyst are employed for the production of films exhibiting little blocking.

REFERENCES:
patent: 4405495 (1983-09-01), Lee et al.
patent: 4477587 (1984-10-01), Band

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